View Filing Data

Adjustments to reconcile net income (loss) to net cash provided by operating activities

$ (1,433)

$ 3,443

Depreciation, depletion and amortization

2,569

3,036

Impairments

519

Dry hole costs and leasehold impairments

Accretion on discounted liabilities

133

173

Deferred taxes

(320)

(221)

Distributions received greater than equity losses (undistributed equity earnings)

404

362

Gain on dispositions

(554)

(99)

Unrealized (gain) loss on investment in Cenovus Energy

1,140

(373)

Decrease in accounts and notes receivable

(244)

(21)

Working capital adjustments

1,746

461

Increase in inventories

(27)

(77)

Increase in prepaid expenses and other current assets

(149)

Decrease in accounts payable

(754)

(326)

Decrease in taxes and other accruals

(838)

(494)

Net cash provided by operating activities

2,262

5,785

Working capital changes associated with investing activities

(2,525)

(3,366)

(251)

1,313

701

(1,030)

(485)

(35)

126

(2,462)

(2,938)

(214)

(38)

(36)

(726)

(2,002)

(913)

(696)

Net Cash Used in Financing Activities

(28)

(55)

(1,879)

(2,827)

Effect of Exchange Rate Changes on Cash and Cash Equivalents and Restricted Cash

(93)

Net Change in Cash and Cash Equivalents and Restricted Cash Increase (Decrease)

(2,172)

Cash and Cash Equivalents and Restricted Cash at beginning of period

5,362

^[1]

6,151

Cash and Cash Equivalents and Restricted Cash at end of period

$ 3,190

^[2]

$ 6,197

[1]	Restricted cash of $ 90 million and $ 184 million are included in the "Prepaid expenses and other current assets" and "Other assets" lines, respectively, of our Consolidated Balance Sheet as of December 31, 2019. See Notes to Consolidated Financial Statements.
[2]	Restricted cash of $ 88 million and $ 195 million are included in the "Prepaid expenses and other current assets" and "Other assets" lines, respectively, of our Consolidated Balance Sheet as of June 30, 2020.

Basis of Presentation	6 Months Ended
Basis of Presentation	Jun. 30, 2020
Basis of Presentation [Abstract]
Business Description and Basis of Presentation [Text Block]	Note 1—Basis of Presentation The interim-period financial information presented in the financial statements included in this report is unaudited and, in the opinion of management, includes all known accruals and adjustments necessary for a fair presentation of the consolidated financial position of ConocoPhillips and its results of operations and cash flows for such periods. All such adjustments are of a normal and recurring nature unless otherwise disclosed. Certain notes and other information have been condensed or omitted from the interim financial statements included in this report. Therefore, these financial statements should be read in conjunction with the consolidated financial statements and notes included in our 2019 Annual Report on Form 10-K. The unrealized (gain) loss on investment in Cenovus Energy included on our consolidated statement of cash flows, previously reflected on the line item “Other” within net cash provided by operating activities, has been reclassified in the comparative period to conform with the current period’s presentation.

Change in Accounting Principles	6 Months Ended
Change in Accounting Principles	Jun. 30, 2020
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Significant Accounting Policies [Text Block]	Note 2—Changes in Accounting Principles We adopted the provisions of FASB ASU No. 2016-13, “Measurement of Credit Losses on Financial Instruments,” (ASC Topic 326) and its amendments, beginning January 1, 2020 . This ASU, as amended, sets forth the current expected credit loss model, a new forward-looking impairment model for certain financial instruments measured at amortized cost basis based on expected losses rather than incurred losses. This ASU, as amended, which primarily applies to our accounts receivable, also requires credit losses related to available- for-sale debt securities to be recorded through an allowance for credit losses. The adoption of this ASU did not have a material impact to our financial statements. The majority of our receivables are due within 30 days or less. We monitor the credit quality of our counterparties through review of collections, credit ratings, and other analyses. We develop our estimated allowance for credit losses primarily using an aging method and analyses of historical loss rates as well as consideration of current and future conditions that could impact our counterparties’ credit quality and liquidity.

Inventories	6 Months Ended
Inventories	Jun. 30, 2020
Inventories [Abstract]
Inventories	Note 3—Inventories Inventories consisted of the following: Millions of Dollars June 30 December 31 2020 2019 Crude oil and natural gas $ 452 472 Materials and supplies 530 554 $ 982 1,026 Inventories valued on the LIFO basis totaled $ 352 million and $ 286 million at June 30, 2020 and December 31, 2019, respectively. Due to a precipitous decline in commodity prices beginning in March this year, we recorded a lower of cost or market adjustment in the first quarter of 2020 of $ 228 million to our crude oil and natural gas inventories. The adjustment was included in the “Purchased commodities” line on our consolidated income statement. Commodity prices have since improved in the second quarter.

Asset Acquisitions and Dispositions	6 Months Ended
Asset Acquisitions and Dispositions	Jun. 30, 2020
Asset Acquisitions and Dispositions [Abstract]
Asset Acquisitions and Dispositions [Text Block]	Note 4—Asset Acquisitions and Dispositions Assets Sold In May 2020, we completed the divestiture of our subsidiaries that held our Australia-West assets and operations, and based on an effective date of January 1, 2019, we received proceeds of $ 765 million with an additional $ 200 million due upon final investment decision of the proposed Barossa development project. In the second quarter of 2020, we recognized a before-tax gain of $ 587 million related to this transaction. At the time of disposition, the net carrying value of the subsidiaries sold was approximately $ 0.2 billion, excluding $ 0.5 billion of cash. The net carrying value consisted primarily of $ 1.3 billion of PP&E and $ 0.1 billion of other current assets offset by $ 0.7 billion of ARO, $ 0.3 billion of deferred tax liabilities, and $ 0.2 billion of other liabilities. The before-tax earnings associated with the subsidiaries sold, excluding the gain on disposition noted above, were $ 265 million and $ 156 million for the six-month periods ended June 30, 2020 and 2019, respectively. Production associated with the disposed assets averaged 35 MBOED in the six-month period of 2020. Results of operations for the subsidiaries sold are reported in our Asia Pacific and Middle East segment. In March 2020, we completed the sale of our Niobrara interests for approximately $ 359 million after customary adjustments and recognized a before-tax loss on disposition of $ 38 million. At the time of disposition, our interest in Niobrara had a net carrying value of $ 397 million, consisting primarily of $ 433 million of PP&E and $ 34 million of ARO. The before-tax earnings associated with our interests in Niobrara, including the loss on disposition, were a loss of $ 24 million and $ 5 million for the six-month periods ended June 30, 2020 and 2019, respectively. In February 2020, we sold our Waddell Ranch interests in the Permian Basin for $ 184 million after customary adjustments. No gain or loss was recognized on the sale. Production from the disposed Niobrara and Waddell Ranch interests in our Lower 48 segment averaged 15 MBOED in 2019. Planned Acquisition In July 2020, we signed a definitive agreement to acquire additional Montney acreage for cash consideration of approximately $ 375 million before customary adjustments, plus the assumption of approximately $ 30 million in financing obligations for associated partially owned infrastructure. This acquisition consists primarily of undeveloped properties and includes 140,000 net acres in the liquids-rich Inga Fireweed asset Montney zone, which is directly adjacent to our existing Montney position. Upon completion of this transaction, we will have a Montney acreage position of 295,000 net acres with a 100 percent working interest. The transaction is subject to regulatory approval, is expected to close in the third quarter of 2020 and will be reported in our Canada segment.

Investments, Loans and Long-Term Receivables	6 Months Ended
Investments, Loans and Long-Term Receivables	Jun. 30, 2020
Investments, Loans and Long-Term Receivables [Abstract]
Investments, Loans and Long-Term Receivables	Note 5—Investments, Loans and Long-Term Receivables APLNG APLNG executed project financing agreements for an $ 8.5 billion project finance facility in 2012. The $ 8.5 billion project finance facility was initially composed of financing agreements executed by APLNG with the Export-Import Bank of the United States for approximately $ 2.9 billion, the Export-Import Bank of China for approximately $ 2.7 billion, and a syndicate of Australian and international commercial banks for approximately $ 2.9 billion. All amounts were drawn from the facility. APLNG made its first principal and interest repayment in March 2017 and is scheduled to make bi-annual payments until March 2029 . APLNG made a voluntary repayment of $ 1.4 billion to the Export-Import Bank of China in September 2018. At the same time, APLNG obtained a United States Private Placement (USPP) bond facility of $ 1.4 billion. APLNG made its first interest payment related to this facility in March 2019, and principal payments are scheduled to commence in September 2023, with bi-annual payments due on the facility until September 2030 . During the first quarter of 2019, APLNG refinanced $ 3.2 billion of existing project finance debt through two transactions. As a result of the first transaction, APLNG obtained a commercial bank facility of $ 2.6 billion. APLNG made its first principal and interest repayment in September 2019 with bi-annual payments due on the facility until March 2028 . Through the second transaction, APLNG obtained a USPP bond facility of $ 0.6 billion. APLNG made its first interest payment in September 2019, and principal payments are scheduled to commence in September 2023, with bi-annual payments due on the facility until September 2030. In conjunction with the $ 3.2 billion debt obtained during the first quarter of 2019 to refinance existing project finance debt, APLNG made voluntary repayments of $ 2.2 billion and $ 1.0 billion to a syndicate of Australian and international commercial banks and the Export-Import Bank of China, respectively. At June 30, 2020, a balance of $ 6.5 billion was outstanding on the facilities. See Note 11—Guarantees, for additional information. At June 30, 2020, the carrying value of our equity method investment in APLNG was $ 6,889 million. The balance is included in the “Investments and long-term receivables” line on our consolidated balance sheet. Loans and Long-Term Receivables As part of our normal ongoing business operations, and consistent with industry practice, we enter into numerous agreements with other parties to pursue business opportunities. Included in such activity are loans made to certain affiliated and non-affiliated companies. At June 30, 2020, significant loans to affiliated companies included $ 272 million in project financing to Qatar Liquefied Gas Company Limited (3). On our consolidated balance sheet, the long-term portion of these loans is included in the “Loans and advances—related parties” line, while the short-term portion is in the “Accounts and notes receivable—related parties” line.

Investment in Cenovus Energy	6 Months Ended
Investment in Cenovus Energy	Jun. 30, 2020
Investment In Cenovus Energy [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	Note 6—Investment in Cenovus Energy On May 17, 2017, we completed the sale of our 50 percent nonoperated interest in the FCCL Partnership, as well as the majority of our western Canada gas assets, to Cenovus Energy. Consideration for the transaction included 208 million Cenovus Energy common shares, which, at closing, approximated 16.9 percent of issued and outstanding Cenovus Energy common stock. The fair value and cost basis of our investment in 208 million Cenovus Energy common shares was $ 1.96 billion based on a price of $ 9.41 per share on the NYSE on the closing date. At June 30, 2020, the investment included on our consolidated balance sheet was $ 971 million and is carried at fair value. The fair value of the 208 million Cenovus Energy common shares reflects the closing price of $ 4.67 per share on the NYSE on the last trading day of the quarter, a decrease of $ 1.14 billion from its fair value of $ 2.11 billion at year-end 2019. For the three- and six-month periods ended June 30, 2020, we recorded an unrealized gain of $ 551 million and an unrealized loss of $ 1.14 billion, respectively. For the three- and six-month periods ended June 30, 2019, we recorded an unrealized gain of $ 30 million and $ 373 million, respectively. The unrealized gains and losses are recorded within the “Other income (loss)” line of our consolidated income statement and are related to the shares held at the reporting date. See Note 14—Fair Value Measurement, for additional information. Subject to market conditions, we intend to decrease our investment over time through market transactions, private agreements or otherwise.

Suspended Wells	6 Months Ended
Suspended Wells	Jun. 30, 2020
Suspended Wells [Abstract]
Suspended Wells	Note 7—Suspended Wells The capitalized cost of suspended wells at June 30, 2020, was $ 701 million, a decrease of $ 319 million from year-end 2019 primarily related to our Australia-West divestiture. See Note 4—Asset Acquisitions and Dispositions, for additional information. Of the well costs capitalized for more than one year as of December 31, 2019, $ 19 million was charged to dry hole expense during the first six months of 2020 for one suspended well in the Kamunsu East Field offshore Malaysia.

Impairments	6 Months Ended
Impairments	Jun. 30, 2020
Impairments [Abstract]
Impairments	Note 8—Impairments During the three- and six-month periods ended June 30, 2020 and 2019, we recognized before-tax impairment charges within the following segments: Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Lower 48 2 - 513 - Europe and North Africa (4) 1 6 2 $ (2) 1 519 2 We perform impairment reviews when triggering events arise that may impact the fair value of our assets or investments. We observed volatility in commodity prices during the first six-months of 2020. A decline in commodity prices beginning in March prompted us to evaluate the recoverability of the carrying value of our assets and whether an other than temporary impairment occurred for investments in our portfolio. For certain non-core natural gas assets in the Lower 48, a significant decrease in the outlook for current and long-term natural gas prices resulted in a decline in the estimated fair values to amounts below carrying value. Accordingly, in the first quarter of 2020, we recorded impairments of $ 511 million related to these non-core natural gas assets, primarily for the Wind River Basin operations area consisting of developed properties in the Madden Field and the Lost Cabin Gas Plant, which were written down to fair value. See Note 14—Fair Value Measurement, for additional information. A sustained decline in the current and long-term outlook on commodity prices could trigger additional impairment reviews and possibly result in future impairment charges. We recorded a before-tax impairment in the first quarter of 2020 of $ 31 million in our Asia Pacific and Middle East segment related to the associated carrying value of capitalized undeveloped leasehold costs for the Kamunsu East Field in Malaysia that is no longer in our development plans. This charge is included in the “Exploration expenses” line on our consolidated income statement and is not reflected in the table above.

Debt	6 Months Ended
Debt	Jun. 30, 2020
Debt [Abstract]
Debt	Note 9—Debt Our debt balance as of June 30, 2020 was $ 14,998 million compared with $ 14,895 million at December 31, 2019. Our revolving credit facility provides a total commitment of $ 6.0 billion and expires in May 2023 . Our revolving credit facility may be used for direct bank borrowings, the issuance of letters of credit totaling up to $ 500 million, or as support for our commercial paper program. Our commercial paper program consists of the ConocoPhillips Company $ 6.0 billion program, primarily a funding source for short-term working capital needs. Commercial paper maturities are generally limited to 90 days . We had no commercial paper outstanding at June 30, 2020 or December 31, 2019. We had no direct outstanding borrowings or letters of credit under the revolving credit facility at June 30, 2020 or December 31, 2019. Since we had no commercial paper outstanding and had issued no letters of credit, we had access to $ 6.0 billion in borrowing capacity under our revolving credit facility at June 30, 2020. In March 2020, S&P affirmed its “A” rating on our senior long-term debt and revised its outlook to “negative” from “stable”. In April 2020, Moody’s affirmed their rating of “A3” with a “stable” outlook. Our current rating from Fitch is “A” with a “stable” outlook. At June 30, 2020, we had $ 283 million of certain variable rate demand bonds (VRDBs) outstanding with maturities ranging through 2035. The VRDBs are redeemable at the option of the bondholders on any business day. If they are ever redeemed, we have the ability and intent to refinance on a long-term basis, therefore, the VRDBs are included in the “Long-term debt” line on our consolidated balance sheet.

Changes in Equity	6 Months Ended
Changes in Equity	Jun. 30, 2020
Stockholders' Equity Note [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	Note 10—Changes in Equity Millions of Dollars Attributable to ConocoPhillips Common Stock Par Value Capital in Excess of Par Treasury Stock Accum. Other Comprehensive Loss Retained Earnings Non- Controlling Interests Total For the three months ended June 30, 2020 Balances at March 31, 2020 $ 18 47,027 (47,130) (6,145) 37,545 72 31,387 Net income 260 18 278 Other comprehensive income 320 320 Dividends paid ($ 0.42 per common share) (455) (455) Distributions to noncontrolling interests and other (6) (6) Disposition (84) (84) Distributed under benefit plans 52 52 Other 1 1 Balances at June 30, 2020 $ 18 47,079 (47,130) (5,825) 37,351 - 31,493 For the six months ended June 30, 2020 Balances at December 31, 2019 $ 18 46,983 (46,405) (5,357) 39,742 69 35,050 Net income (loss) (1,479) 46 (1,433) Other comprehensive loss (468) (468) Dividends paid ($ 0.84 per common share) (913) (913) Repurchase of company common stock (726) (726) Distributions to noncontrolling interests and other (32) (32) Disposition (84) (84) Distributed under benefit plans 96 96 Other 1 1 1 3 Balances at June 30, 2020 $ 18 47,079 (47,130) (5,825) 37,351 - 31,493 Millions of Dollars Attributable to ConocoPhillips Common Stock Par Value Capital in Excess of Par Treasury Stock Accum. Other Comprehensive Loss Retained Earnings Non- Controlling Interests Total For the three months ended June 30, 2019 Balances at March 31, 2019 $ 18 46,877 (43,656) (5,914) 35,534 122 32,981 Net income 1,580 17 1,597 Other comprehensive income 87 87 Dividends paid ($ 0.31 per common share) (346) (346) Repurchase of company common stock (1,250) (1,250) Distributions to noncontrolling interests and other (43) (43) Distributed under benefit plans 45 45 Other 1 2 3 Balances at June 30, 2019 $ 18 46,922 (44,906) (5,827) 36,769 98 33,074 For the six months ended June 30, 2019 Balances at December 31, 2018 $ 18 46,879 (42,905) (6,063) 34,010 125 32,064 Net income 3,413 30 3,443 Other comprehensive income 276 276 Dividends paid ($ 0.61 per common share) (696) (696) Repurchase of company common stock (2,002) (2,002) Distributions to noncontrolling interests and other (60) (60) Distributed under benefit plans 43 43 Changes in Accounting Principles* (40) 40 - Other 1 2 3 6 Balances at June 30, 2019 $ 18 46,922 (44,906) (5,827) 36,769 98 33,074 *Cumulative effect of the adoption of ASU No. 2018-02, "Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income."

Guarantees	6 Months Ended
Guarantees	Jun. 30, 2020
Guarantees [Abstract]
Guarantees	Note 11—Guarantees At June 30, 2020, we were liable for certain contingent obligations under various contractual arrangements as described below. We recognize a liability, at inception, for the fair value of our obligation as a guarantor for newly issued or modified guarantees. Unless the carrying amount of the liability is noted below, we have not recognized a liability because the fair value of the obligation is immaterial. In addition, unless otherwise stated, we are not currently performing with any significance under the guarantee and expect future performance to be either immaterial or have only a remote chance of occurrence. APLNG Guarantees At June 30, 2020, we had outstanding multiple guarantees in connection with our 37.5 percent ownership interest in APLNG. The following is a description of the guarantees with values calculated utilizing June 2020 exchange rates: ● During the third quarter of 2016, we issued a guarantee to facilitate the withdrawal of our pro-rata portion of the funds in a project finance reserve account. We estimate the remaining term of this guarantee is 11 years . Our maximum exposure under this guarantee is approximately $ 170 million and may become payable if an enforcement action is commenced by the project finance lenders against APLNG. At June 30, 2020, the carrying value of this guarantee was approximately $ 14 million. ● In conjunction with our original purchase of an ownership interest in APLNG from Origin Energy in October 2008, we agreed to reimburse Origin Energy for our share of the existing contingent liability arising under guarantees of an existing obligation of APLNG to deliver natural gas under several sales agreements with remaining terms of 1 to 22 years . Our maximum potential liability for future payments, or cost of volume delivery, under these guarantees is estimated to be $ 700 million ($ 1.3 billion in the event of intentional or reckless breach), and would become payable if APLNG fails to meet its obligations under these agreements and the obligations cannot otherwise be mitigated. Future payments are considered unlikely, as the payments, or cost of volume delivery, would only be triggered if APLNG does not have enough natural gas to meet these sales commitments and if the co-venturers do not make necessary equity contributions into APLNG. ● We have guaranteed the performance of APLNG with regard to certain other contracts executed in connection with the project’s continued development. The guarantees have remaining terms of 17 to 25 years or the life of the venture . Our maximum potential amount of future payments related to these guarantees is approximately $ 120 million and would become payable if APLNG does not perform. At June 30, 2020, the carrying value of these guarantees was approximately $ 7 million. Other Guarantees We have other guarantees with maximum future potential payment amounts totaling approximately $ 780 million, which consist primarily of guarantees of the residual value of leased office buildings, guarantees of the residual value of corporate aircrafts, and a guarantee for our portion of a joint venture’s project finance reserve accounts. These guarantees have remaining terms of 1 to 5 years and would become payable if certain asset values are lower than guaranteed amounts at the end of the lease or contract term, business conditions decline at guaranteed entities, or as a result of nonperformance of contractual terms by guaranteed parties. At June 30, 2020, the carrying value of these guarantees was approximately $ 11 million. Indemnifications Over the years, we have entered into agreements to sell ownership interests in certain corporations, joint ventures and assets that gave rise to qualifying indemnifications. These agreements include indemnifications for taxes and environmental liabilities. The majority of these indemnifications are related to tax issues and the majority of these expire in 2021. Those related to environmental issues have terms that are generally indefinite and the maximum amounts of future payments are generally unlimited. The carrying amount recorded for these indemnification obligations at June 30, 2020, was approximately $ 70 million. We amortize the indemnification liability over the relevant time period the indemnity is in effect, if one exists, based on the facts and circumstances surrounding each type of indemnity. In cases where the indemnification term is indefinite, we will reverse the liability when we have information the liability is essentially relieved or amortize the liability over an appropriate time period as the fair value of our indemnification exposure declines. Although it is reasonably possible future payments may exceed amounts recorded, due to the nature of the indemnifications, it is not possible to make a reasonable estimate of the maximum potential amount of future payments. Included in the recorded carrying amount at June 30, 2020, were approximately $ 30 million of environmental accruals for known contamination that are included in the “Asset retirement obligations and accrued environmental costs” line on our consolidated balance sheet. For additional information about environmental liabilities, see Note 12—Contingencies and Commitments.

Contingencies and Commitments	6 Months Ended
Contingencies and Commitments	Jun. 30, 2020
Contingencies and Commitments [Abstract]
Contingencies and Commitments	Note 12—Contingencies and Commitments A number of lawsuits involving a variety of claims arising in the ordinary course of business have been filed against ConocoPhillips. We also may be required to remove or mitigate the effects on the environment of the placement, storage, disposal or release of certain chemical, mineral and petroleum substances at various active and inactive sites. We regularly assess the need for accounting recognition or disclosure of these contingencies. In the case of all known contingencies (other than those related to income taxes), we accrue a liability when the loss is probable and the amount is reasonably estimable. If a range of amounts can be reasonably estimated and no amount within the range is a better estimate than any other amount, then the low end of the range is accrued. We do not reduce these liabilities for potential insurance or third-party recoveries. We accrue receivables for insurance or other third-party recoveries when applicable. With respect to income tax-related contingencies, we use a cumulative probability-weighted loss accrual in cases where sustaining a tax position is less than certain. Based on currently available information, we believe it is remote that future costs related to known contingent liability exposures will exceed current accruals by an amount that would have a material adverse impact on our consolidated financial statements. As we learn new facts concerning contingencies, we reassess our position both with respect to accrued liabilities and other potential exposures. Estimates particularly sensitive to future changes include contingent liabilities recorded for environmental remediation, tax and legal matters. Estimated future environmental remediation costs are subject to change due to such factors as the uncertain magnitude of cleanup costs, the unknown time and extent of such remedial actions that may be required, and the determination of our liability in proportion to that of other responsible parties. Estimated future costs related to tax and legal matters are subject to change as events evolve and as additional information becomes available during the administrative and litigation processes. Environmental We are subject to international, federal, state and local environmental laws and regulations. When we prepare our consolidated financial statements, we record accruals for environmental liabilities based on management’s best estimates, using all information that is available at the time. We measure estimates and base liabilities on currently available facts, existing technology, and presently enacted laws and regulations, taking into account stakeholder and business considerations. When measuring environmental liabilities, we also consider our prior experience in remediation of contaminated sites, other companies’ cleanup experience, and data released by the U.S. EPA or other organizations. We consider unasserted claims in our determination of environmental liabilities, and we accrue them in the period they are both probable and reasonably estimable. Although liability of those potentially responsible for environmental remediation costs is generally joint and several for federal sites and frequently so for other sites, we are usually only one of many companies cited at a particular site. Due to the joint and several liabilities, we could be responsible for all cleanup costs related to any site at which we have been designated as a potentially responsible party. We have been successful to date in sharing cleanup costs with other financially sound companies. Many of the sites at which we are potentially responsible are still under investigation by the EPA or the agency concerned. Prior to actual cleanup, those potentially responsible normally assess the site conditions, apportion responsibility and determine the appropriate remediation. In some instances, we may have no liability or may attain a settlement of liability. Where it appears that other potentially responsible parties may be financially unable to bear their proportional share, we consider this inability in estimating our potential liability, and we adjust our accruals accordingly. As a result of various acquisitions in the past, we assumed certain environmental obligations. Some of these environmental obligations are mitigated by indemnifications made by others for our benefit, and some of the indemnifications are subject to dollar limits and time limits. We are currently participating in environmental assessments and cleanups at numerous federal Superfund and comparable state and international sites. After an assessment of environmental exposures for cleanup and other costs, we make accruals on an undiscounted basis (except those acquired in a purchase business combination, which we record on a discounted basis) for planned investigation and remediation activities for sites where it is probable future costs will be incurred and these costs can be reasonably estimated. We have not reduced these accruals for possible insurance recoveries. At June 30, 2020 and December 31, 2019, our balance sheet included a total environmental accrual of $ 171 million for remediation activities in the U.S. and Canada. We expect to incur a substantial amount of these expenditures within the next 30 years . In the future, we may be involved in additional environmental assessments, cleanups and proceedings. Legal Proceedings We are subject to various lawsuits and claims including but not limited to matters involving oil and gas royalty and severance tax payments, gas measurement and valuation methods, contract disputes, environmental damages, climate change, personal injury, and property damage. Our primary exposures for such matters relate to alleged royalty and tax underpayments on certain federal, state and privately owned properties and claims of alleged environmental contamination from historic operations. We will continue to defend ourselves vigorously in these matters. Our legal organization applies its knowledge, experience and professional judgment to the specific characteristics of our cases, employing a litigation management process to manage and monitor the legal proceedings against us. Our process facilitates the early evaluation and quantification of potential exposures in individual cases. This process also enables us to track those cases that have been scheduled for trial and/or mediation. Based on professional judgment and experience in using these litigation management tools and available information about current developments in all our cases, our legal organization regularly assesses the adequacy of current accruals and determines if adjustment of existing accruals, or establishment of new accruals, is required. Other Contingencies We have contingent liabilities resulting from throughput agreements with pipeline and processing companies not associated with financing arrangements. Under these agreements, we may be required to provide any such company with additional funds through advances and penalties for fees related to throughput capacity not utilized. In addition, at June 30, 2020, we had performance obligations secured by letters of credit of $ 196 million (issued as direct bank letters of credit) related to various purchase commitments for materials, supplies, commercial activities and services incident to the ordinary conduct of business. In 2007, ConocoPhillips was unable to reach agreement with respect to the empresa mixta structure mandated by the Venezuelan government’s Nationalization Decree. As a result, Venezuela’s national oil company, Petróleos de Venezuela, S.A. (PDVSA), or its affiliates, directly assumed control over ConocoPhillips’ interests in the Petrozuata and Hamaca heavy oil ventures and the offshore Corocoro development project. In response to this expropriation, ConocoPhillips initiated international arbitration on November 2, 2007, with the ICSID. On September 3, 2013, an ICSID arbitration tribunal held that Venezuela unlawfully expropriated ConocoPhillips’ significant oil investments in June 2007. On January 17, 2017, the Tribunal reconfirmed the decision that the expropriation was unlawful. In March 2019, the Tribunal unanimously ordered the government of Venezuela to pay ConocoPhillips approximately $ 8.7 billion in compensation for the government’s unlawful expropriation of the company’s investments in Venezuela in 2007. ConocoPhillips has filed a request for recognition of the award in several jurisdictions. On August 29, 2019, the ICSID Tribunal issued a decision rectifying the award and reducing it by approximately $ 227 million. The award now stands at $ 8.5 billion plus interest. The government of Venezuela sought annulment of the award, which automatically stayed enforcement of the award. Annulment proceedings are underway. In 2014, ConocoPhillips filed a separate and independent arbitration under the rules of the ICC against PDVSA under the contracts that had established the Petrozuata and Hamaca projects. The ICC Tribunal issued an award in April 2018, finding that PDVSA owed ConocoPhillips approximately $ 2 billion under their agreements in connection with the expropriation of the projects and other pre-expropriation fiscal measures. In August 2018, ConocoPhillips entered into a settlement with PDVSA to recover the full amount of this ICC award, plus interest through the payment period, including initial payments totaling approximately $500 million within a period of 90 days from the time of signing of the settlement agreement. The balance of the settlement is to be paid quarterly over a period of four and a half years. To date, ConocoPhillips has received approximately $ 754 million. Per the settlement, PDVSA recognized the ICC award as a judgment in various jurisdictions, and ConocoPhillips agreed to suspend its legal enforcement actions. ConocoPhillips sent notices of default to PDVSA on October 14 and November 12, 2019, and to date PDVSA failed to cure its breach. As a result, ConocoPhillips has resumed legal enforcement actions. ConocoPhillips has ensured that the settlement and any actions taken in enforcement thereof meet all appropriate U.S. regulatory requirements, including those related to any applicable sanctions imposed by the U.S. against Venezuela. In 2016, ConocoPhillips filed a separate and independent arbitration under the rules of the ICC against PDVSA under the contracts that had established the Corocoro project. On August 2, 2019, the ICC Tribunal awarded ConocoPhillips approximately $ 55 million under the Corocoro contracts. ConocoPhillips is seeking recognition and enforcement of the award in various jurisdictions. ConocoPhillips has ensured that all the actions related to the award meet all appropriate U.S. regulatory requirements, including those related to any applicable sanctions imposed by the U.S. against Venezuela. The Office of Natural Resources Revenue (ONRR) has conducted audits of ConocoPhillips’ payment of royalties on federal lands and has issued multiple orders to pay additional royalties to the federal government. ConocoPhillips has appealed these orders and strongly objects to the ONRR claims. The appeals are pending with the Interior Board of Land Appeals, except for one order that is the subject of a lawsuit ConocoPhillips filed in 2016 in New Mexico federal court after its appeal was denied by the Interior Board of Land Appeals. Beginning in 2017, cities, counties, and state governments in California, New York, Washington, Rhode Island, Maryland and Hawaii, as well as the Pacific Coast Federation of Fishermen’s Association, Inc., have filed lawsuits against oil and gas companies, including ConocoPhillips, seeking compensatory damages and equitable relief to abate alleged climate change impacts. ConocoPhillips is vigorously defending against these lawsuits. The lawsuits brought by the Cities of San Francisco, Oakland and New York were dismissed by federal district courts. The New York dismissal remains on appeal. The Ninth Circuit ruled that the San Francisco and Oakland cases (and other California cases) should proceed in state court, with that decision subject to appeal. Lawsuits filed by the cities and counties in California, Washington, and Hawaii are currently stayed pending resolution of the Ninth Circuit appeals. Lawsuits filed in Maryland and Rhode Island are proceeding in state court while rulings in those matters, on the issue of whether the matters should proceed in state or federal court, are on appeal. Several Louisiana parishes have filed lawsuits against oil and gas companies, including ConocoPhillips, seeking compensatory damages in connection with historical oil and gas operations in Louisiana. The lawsuits are stayed pending an appeal with the Fifth Circuit on the issue of whether they will proceed in federal or state court. ConocoPhillips will vigorously defend against these lawsuits. In 2016, ConocoPhillips, through its subsidiary, The Louisiana Land and Exploration Company LLC, submitted claims as the largest private wetlands owner in Louisiana within the settlement claims administration process related to the oil spill in the Gulf of Mexico in April 2010. In July 2020, the claims administrator issued an award to the company which, after fees and expenses, totaled approximately $ 90 million.

Derivative and Financial Instruments	6 Months Ended
Derivative and Financial Instruments	Jun. 30, 2020
Derivative and Financial Instruments [Abstract]
Derivative and Financial Instruments	Note 13—Derivative and Financial Instruments We use futures, forwards, swaps and options in various markets to meet our customer needs, capture market opportunities and manage foreign exchange currency risk. Commodity Derivative Instruments Our commodity business primarily consists of natural gas, crude oil, bitumen, LNG and NGLs. Commodity derivative instruments are held at fair value on our consolidated balance sheet. Where these balances have the right of setoff, they are presented on a net basis. Related cash flows are recorded as operating activities on our consolidated statement of cash flows. On our consolidated income statement, realized and unrealized gains and losses are recognized either on a gross basis if directly related to our physical business or a net basis if held for trading. Gains and losses related to contracts that meet and are designated with the NPNS exception are recognized upon settlement. We generally apply this exception to eligible crude contracts. We do not elect hedge accounting for our commodity derivatives. The following table presents the gross fair values of our commodity derivatives, excluding collateral, and the line items where they appear on our consolidated balance sheet: Millions of Dollars June 30 December 31 2020 2019 Assets Prepaid expenses and other current assets $ 316 288 Other assets 35 34 Liabilities Other accruals 310 283 Other liabilities and deferred credits 25 28 The gains (losses) from commodity derivatives incurred, and the line items where they appear on our consolidated income statement were: Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Sales and other operating revenues $ (50) 45 (3) 64 Other income (loss) 3 2 5 1 Purchased commodities 24 (31) (2) (51) The table below summarizes our material net exposures resulting from outstanding commodity derivative contracts: Open Position Long/(Short) June 30 December 31 2020 2019 Commodity Natural gas and power (billions of cubic feet equivalent) Fixed price (20) (5) Basis (27) (23) Foreign Currency Exchange Derivatives We have foreign currency exchange rate risk resulting from international operations. Our foreign currency exchange derivative activity primarily relates to managing our cash-related foreign currency exchange rate exposures, such as firm commitments for capital programs or local currency tax payments, dividends and cash returns from net investments in foreign affiliates, and investments in equity securities. Our foreign currency exchange derivative instruments are held at fair value on our consolidated balance sheet. Related cash flows are recorded as operating activities on our consolidated statement of cash flows. We do not elect hedge accounting on our foreign currency exchange derivatives. The following table presents the gross fair values of our foreign currency exchange derivatives, excluding collateral, and the line items where they appear on our consolidated balance sheet: Millions of Dollars June 30 December 31 2020 2019 Assets Prepaid expenses and other current assets $ 23 1 Liabilities Other accruals 1 20 Other liabilities and deferred credits - 8 The (gains) losses from foreign currency exchange derivatives incurred, and the line item where they appear on our consolidated income statement were: Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Foreign currency transaction (gain) loss $ 12 23 (62) 21 We had the following net notional position of outstanding foreign currency exchange derivatives: In Millions Notional Currency June 30 December 31 2020 2019 Foreign Currency Exchange Derivatives Buy GBP, sell EUR GBP 7 4 Sell CAD, buy USD CAD 427 1,337 In the second quarter of 2019, we entered into foreign currency exchange contracts to sell CAD 1.35 billion at CAD 0.748 against the USD. In the first quarter of 2020, we entered into forward currency exchange contracts to buy CAD 0.9 billion at CAD 0.718 against the USD Financial Instruments We invest in financial instruments with maturities based on our cash forecasts for the various accounts and currency pools we manage. The types of financial instruments in which we currently invest include: ● Time deposits: Interest bearing deposits placed with financial institutions for a predetermined amount of time. ● Demand deposits: Interest bearing deposits placed with financial institutions. Deposited funds can be withdrawn without notice. ● Commercial paper: Unsecured promissory notes issued by a corporation, commercial bank or government agency purchased at a discount to mature at par. ● U.S. government or government agency obligations: Securities issued by the U.S. government or U.S. government agencies. ● Corporate bonds: Unsecured debt securities issued by corporations. ● Asset-backed securities: Collateralized debt securities. The following investments are carried on our consolidated balance sheet at cost, plus accrued interest: Millions of Dollars Carrying Amount Cash and Cash Equivalents Short-Term Investments Investments and Long- Term Receivables June 30 December 31 June 30 December 31 June 30 December 31 2020 2019 2020 2019 2020 2019 Cash $ 575 759 Demand Deposits 917 1,483 - - - - Time Deposits Remaining maturities from 1 to 90 days 1,396 2,030 2,339 1,395 - - Remaining maturities from 91 to 180 days - - 1,302 465 - - Remaining maturities within one year - - 14 - - - Remaining maturities greater than one year through five years - - - - 3 - Commercial Paper Remaining maturities from 1 to 90 days - 413 - 1,069 - - Remaining maturities from 91 to 180 days - - 50 - - - U.S. Government Obligations Remaining maturities from 1 to 90 days 15 394 - - - - $ 2,903 5,079 3,705 2,929 3 - The following investments in debt securities classified as available for sale are carried on our consolidated balance sheet at fair value: Millions of Dollars Carrying Amount Cash and Cash Equivalents Short-Term Investments Investments and Long- Term Receivables June 30 2020 December 31 2019 June 30 2020 December 31 2019 June 30 2020 December 31 2019 Corporate Bonds Maturities within one year $ - 1 144 59 - - Maturities greater than one year through five years - - - - 134 99 Commercial Paper Maturities within one year 4 8 126 30 - - U.S. Government Obligations Maturities within one year - - 10 10 - - Maturities greater than one year through five years - - - - 16 15 U.S. Government Agency Obligations Maturities greater than one year through five years - - - - 4 - Asset-backed Securities Maturities greater than one year through five years - - - - 37 19 $ 4 9 280 99 191 133 The following table summarizes the amortized cost basis and fair value of investments in debt securities classified as available for sale: Millions of Dollars June 30, 2020 December 31, 2019 Amortized Cost Basis Fair Value Amortized Cost Basis Fair Value Major Security Type Corporate bonds $ 276 278 159 159 Commercial paper 130 130 38 38 U.S. government obligations 25 26 25 25 U.S. government agency obligations 4 4 - - Asset-backed securities 37 37 19 19 $ 472 475 241 241 As of June 30, 2020 and December 31, 2019, total unrealized losses for debt securities classified as available for sale with net losses were negligible. Additionally, as of June 30, 2020 and December 31, 2019, investments in these debt securities in an unrealized loss position for which an allowance for credit losses has not been recorded were negligible. For the three- and six-month periods ended June 30, 2020, proceeds from sales and redemptions of investments in debt securities classified as available for sale were $ 126 million and $ 189 million, respectively. Gross realized gains and losses included in earnings from those sales and redemptions were negligible. The cost of securities sold and redeemed is determined using the specific identification method. Credit Risk Financial instruments potentially exposed to concentrations of credit risk consist primarily of cash equivalents, short-term investments, long-term investments in debt securities, OTC derivative contracts and trade receivables. Our cash equivalents and short-term investments are placed in high-quality commercial paper, government money market funds, government debt securities, time deposits with major international banks and financial institutions, and high-quality corporate bonds. Our long-term investments in debt securities are placed in high-quality corporate bonds, U.S. government and government agency obligations, asset-backed securities, and time deposits with major international banks and financial institutions. The credit risk from our OTC derivative contracts, such as forwards, swaps and options, derives from the counterparty to the transaction. Individual counterparty exposure is managed within predetermined credit limits and includes the use of cash-call margins when appropriate, thereby reducing the risk of significant nonperformance. We also use futures, swaps and option contracts that have a negligible credit risk because these trades are cleared with an exchange clearinghouse and subject to mandatory margin requirements until settled; however, we are exposed to the credit risk of those exchange brokers for receivables arising from daily margin cash calls, as well as for cash deposited to meet initial margin requirements. Our trade receivables result primarily from our petroleum operations and reflect a broad national and international customer base, which limits our exposure to concentrations of credit risk. The majority of these receivables have payment terms of 30 days or less, and we continually monitor this exposure and the creditworthiness of the counterparties. We do not generally require collateral to limit the exposure to loss; however, we will sometimes use letters of credit, prepayments and master netting arrangements to mitigate credit risk with counterparties that both buy from and sell to us, as these agreements permit the amounts owed by us or owed to others to be offset against amounts due to us. Certain of our derivative instruments contain provisions that require us to post collateral if the derivative exposure exceeds a threshold amount. We have contracts with fixed threshold amounts and other contracts with variable threshold amounts that are contingent on our credit rating. The variable threshold amounts typically decline for lower credit ratings, while both the variable and fixed threshold amounts typically revert to zero if we fall below investment grade. Cash is the primary collateral in all contracts; however, many also permit us to post letters of credit as collateral, such as transactions administered through the New York Mercantile Exchange. The aggregate fair value of all derivative instruments with such credit risk-related contingent features that were in a liability position on June 30, 2020 and December 31, 2019, was $ 40 million and $ 79 million, respectively. For these instruments, no collateral was posted as of June 30, 2020 or December 31, 2019. If our credit rating had been downgraded below investment grade on June 30, 2020, we would have been required to post $ 38 million of additional collateral, either with cash or letters of credit.

Fair Value Measurement	6 Months Ended
Fair Value Measurement	Jun. 30, 2020
Fair Value Measurement [Abstract]
Fair Value Measurement	Note 14—Fair Value Measurement We carry a portion of our assets and liabilities at fair value measured at the reporting date using an exit price (i.e., the price that would be received to sell an asset or paid to transfer a liability) and disclosed according to the quality of valuation inputs under the following hierarchy: ● Level 1: Quoted prices (unadjusted) in an active market for identical assets or liabilities. ● Level 2: Inputs other than quoted prices that are directly or indirectly observable. ● Level 3: Unobservable inputs that are significant to the fair value of assets or liabilities. The classification hierarchy of an asset or liability is based on the lowest level of input significant to its fair value. Those that are initially classified as Level 3 are subsequently reported as Level 2 when the fair value derived from unobservable inputs is inconsequential to the overall fair value, or if corroborated market data becomes available. Assets and liabilities initially reported as Level 2 are subsequently reported as Level 3 if corroborated market data is no longer available. There were no material transfers into or out of Level 3 during 2020 or 2019. Recurring Fair Value Measurement Financial assets and liabilities reported at fair value on a recurring basis primarily include our investment in Cenovus Energy common shares, our investments in debt securities classified as available for sale, and commodity derivatives. ● Level 1 derivative assets and liabilities primarily represent exchange-traded futures and options that are valued using unadjusted prices available from the underlying exchange. Level 1 also includes our investment in common shares of Cenovus Energy, which is valued using quotes for shares on the NYSE, and our investments in U.S. government obligations classified as available for sale debt securities, which are valued using exchange prices. ● Level 2 derivative assets and liabilities primarily represent OTC swaps, options and forward purchase and sale contracts that are valued using adjusted exchange prices, prices provided by brokers or pricing service companies that are all corroborated by market data. Level 2 also includes our investments in debt securities classified as available for sale including investments in corporate bonds, commercial paper, asset-backed securities, and U.S. government agency obligations that are valued using pricing provided by brokers or pricing service companies that are corroborated with market data. ● Level 3 derivative assets and liabilities consist of OTC swaps, options and forward purchase and sale contracts where a significant portion of fair value is calculated from underlying market data that is not readily available. The derived value uses industry standard methodologies that may consider the historical relationships among various commodities, modeled market prices, time value, volatility factors and other relevant economic measures. The use of these inputs results in management’s best estimate of fair value. Level 3 activity was not material for all periods presented. The following table summarizes the fair value hierarchy for gross financial assets and liabilities (i.e., unadjusted where the right of setoff exists for commodity derivatives accounted for at fair value on a recurring basis): Millions of Dollars June 30, 2020 December 31, 2019 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Investment in Cenovus Energy $ 971 - - 971 2,111 - - 2,111 Investments in debt securities 26 449 - 475 25 216 - 241 Commodity derivatives 207 120 24 351 172 114 36 322 Total assets $ 1,204 569 24 1,797 2,308 330 36 2,674 Liabilities Commodity derivatives $ 216 103 16 335 174 115 22 311 Total liabilities $ 216 103 16 335 174 115 22 311 The following table summarizes those commodity derivative balances subject to the right of setoff as presented on our consolidated balance sheet. We have elected to offset the recognized fair value amounts for multiple derivative instruments executed with the same counterparty in our financial statements when a legal right of setoff exists. Millions of Dollars Amounts Subject to Right of Setoff Gross Amounts Not Gross Net Amounts Subject to Gross Amounts Amounts Cash Net Recognized Right of Setoff Amounts Offset Presented Collateral Amounts June 30, 2020 Assets $ 351 1 350 233 117 8 109 Liabilities 335 2 333 233 100 22 78 December 31, 2019 Assets $ 322 3 319 193 126 4 122 Liabilities 311 4 307 193 114 12 102 At June 30, 2020 and December 31, 2019, we did not present any amounts gross on our consolidated balance sheet where we had the right of setoff. Non-Recurring Fair Value Measurement The following table summarizes the fair value hierarchy by major category and date of remeasurement for assets accounted for at fair value on a non-recurring basis: Millions of Dollars Fair Value Measurement Using Fair Value Level 3 Inputs Before-Tax Loss Net PP&E (held for use) March 31, 2020 $ 77 77 510 During the first quarter of 2020 , the estimated fair value of our assets in the Wind River Basin operations area declined to an amount below the carrying value. The Wind River Basin operations area consists of certain developed natural gas properties in the Madden Field and the Lost Cabin Gas Plant and is included in our Lower 48 segment. The carrying value was written down to fair value. The fair value was estimated based on an internal discounted cash flow model using estimates of future production, an outlook of future prices using a combination of exchanges (short-term) and external pricing services companies (long-term), future operating costs and capital expenditures, and a discount rate believed to be consistent with those used by principal market participants. The range and arithmetic average of significant unobservable inputs used in the Level 3 fair value measurement were as follows: Fair Value (Millions of Dollars) Valuation Technique Unobservable Inputs Range (Arithmetic Average) March 31, 2020 Wind River Basin $ 77 Discounted cash flow Natural gas production (MMCFD) 8.4 - 55.2 ( 22.9 ) Natural gas price outlook* ($/MMBTU) $ 2.67 - $ 9.17 ($ 5.68 ) Discount rate** 7.9 % - 9.1 % ( 8.3 %) Henry Hub natural gas price outlook based on external pricing service companies' outlooks for years 2022-2034; future prices escalated at 2.2 % annually after year 2034. *Determined as the weighted average cost of capital of a group of peer companies, adjusted for risks where appropriate. Reported Fair Values of Financial Instruments We used the following methods and assumptions to estimate the fair value of financial instruments: ● Cash and cash equivalents and short-term investments: The carrying amount reported on the balance sheet approximates fair value. For those investments classified as available for sale debt securities, the carrying amount reported on the balance sheet is fair value. ● Accounts and notes receivable (including long-term and related parties): The carrying amount reported on the balance sheet approximates fair value. The valuation technique and methods used to estimate the fair value of the current portion of fixed-rate related party loans is consistent with Loans and advances—related parties. ● Investment in Cenovus Energy: See Note 6—Investment in Cenovus Energy for a discussion of the carrying value and fair value of our investment in Cenovus Energy common shares. ● Investments in debt securities classified as available for sale: The fair value of investments in debt securities categorized as Level 1 in the fair value hierarchy is measured using exchange prices. The fair value of investments in debt securities categorized as Level 2 in the fair value hierarchy is measured using pricing provided by brokers or pricing service companies that are corroborated with market data. See Note 13—Derivatives and Financial Instruments, for additional information. ● Loans and advances—related parties: The carrying amount of floating-rate loans approximates fair value. The fair value of fixed-rate loan activity is measured using market observable data and is categorized as Level 2 in the fair value hierarchy. See Note 5—Investments, Loans and Long-Term Receivables, for additional information. ● Accounts payable (including related parties) and floating-rate debt: The carrying amount of accounts payable and floating-rate debt reported on the balance sheet approximates fair value. ● Fixed-rate debt: The estimated fair value of fixed-rate debt is measured using prices available from a pricing service that is corroborated by market data; therefore, these liabilities are categorized as Level 2 in the fair value hierarchy. The following table summarizes the net fair value of financial instruments (i.e., adjusted where the right of setoff exists for commodity derivatives): Millions of Dollars Carrying Amount Fair Value June 30 December 31 June 30 December 31 2020 2019 2020 2019 Financial assets Investment in Cenovus Energy $ 971 2,111 971 2,111 Commodity derivatives 110 125 110 125 Investments in debt securities 475 241 475 241 Total loans and advances—related parties 272 339 272 339 Financial liabilities Total debt, excluding finance leases 14,156 14,175 18,307 18,108 Commodity derivatives 80 106 80 106

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Accumulated Other Comprehensive Loss	6 Months Ended
Accumulated Other Comprehensive Loss	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Loss	Note 15—Accumulated Other Comprehensive Loss Accumulated other comprehensive loss in the equity section of our consolidated balance sheet included: Millions of Dollars Defined Benefit Plans Net Unrealized Gain on Securities Foreign Currency Translation Accumulated Other Comprehensive Income (Loss) December 31, 2019 $ (350) - (5,007) (5,357) Other comprehensive income (loss) 18 2 (488) (468) June 30, 2020 $ (332) 2 (5,495) (5,825) The following table summarizes reclassifications out of accumulated other comprehensive loss and into net income (loss): Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Defined benefit plans $ 8 17 16 30 The above amounts are included in the computation of net periodic benefit cost and are presented net of tax expense of $ 2 million and $ 5 million for the three-month periods ended June 30, 2020 and June 30, 2019, respectively, and $ 4 million and $ 10 million for the six-month periods ended June 30, 2020 and June 30, 2019, respectively. See Note 17—Employee Benefit Plans, for additional information.

Cash Flow Information	6 Months Ended
Cash Flow Information	Jun. 30, 2020
Cash Flow Information [Abstract]
Cash Flow Information	Note 16—Cash Flow Information Millions of Dollars Six Months Ended June 30 2020 2019 Cash Payments Interest $ 397 414 Income taxes 761 1,572 Net Sales (Purchases) of Investments Short-term investments purchased $ (7,021) (982) Short-term investments sold 6,147 497 Long-term investments purchased (208) - Long-term investments sold 52 - $ (1,030) (485)

Employee Benefit Plans	6 Months Ended
Employee Benefit Plans	Jun. 30, 2020
Employee Benefit Plans [Abstract]
Employee Benefit Plans	Note 17—Employee Benefit Plans Pension and Postretirement Plans Millions of Dollars Pension Benefits Other Benefits 2020 2019 2020 2019 U.S. Int'l. U.S. Int'l. Components of Net Periodic Benefit Cost Three Months Ended March 31, June 30, September 30, December 31 Service cost $ 21 13 19 18 - - Interest cost 17 20 21 26 1 3 Expected return on plan assets (21) (34) (18) (35) - - Amortization of prior service credit - - - (1) (8) (9) Recognized net actuarial loss 13 5 13 8 - - Settlements - - 11 - - - Net periodic benefit cost $ 30 4 46 16 (7) (6) Six Months Ended March 31, June 30, September 30, December 31 Service cost $ 42 27 39 37 1 - Interest cost 34 42 42 52 3 5 Expected return on plan assets (42) (71) (36) (70) - - Amortization of prior service credit - - - (1) (16) (17) Recognized net actuarial loss (gain) 25 11 26 16 - (1) Settlements 1 (1) 17 - - - Net periodic benefit cost $ 60 8 88 34 (12) (13) The components of net periodic benefit cost, other than the service cost component, are included in the “Other expenses” line item on our consolidated income statement. During the first six months of 2020, we contributed $ 49 million to our domestic benefit plans and $ 44 million to our international benefit plans. In 2020, we expect to contribute a total of approximately $ 130 million to our domestic qualified and nonqualified pension and postretirement benefit plans and $ 60 million to our international qualified and nonqualified pension and postretirement benefit plans.

Related Party Transactions	6 Months Ended
Related Party Transactions	Jun. 30, 2020
Related Party Transactions [Abstract]
Related Party Transactions	Note 18—Related Party Transactions Our related parties primarily include equity method investments and certain trusts for the benefit of employees. For disclosures on trusts for the benefit of employees, see Note 17—Employee Benefit Plans. Significant transactions with our equity affiliates were: Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Operating revenues and other income $ 21 26 38 47 Purchases - 17 - 38 Operating expenses and selling, general and administrative expenses 12 14 27 28 Net interest income* (2) (3) (4) (7) *We paid interest to, or received interest from, various affiliates. See Note 5—Investments, Loans and Long-Term Receivables, for additional information on loans to affiliated companies.

Sales and Other Operating Revenues	6 Months Ended
Sales and Other Operating Revenues	Jun. 30, 2020
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	Note 19—Sales and Other Operating Revenues Revenue from Contracts with Customers The following table provides further disaggregation of our consolidated sales and other operating revenues: Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Revenue from contracts with customers $ 1,919 6,633 6,830 13,692 Revenue from contracts outside the scope of ASC Topic 606 Physical contracts meeting the definition of a derivative 856 1,371 2,152 3,452 Financial derivative contracts (26) (51) (75) (41) Consolidated sales and other operating revenues $ 2,749 7,953 8,907 17,103 Revenues from contracts outside the scope of ASC Topic 606 relate primarily to physical gas contracts at market prices which qualify as derivatives accounted for under ASC Topic 815, “Derivatives and Hedging,” and for which we have not elected NPNS. There is no significant difference in contractual terms or the policy for recognition of revenue from these contracts and those within the scope of ASC Topic 606. The following disaggregation of revenues is provided in conjunction with Note 20—Segment Disclosures and Related Information: Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Revenue from Outside the Scope of ASC Topic 606 by Segment Lower 48 $ 698 1,111 1,674 2,724 Canada 121 100 300 341 Europe and North Africa 37 160 178 387 Physical contracts meeting the definition of a derivative $ 856 1,371 2,152 3,452 Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Revenue from Outside the Scope of ASC Topic 606 by Product Crude oil $ 26 165 118 353 Natural gas 763 1,095 1,853 2,863 Other 67 111 181 236 Physical contracts meeting the definition of a derivative $ 856 1,371 2,152 3,452 Practical Expedients Typically, our commodity sales contracts are less than 12 months in duration; however, in certain specific cases may extend longer, which may be out to the end of field life. We have long-term commodity sales contracts which use prevailing market prices at the time of delivery, and under these contracts, the market- based variable consideration for each performance obligation (i.e., delivery of commodity) is allocated to each wholly unsatisfied performance obligation within the contract. Accordingly, we have applied the practical expedient allowed in ASC Topic 606 and do not disclose the aggregate amount of the transaction price allocated to performance obligations or when we expect to recognize revenues that are unsatisfied (or partially unsatisfied) as of the end of the reporting period. Receivables and Contract Liabilities Receivables from Contracts with Customers At June 30, 2020, the “Accounts and notes receivable” line on our consolidated balance sheet, includes trade receivables of $ 745 million compared with $ 2,372 million at December 31, 2019, and includes both contracts with customers within the scope of ASC Topic 606 and those that are outside the scope of ASC Topic 606. We typically receive payment within 30 days or less (depending on the terms of the invoice) once delivery is made. Revenues that are outside the scope of ASC Topic 606 relate primarily to physical gas sales contracts at market prices for which we do not elect NPNS and are therefore accounted for as a derivative under ASC Topic 815. There is little distinction in the nature of the customer or credit quality of trade receivables associated with gas sold under contracts for which NPNS has not been elected compared to trade receivables where NPNS has been elected. Contract Liabilities from Contracts with Customers We have entered into contractual arrangements where we license proprietary technology to customers related to the optimization process for operating LNG plants. The agreements typically provide for negotiated payments to be made at stated milestones. The payments are not directly related to our performance under the contract and are recorded as deferred revenue to be recognized as revenue when the customer can utilize and benefit from their right to use the license. Payments are received in installments over the construction period. Millions of Dollars Contract Liabilities As of June 30, 2020 and December 31, 2019 $ 80 Amounts Recognized in the Consolidated Balance Sheet at June 30, 2020 Current liabilities $ 47 Noncurrent liabilities 33 $ 80 We expect to recognize the contract liabilities as of June 30, 2020, as revenue during 2021 and 2022. There were no revenues recognized for the three- and six-month periods ended June 30, 2020.

Segment Disclosures and Related Information	6 Months Ended
Segment Disclosures and Related Information	Jun. 30, 2020
Segment Disclosures and Related Information [Abstract]
Segment Disclosures and Related Information	Note 20—Segment Disclosures and Related Information We explore for, produce, transport and market crude oil, bitumen, natural gas, LNG and NGLs on a worldwide basis. We manage our operations through six operating segments, which are primarily defined by geographic region: Alaska, Lower 48, Canada, Europe and North Africa, Asia Pacific and Middle East, and Other International. Corporate and Other represents income and costs not directly associated with an operating segment, such as most interest expense, corporate overhead and certain technology activities, including licensing revenues. Corporate assets include all cash and cash equivalents and short-term investments. We evaluate performance and allocate resources based on net income (loss) attributable to ConocoPhillips. Intersegment sales are at prices that approximate market. Effective in the third quarter of 2020, we will restructure our segments to align with changes to our internal organization. The Middle East business will move from the Asia Pacific and Middle East segment to the Europe and North Africa segment. The segments will be renamed the Asia Pacific segment and the Europe, North Africa and Middle East segment. Accordingly, beginning in the third quarter of 2020 we will revise segment information disclosures and segment performance metrics presented within our results of operations for the current and historical comparative periods. Analysis of Results by Operating Segment Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Sales and Other Operating Revenues Alaska $ 419 1,426 1,532 2,833 Intersegment eliminations 19 - 19 - Alaska 438 1,426 1,551 2,833 Lower 48 1,433 3,809 4,536 7,962 Intersegment eliminations (28) (11) (38) (23) Lower 48 1,405 3,798 4,498 7,939 Canada 165 717 678 1,540 Intersegment eliminations - (335) (180) (585) Canada 165 382 498 955 Europe and North Africa 288 1,313 888 2,859 Asia Pacific and Middle East 450 1,030 1,453 2,373 Other International 1 - 4 - Corporate and Other 2 4 15 144 Consolidated sales and other operating revenues $ 2,749 7,953 8,907 17,103 Sales and Other Operating Revenues by Geographic Location (1) United States $ 1,844 5,225 6,061 10,911 Australia 168 311 605 870 Canada 165 382 498 955 China 67 159 213 402 Indonesia 132 226 336 431 Libya - 267 44 521 Malaysia 83 334 299 670 Norway 242 561 688 1,149 United Kingdom 46 485 156 1,189 Other foreign countries 2 3 7 5 Worldwide consolidated $ 2,749 7,953 8,907 17,103 Sales and Other Operating Revenues by Product Crude oil $ 1,216 4,813 4,660 9,394 Natural gas 1,190 1,915 2,845 4,918 Natural gas liquids 84 213 235 451 Other (2) 259 1,012 1,167 2,340 Consolidated sales and other operating revenues by product $ 2,749 7,953 8,907 17,103 (1) Sales and other operating revenues are attributable to countries based on the location of the selling operation. (2) Includes LNG and bitumen. Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Net Income (Loss) Attributable to ConocoPhillips Alaska $ (141) 462 (60) 846 Lower 48 (365) 206 (802) 399 Canada (86) 100 (195) 222 Europe and North Africa 11 407 86 614 Asia Pacific and Middle East 662 517 1,060 1,042 Other International (6) 81 22 212 Corporate and Other 185 (193) (1,590) 78 Consolidated net income (loss) attributable to ConocoPhillips $ 260 1,580 (1,479) 3,413 Millions of Dollars June 30 December 31 2020 2019 Total Assets Alaska $ 16,121 15,453 Lower 48 12,158 14,425 Canada 5,909 6,350 Europe and North Africa 7,204 8,121 Asia Pacific and Middle East 12,404 14,716 Other International 299 285 Corporate and Other 8,951 11,164 Consolidated total assets $ 63,046 70,514

Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2020
Income Taxes [Abstract]
Income Taxes	Note 21—Income Taxes Our effective tax rate for the three-month period ended June 30, 2020, was negative and is significantly lower than the comparative period in 2019 due to a number of significant transactions, and their related tax effects, impacting our $ 21 million before-tax income. The change in the rate was impacted by the gain on disposition recognized for our Australia-West assets of $ 587 million with an associated tax benefit of $ 10 million, the derecognition of $ 92 million of deferred tax assets recorded as income tax expense as a result of this divestiture, a $ 48 million refund from the Alberta Tax & Revenue Administration, and a change in our U.S. valuation allowance. For the comparative three-month period ended June 30, 2019, the effective tax rate was primarily impacted by a benefit of $ 234 million primarily related to the recognition of U.S. tax basis in our disposed U.K. subsidiaries. The effective tax rate for the six-month period ended June 30, 2020 was 7 percent, compared with 27 percent for the same period of 2019. The effective tax rate was impacted by the items noted above for the three-month period ended, June 30, 2020, as well as a shift in our before-tax income between higher and lower tax jurisdictions in 2020. As a result of the COVID-19 pandemic and the resulting economic uncertainty, many countries in which we operate, including Australia, Canada, Norway and the U.S., have enacted responsive tax legislation. During the second quarter, Norway enacted legislation to accelerate the recovery of capital expenditures and allow immediate monetization of tax losses. As a result, we have recorded an increase to our net deferred tax liability of $ 120 million and a decrease to our accrued income and other taxes liability of $ 124 million. Legislation in other jurisdictions did not have a material impact to ConocoPhillips. During the three- and six-month periods ended June 30, 2020, our valuation allowance decreased by $ 117 million and increased by $ 229 million, respectively, compared to a decrease of $ 85 million and $ 191 million for the same periods of 2019. The change to our U.S. valuation allowance for both periods relates primarily to the fair value measurement of our Cenovus Energy common shares and our expectation of the tax impact related to incremental capital gains and losses.

Supplementary Information - Condensed Consolidating Financial Information	6 Months Ended
	Jun. 30, 2020
Supplementary Information - Condensed Consolidating Financial Information [Abstract]
Supplementary Information - Condensed Consolidating Financial Information	Supplementary Information—Condensed Consolidating Financial Information We have various cross guarantees among ConocoPhillips, ConocoPhillips Company and Burlington Resources LLC, with respect to publicly held debt securities. ConocoPhillips Company is 100 percent owned by ConocoPhillips. Burlington Resources LLC is 100 percent owned by ConocoPhillips Company. ConocoPhillips and/or ConocoPhillips Company have fully and unconditionally guaranteed the payment obligations of Burlington Resources LLC, with respect to its publicly held debt securities. Similarly, ConocoPhillips has fully and unconditionally guaranteed the payment obligations of ConocoPhillips Company with respect to its publicly held debt securities. In addition, ConocoPhillips Company has fully and unconditionally guaranteed the payment obligations of ConocoPhillips with respect to its publicly held debt securities. All guarantees are joint and several. The following condensed consolidating financial information presents the results of operations, financial position and cash flows for: ● ConocoPhillips, ConocoPhillips Company and Burlington Resources LLC (in each case, reflecting investments in subsidiaries utilizing the equity method of accounting). ● All other nonguarantor subsidiaries of ConocoPhillips. ● The consolidating adjustments necessary to present ConocoPhillips’ results on a consolidated basis. This condensed consolidating financial information should be read in conjunction with the accompanying consolidated financial statements and notes. In May 2020, ConocoPhillips received a $ 2.2 billion return of earnings and a $ 0.8 billion return of capital from ConocoPhillips Company to settle certain accumulated intercompany balances. This transaction had no impact on our consolidated financial statements. In May 2020, ConocoPhillips Company received a $ 2.4 billion return of earnings and a $ 0.8 billion return of capital from a nonguarantor subsidiary to settle certain accumulated intercompany balances. This transaction had no impact on our consolidated financial statements. Millions of Dollars Three Months Ended June 30, 2020 Income Statement ConocoPhillips ConocoPhillips Company Burlington Resources LLC All Other Subsidiaries Consolidating Adjustments Total Consolidated Revenues and Other Income Sales and other operating revenues $ - 1,329 - 1,420 - 2,749 Equity in earnings (losses) of affiliates 315 231 (304) 76 (241) 77 Gain on dispositions - 7 - 589 - 596 Other income 1 563 - 30 - 594 Intercompany revenues - 39 1 231 (271) - Total Revenues and Other Income 316 2,169 (303) 2,346 (512) 4,016 Costs and Expenses Purchased commodities - 1,188 - 194 (252) 1,130 Production and operating expenses 1 218 - 829 (1) 1,047 Selling, general and administrative expenses 3 138 - 15 - 156 Exploration expenses - 19 - 78 - 97 Depreciation, depletion and amortization - 160 - 998 - 1,158 Impairments - 1 - (3) - (2) Taxes other than income taxes - 23 - 118 - 141 Accretion on discounted liabilities - 3 - 63 - 66 Interest and debt expense 67 98 33 22 (18) 202 Foreign currency transaction (gains) losses - (18) - 25 - 7 Other expenses - (1) - (6) - (7) Total Costs and Expenses 71 1,829 33 2,333 (271) 3,995 Income (loss) before income taxes 245 340 (336) 13 (241) 21 Income tax provision (benefit) (15) 25 (7) (260) - (257) Net income (loss) 260 315 (329) 273 (241) 278 Less: net income attributable to noncontrolling interests - - - (18) - (18) Net Income (Loss) Attributable to ConocoPhillips $ 260 315 (329) 255 (241) 260 Comprehensive Income (Loss) Attributable to ConocoPhillips $ 580 635 (83) 566 (1,118) 580 Income Statement Three Months Ended June 30, 2019 Revenues and Other Income Sales and other operating revenues $ - 3,487 - 4,466 - 7,953 Equity in earnings of affiliates 1,637 2,088 533 173 (4,258) 173 Gain on dispositions - 10 - 72 - 82 Other income - 44 1 127 - 172 Intercompany revenues - 23 10 1,782 (1,815) - Total Revenues and Other Income 1,637 5,652 544 6,620 (6,073) 8,380 Costs and Expenses Purchased commodities - 3,124 - 946 (1,396) 2,674 Production and operating expenses 1 657 - 1,113 (353) 1,418 Selling, general and administrative expenses 2 83 - 44 - 129 Exploration expenses - 47 - 75 - 122 Depreciation, depletion and amortization - 148 - 1,342 - 1,490 Impairments - - - 1 - 1 Taxes other than income taxes - 33 - 161 - 194 Accretion on discounted liabilities - 4 - 83 - 87 Interest and debt expense 70 143 33 (15) (66) 165 Foreign currency transaction losses - 23 - 5 - 28 Other expenses - 13 - 1 - 14 Total Costs and Expenses 73 4,275 33 3,756 (1,815) 6,322 Income before income taxes 1,564 1,377 511 2,864 (4,258) 2,058 Income tax provision (benefit) (16) (260) (4) 741 - 461 Net income 1,580 1,637 515 2,123 (4,258) 1,597 Less: net income attributable to noncontrolling interests - - - (17) - (17) Net Income Attributable to ConocoPhillips $ 1,580 1,637 515 2,106 (4,258) 1,580 Comprehensive Income Attributable to ConocoPhillips $ 1,667 1,724 623 2,182 (4,529) 1,667 See Notes to Consolidated Financial Statements. Millions of Dollars Six Months Ended June 30, 2020 Income Statement ConocoPhillips ConocoPhillips Company Burlington Resources LLC All Other Subsidiaries Consolidating Adjustments Total Consolidated Revenues and Other Income Sales and other operating revenues $ - 4,232 - 4,675 - 8,907 Equity in earnings (losses) of affiliates (1,366) 351 (730) 309 1,747 311 Gain on dispositions - 16 - 538 - 554 Other income (loss) - (1,083) 1 137 - (945) Intercompany revenues - 69 4 1,138 (1,211) - Total Revenues and Other Income (1,366) 3,585 (725) 6,797 536 8,827 Costs and Expenses Purchased commodities - 3,800 - 1,140 (1,149) 3,791 Production and operating expenses 1 378 1 1,842 (2) 2,220 Selling, general and administrative expenses 5 115 - 38 (5) 153 Exploration expenses - 44 - 241 - 285 Depreciation, depletion and amortization - 307 - 2,262 - 2,569 Impairments - 3 - 516 - 519 Taxes other than income taxes - 71 - 320 - 391 Accretion on discounted liabilities - 7 - 126 - 133 Interest and debt expense 137 205 66 51 (55) 404 Foreign currency transaction gains - (19) - (64) - (83) Other expenses - (7) - (6) - (13) Total Costs and Expenses 143 4,904 67 6,466 (1,211) 10,369 Income (loss) before income taxes (1,509) (1,319) (792) 331 1,747 (1,542) Income tax provision (benefit) (30) 47 (13) (113) - (109) Net income (loss) (1,479) (1,366) (779) 444 1,747 (1,433) Less: net income attributable to noncontrolling interests - - - (46) - (46) Net Income (Loss) Attributable to ConocoPhillips $ (1,479) (1,366) (779) 398 1,747 (1,479) Comprehensive Loss Attributable to ConocoPhillips $ (1,947) (1,834) (1,130) (83) 3,047 (1,947) Income Statement Six Months Ended June 30, 2019 Revenues and Other Income Sales and other operating revenues $ - 7,468 - 9,635 - 17,103 Equity in earnings of affiliates 3,527 3,710 1,006 359 (8,241) 361 Gain on dispositions - 5 - 94 - 99 Other income 1 552 1 320 - 874 Intercompany revenues - 49 23 2,943 (3,015) - Total Revenues and Other Income 3,528 11,784 1,030 13,351 (11,256) 18,437 Costs and Expenses Purchased commodities - 6,621 - 2,250 (2,522) 6,349 Production and operating expenses 1 837 1 2,204 (354) 2,689 Selling, general and administrative expenses 6 212 - 69 (5) 282 Exploration expenses - 94 - 138 - 232 Depreciation, depletion and amortization - 284 - 2,752 - 3,036 Impairments - - - 2 - 2 Taxes other than income taxes - 79 - 390 - 469 Accretion on discounted liabilities - 8 - 165 - 173 Interest and debt expense 139 292 66 35 (134) 398 Foreign currency transaction losses - 29 - 11 - 40 Other expenses - 25 - (3) - 22 Total Costs and Expenses 146 8,481 67 8,013 (3,015) 13,692 Income before income taxes 3,382 3,303 963 5,338 (8,241) 4,745 Income tax provision (benefit) (31) (224) (9) 1,566 - 1,302 Net income 3,413 3,527 972 3,772 (8,241) 3,443 Less: net income attributable to noncontrolling interests - - - (30) - (30) Net Income Attributable to ConocoPhillips $ 3,413 3,527 972 3,742 (8,241) 3,413 Comprehensive Income Attributable to ConocoPhillips $ 3,689 3,803 1,204 3,998 (9,005) 3,689 See Notes to Consolidated Financial Statements. Millions of Dollars June 30, 2020 Balance Sheet ConocoPhillips ConocoPhillips Company Burlington Resources LLC All Other Subsidiaries Consolidating Adjustments Total Consolidated Assets Cash and cash equivalents $ - 1,801 - 1,106 - 2,907 Short-term investments - 3,934 - 51 - 3,985 Accounts and notes receivable 5 850 2 1,944 (1,269) 1,532 Investment in Cenovus Energy - 971 - - - 971 Inventories - 125 - 857 - 982 Prepaid expenses and other current assets 1 209 - 466 - 676 Total Current Assets 6 7,890 2 4,424 (1,269) 11,053 Investments, loans and long-term receivables* 29,249 39,784 10,711 13,457 (84,700) 8,501 Net properties, plants and equipment - 3,561 - 37,559 - 41,120 Other assets 4 730 248 2,087 (697) 2,372 Total Assets $ 29,259 51,965 10,961 57,527 (86,666) 63,046 Liabilities and Stockholders’ Equity Accounts payable $ - 1,394 109 1,846 (1,269) 2,080 Short-term debt (3) 4 14 131 - 146 Accrued income and other taxes - 91 - 221 - 312 Employee benefit obligations - 327 - 95 - 422 Other accruals 85 356 35 669 - 1,145 Total Current Liabilities 82 2,172 158 2,962 (1,269) 4,105 Long-term debt 3,795 6,667 2,123 2,267 - 14,852 Asset retirement obligations and accrued environmental costs - 339 - 5,126 - 5,465 Deferred income taxes - - - 4,598 (697) 3,901 Employee benefit obligations - 1,186 - 400 - 1,586 Other liabilities and deferred credits* 447 5,814 919 8,925 (14,461) 1,644 Total Liabilities 4,324 16,178 3,200 24,278 (16,427) 31,553 Retained earnings 30,793 17,543 1,384 7,680 (20,049) 37,351 Other common stockholders’ equity (5,858) 18,244 6,377 25,569 (50,190) (5,858) Total Liabilities and Stockholders’ Equity $ 29,259 51,965 10,961 57,527 (86,666) 63,046 Includes intercompany loans. Balance Sheet December 31, 2019 Assets Cash and cash equivalents $ - 3,439 - 1,649 - 5,088 Short-term investments - 2,670 - 358 - 3,028 Accounts and notes receivable 5 2,088 2 3,881 (2,575) 3,401 Investment in Cenovus Energy - 2,111 - - - 2,111 Inventories - 168 - 858 - 1,026 Prepaid expenses and other current assets 1 352 - 1,906 - 2,259 Total Current Assets 6 10,828 2 8,652 (2,575) 16,913 Investments, loans and long-term receivables 34,076 44,969 11,662 15,612 (97,413) 8,906 Net properties, plants and equipment - 3,552 - 38,717 - 42,269 Other assets 3 765 253 2,210 (805) 2,426 Total Assets $ 34,085 60,114 11,917 65,191 (100,793) 70,514 Liabilities and Stockholders’ Equity Accounts payable $ - 2,670 21 3,084 (2,575) 3,200 Short-term debt (3) 4 13 91 - 105 Accrued income and other taxes - 79 - 951 - 1,030 Employee benefit obligations - 508 - 155 - 663 Other accruals 84 408 35 1,518 - 2,045 Total Current Liabilities 81 3,669 69 5,799 (2,575) 7,043 Long-term debt 3,794 6,670 2,129 2,197 - 14,790 Asset retirement obligations and accrued environmental costs - 322 - 5,030 - 5,352 Deferred income taxes - - - 5,438 (804) 4,634 Employee benefit obligations - 1,329 - 452 - 1,781 Other liabilities and deferred credits* 1,787 7,514 826 9,271 (17,534) 1,864 Total Liabilities 5,662 19,504 3,024 28,187 (20,913) 35,464 Retained earnings 33,184 21,898 2,164 10,481 (27,985) 39,742 Other common stockholders’ equity (4,761) 18,712 6,729 26,454 (51,895) (4,761) Noncontrolling interests - - - 69 - 69 Total Liabilities and Stockholders’ Equity $ 34,085 60,114 11,917 65,191 (100,793) 70,514 Includes intercompany loans. See Notes to Consolidated Financial Statements. Millions of Dollars Six Months Ended June 30, 2020 Statement of Cash Flows ConocoPhillips ConocoPhillips Company Burlington Resources LLC All Other Subsidiaries Consolidating Adjustments Total Consolidated Cash Flows From Operating Activities Net Cash Provided by Operating Activities $ 2,115 1,926 36 2,751 (4,566) 2,262 Cash Flows From Investing Activities Capital expenditures and investments - (322) (14) (2,203) 14 (2,525) Working capital changes associated with investing activities - (49) - (202) - (251) Proceeds from asset dispositions 765 1,327 - 1,174 (1,953) 1,313 Sales (purchases) of short-term investments - (1,324) - 294 - (1,030) Long-term advances/loans—related parties - (10) - - 10 - Collection of advances/loans—related parties - 71 - 66 (71) 66 Intercompany cash management (1,339) (269) (22) 1,630 - - Other - - - (35) - (35) Net Cash Provided by (Used in) Investing Activities (574) (576) (36) 724 (2,000) (2,462) Cash Flows From Financing Activities Issuance of debt - - - 10 (10) - Repayment of debt - - - (285) 71 (214) Issuance of company common stock 95 - - - (93) 2 Repurchase of company common stock (726) - - - - (726) Dividends paid (913) (2,990) - (3,200) 6,190 (913) Other 3 - - (439) 408 (28) Net Cash Used in Financing Activities (1,541) (2,990) - (3,914) 6,566 (1,879) Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash - - - (93) - (93) Net Change in Cash, Cash Equivalents and Restricted Cash - (1,640) - (532) - (2,172) Cash, cash equivalents and restricted cash at beginning of period - 3,443 - 1,919 - 5,362 Cash, Cash Equivalents and Restricted Cash at End of Period $ - 1,803 - 1,387 - 3,190 Statement of Cash Flows Six Months Ended June 30, 2019 Cash Flows From Operating Activities Net Cash Provided by (Used in) Operating Activities $ 1,571 5,050 (40) 4,768 (5,564) 5,785 Cash Flows From Investing Activities Capital expenditures and investments - (653) - (2,882) 169 (3,366) Working capital changes associated with investing activities - 41 - (17) - 24 Proceeds from asset dispositions - 217 - 559 (75) 701 Purchases of short-term investments - (50) - (435) - (485) Long-term advances/loans—related parties - (19) - - 19 - Collection of advances/loans—related parties - 69 - 82 (89) 62 Intercompany cash management 1,082 (3,256) 40 2,134 - - Other - 118 - 8 - 126 Net Cash Provided by (Used in) Investing Activities 1,082 (3,533) 40 (551) 24 (2,938) Cash Flows From Financing Activities Issuance of debt - - - 19 (19) - Repayment of debt - (21) - (106) 89 (38) Issuance of company common stock 43 - - - (79) (36) Repurchase of company common stock (2,002) - - - - (2,002) Dividends paid (696) (1,660) - (3,983) 5,643 (696) Other 2 - - 37 (94) (55) Net Cash Used in Financing Activities (2,653) (1,681) - (4,033) 5,540 (2,827) Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash - (1) - 27 - 26 Net Change in Cash, Cash Equivalents and Restricted Cash - (165) - 211 - 46 Cash, cash equivalents and restricted cash at beginning of period - 1,428 - 4,723 - 6,151 Cash, Cash Equivalents and Restricted Cash at End of Period $ - 1,263 - 4,934 - 6,197

Basis of Presentation (Policies)	6 Months Ended
Basis of Presentation (Policies)	Jun. 30, 2020
Policy Text Block [Abstract]
Basis of Accounting, Policy [Policy Text Block]	The interim-period financial information presented in the financial statements included in this report is unaudited and, in the opinion of management, includes all known accruals and adjustments necessary for a fair presentation of the consolidated financial position of ConocoPhillips and its results of operations and cash flows for such periods. All such adjustments are of a normal and recurring nature unless otherwise disclosed. Certain notes and other information have been condensed or omitted from the interim financial statements included in this report. Therefore, these financial statements should be read in conjunction with the consolidated financial statements and notes included in our 2019 Annual Report on Form 10-K. The unrealized (gain) loss on investment in Cenovus Energy included on our consolidated statement of cash flows, previously reflected on the line item “Other” within net cash provided by operating activities, has been reclassified in the comparative period to conform with the current period’s presentation.
Revenue Recognition, Policy [Policy Text Block]	Typically, our commodity sales contracts are less than 12 months in duration; however, in certain specific cases may extend longer, which may be out to the end of field life. We have long-term commodity sales contracts which use prevailing market prices at the time of delivery, and under these contracts, the market- based variable consideration for each performance obligation (i.e., delivery of commodity) is allocated to each wholly unsatisfied performance obligation within the contract. Accordingly, we have applied the practical expedient allowed in ASC Topic 606 and do not disclose the aggregate amount of the transaction price allocated to performance obligations or when we expect to recognize revenues that are unsatisfied (or partially unsatisfied) as of the end of the reporting period.
Long-Duration Contracts Revenue Recognition, Policy [Policy Text Block]	We have entered into contractual arrangements where we license proprietary technology to customers related to the optimization process for operating LNG plants. The agreements typically provide for negotiated payments to be made at stated milestones. The payments are not directly related to our performance under the contract and are recorded as deferred revenue to be recognized as revenue when the customer can utilize and benefit from their right to use the license. Payments are received in installments over the construction period.

Inventories (Tables)	6 Months Ended
Inventories (Tables)	Jun. 30, 2020
Inventories [Abstract]
Inventories	Note 3—Inventories Inventories consisted of the following: Millions of Dollars June 30 December 31 2020 2019 Crude oil and natural gas $ 452 472 Materials and supplies 530 554 $ 982 1,026

Impairments (Tables)	6 Months Ended
Impairments (Tables)	Jun. 30, 2020
Impairments [Abstract]
Before-tax impairment charges [Table Text Block]	Note 8—Impairments During the three- and six-month periods ended June 30, 2020 and 2019, we recognized before-tax impairment charges within the following segments: Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Lower 48 2 - 513 - Europe and North Africa (4) 1 6 2 $ (2) 1 519 2

Changes in Equity (Tables)	6 Months Ended
Changes in Equity (Tables)	Jun. 30, 2020
Stockholders' Equity Note [Abstract]
Schedule of Stockholders Equity [Table Text Block]	Note 10—Changes in Equity Millions of Dollars Attributable to ConocoPhillips Common Stock Par Value Capital in Excess of Par Treasury Stock Accum. Other Comprehensive Loss Retained Earnings Non- Controlling Interests Total For the three months ended June 30, 2020 Balances at March 31, 2020 $ 18 47,027 (47,130) (6,145) 37,545 72 31,387 Net income 260 18 278 Other comprehensive income 320 320 Dividends paid ($ 0.42 per common share) (455) (455) Distributions to noncontrolling interests and other (6) (6) Disposition (84) (84) Distributed under benefit plans 52 52 Other 1 1 Balances at June 30, 2020 $ 18 47,079 (47,130) (5,825) 37,351 - 31,493 For the six months ended June 30, 2020 Balances at December 31, 2019 $ 18 46,983 (46,405) (5,357) 39,742 69 35,050 Net income (loss) (1,479) 46 (1,433) Other comprehensive loss (468) (468) Dividends paid ($ 0.84 per common share) (913) (913) Repurchase of company common stock (726) (726) Distributions to noncontrolling interests and other (32) (32) Disposition (84) (84) Distributed under benefit plans 96 96 Other 1 1 1 3 Balances at June 30, 2020 $ 18 47,079 (47,130) (5,825) 37,351 - 31,493 Millions of Dollars Attributable to ConocoPhillips Common Stock Par Value Capital in Excess of Par Treasury Stock Accum. Other Comprehensive Loss Retained Earnings Non- Controlling Interests Total For the three months ended June 30, 2019 Balances at March 31, 2019 $ 18 46,877 (43,656) (5,914) 35,534 122 32,981 Net income 1,580 17 1,597 Other comprehensive income 87 87 Dividends paid ($ 0.31 per common share) (346) (346) Repurchase of company common stock (1,250) (1,250) Distributions to noncontrolling interests and other (43) (43) Distributed under benefit plans 45 45 Other 1 2 3 Balances at June 30, 2019 $ 18 46,922 (44,906) (5,827) 36,769 98 33,074 For the six months ended June 30, 2019 Balances at December 31, 2018 $ 18 46,879 (42,905) (6,063) 34,010 125 32,064 Net income 3,413 30 3,443 Other comprehensive income 276 276 Dividends paid ($ 0.61 per common share) (696) (696) Repurchase of company common stock (2,002) (2,002) Distributions to noncontrolling interests and other (60) (60) Distributed under benefit plans 43 43 Changes in Accounting Principles* (40) 40 - Other 1 2 3 6 Balances at June 30, 2019 $ 18 46,922 (44,906) (5,827) 36,769 98 33,074 *Cumulative effect of the adoption of ASU No. 2018-02, "Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income."

Derivative and Financial Instruments (Tables)	6 Months Ended
Derivative and Financial Instruments (Tables)	Jun. 30, 2020
Derivative and Financial Instruments [Abstract]
Balance sheet location and fair value amounts of derivatives	The following table presents the gross fair values of our commodity derivatives, excluding collateral, and the line items where they appear on our consolidated balance sheet: Millions of Dollars June 30 December 31 2020 2019 Assets Prepaid expenses and other current assets $ 316 288 Other assets 35 34 Liabilities Other accruals 310 283 Other liabilities and deferred credits 25 28 The following table presents the gross fair values of our foreign currency exchange derivatives, excluding collateral, and the line items where they appear on our consolidated balance sheet: Millions of Dollars June 30 December 31 2020 2019 Assets Prepaid expenses and other current assets $ 23 1 Liabilities Other accruals 1 20 Other liabilities and deferred credits - 8
Income statement location and gain/loss amounts of derivatives	The gains (losses) from commodity derivatives incurred, and the line items where they appear on our consolidated income statement were: Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Sales and other operating revenues $ (50) 45 (3) 64 Other income (loss) 3 2 5 1 Purchased commodities 24 (31) (2) (51) The (gains) losses from foreign currency exchange derivatives incurred, and the line item where they appear on our consolidated income statement were: Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Foreign currency transaction (gain) loss $ 12 23 (62) 21
Net exposures from outstanding commodity derivative contracts	The table below summarizes our material net exposures resulting from outstanding commodity derivative contracts: Open Position Long/(Short) June 30 December 31 2020 2019 Commodity Natural gas and power (billions of cubic feet equivalent) Fixed price (20) (5) Basis (27) (23) We had the following net notional position of outstanding foreign currency exchange derivatives: In Millions Notional Currency June 30 December 31 2020 2019 Foreign Currency Exchange Derivatives Buy GBP, sell EUR GBP 7 4 Sell CAD, buy USD CAD 427 1,337
Net carrying amount of held to maturity investments	The following investments are carried on our consolidated balance sheet at cost, plus accrued interest: Millions of Dollars Carrying Amount Cash and Cash Equivalents Short-Term Investments Investments and Long- Term Receivables June 30 December 31 June 30 December 31 June 30 December 31 2020 2019 2020 2019 2020 2019 Cash $ 575 759 Demand Deposits 917 1,483 - - - - Time Deposits Remaining maturities from 1 to 90 days 1,396 2,030 2,339 1,395 - - Remaining maturities from 91 to 180 days - - 1,302 465 - - Remaining maturities within one year - - 14 - - - Remaining maturities greater than one year through five years - - - - 3 - Commercial Paper Remaining maturities from 1 to 90 days - 413 - 1,069 - - Remaining maturities from 91 to 180 days - - 50 - - - U.S. Government Obligations Remaining maturities from 1 to 90 days 15 394 - - - - $ 2,903 5,079 3,705 2,929 3 -
Debt Securities Carried at Fair Value	The following investments in debt securities classified as available for sale are carried on our consolidated balance sheet at fair value: Millions of Dollars Carrying Amount Cash and Cash Equivalents Short-Term Investments Investments and Long- Term Receivables June 30 2020 December 31 2019 June 30 2020 December 31 2019 June 30 2020 December 31 2019 Corporate Bonds Maturities within one year $ - 1 144 59 - - Maturities greater than one year through five years - - - - 134 99 Commercial Paper Maturities within one year 4 8 126 30 - - U.S. Government Obligations Maturities within one year - - 10 10 - - Maturities greater than one year through five years - - - - 16 15 U.S. Government Agency Obligations Maturities greater than one year through five years - - - - 4 - Asset-backed Securities Maturities greater than one year through five years - - - - 37 19 $ 4 9 280 99 191 133
Amortized cost basis and fair value of investments in debt securities classified as available for sale	The following table summarizes the amortized cost basis and fair value of investments in debt securities classified as available for sale: Millions of Dollars June 30, 2020 December 31, 2019 Amortized Cost Basis Fair Value Amortized Cost Basis Fair Value Major Security Type Corporate bonds $ 276 278 159 159 Commercial paper 130 130 38 38 U.S. government obligations 25 26 25 25 U.S. government agency obligations 4 4 - - Asset-backed securities 37 37 19 19 $ 472 475 241 241

Fair Value Measurement (Tables)	6 Months Ended
Fair Value Measurement (Tables)	Jun. 30, 2020
Fair Value Measurement [Abstract]
Fair value hierarchy for gross financial assets and liabilities	Millions of Dollars June 30, 2020 December 31, 2019 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Investment in Cenovus Energy $ 971 - - 971 2,111 - - 2,111 Investments in debt securities 26 449 - 475 25 216 - 241 Commodity derivatives 207 120 24 351 172 114 36 322 Total assets $ 1,204 569 24 1,797 2,308 330 36 2,674 Liabilities Commodity derivatives $ 216 103 16 335 174 115 22 311 Total liabilities $ 216 103 16 335 174 115 22 311
Commodity derivative balances subject to right of setoff	The following table summarizes those commodity derivative balances subject to the right of setoff as presented on our consolidated balance sheet. We have elected to offset the recognized fair value amounts for multiple derivative instruments executed with the same counterparty in our financial statements when a legal right of setoff exists. Millions of Dollars Amounts Subject to Right of Setoff Gross Amounts Not Gross Net Amounts Subject to Gross Amounts Amounts Cash Net Recognized Right of Setoff Amounts Offset Presented Collateral Amounts June 30, 2020 Assets $ 351 1 350 233 117 8 109 Liabilities 335 2 333 233 100 22 78 December 31, 2019 Assets $ 322 3 319 193 126 4 122 Liabilities 311 4 307 193 114 12 102 At June 30, 2020 and December 31, 2019, we did not present any amounts gross on our consolidated balance sheet where we had the right of setoff.
Values of assets, by major category, measured at fair value on a nonrecurring basis	Non-Recurring Fair Value Measurement The following table summarizes the fair value hierarchy by major category and date of remeasurement for assets accounted for at fair value on a non-recurring basis: Millions of Dollars Fair Value Measurement Using Fair Value Level 3 Inputs Before-Tax Loss Net PP&E (held for use) March 31, 2020 $ 77 77 510
Range and arithmetic average of significant unobservable inputs - Wind River Basin	Fair Value (Millions of Dollars) Valuation Technique Unobservable Inputs Range (Arithmetic Average) March 31, 2020 Wind River Basin $ 77 Discounted cash flow Natural gas production (MMCFD) 8.4 - 55.2 ( 22.9 ) Natural gas price outlook* ($/MMBTU) $ 2.67 - $ 9.17 ($ 5.68 ) Discount rate** 7.9 % - 9.1 % ( 8.3 %) Henry Hub natural gas price outlook based on external pricing service companies' outlooks for years 2022-2034; future prices escalated at 2.2 % annually after year 2034. *Determined as the weighted average cost of capital of a group of peer companies, adjusted for risks where appropriate.
Net fair value of financial instruments	The following table summarizes the net fair value of financial instruments (i.e., adjusted where the right of setoff exists for commodity derivatives): Millions of Dollars Carrying Amount Fair Value June 30 December 31 June 30 December 31 2020 2019 2020 2019 Financial assets Investment in Cenovus Energy $ 971 2,111 971 2,111 Commodity derivatives 110 125 110 125 Investments in debt securities 475 241 475 241 Total loans and advances—related parties 272 339 272 339 Financial liabilities Total debt, excluding finance leases 14,156 14,175 18,307 18,108 Commodity derivatives 80 106 80 106

Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
Accumulated Other Comprehensive Loss (Tables)	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Components of accumulated other comprehensive loss in the equity section of the balance sheet	Note 15—Accumulated Other Comprehensive Loss Accumulated other comprehensive loss in the equity section of our consolidated balance sheet included: Millions of Dollars Defined Benefit Plans Net Unrealized Gain on Securities Foreign Currency Translation Accumulated Other Comprehensive Income (Loss) December 31, 2019 $ (350) - (5,007) (5,357) Other comprehensive income (loss) 18 2 (488) (468) June 30, 2020 $ (332) 2 (5,495) (5,825)
Items reclassified out of accumulated other comprehensive income (loss)	The following table summarizes reclassifications out of accumulated other comprehensive loss and into net income (loss): Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Defined benefit plans $ 8 17 16 30 The above amounts are included in the computation of net periodic benefit cost and are presented net of tax expense of $ 2 million and $ 5 million for the three-month periods ended June 30, 2020 and June 30, 2019, respectively, and $ 4 million and $ 10 million for the six-month periods ended June 30, 2020 and June 30, 2019, respectively. See Note 17—Employee Benefit Plans, for additional information.

Cash Flow Information (Tables)	6 Months Ended
Cash Flow Information (Tables)	Jun. 30, 2020
Cash Flow Information [Abstract]
Cash Flow Information	Note 16—Cash Flow Information Millions of Dollars Six Months Ended June 30 2020 2019 Cash Payments Interest $ 397 414 Income taxes 761 1,572 Net Sales (Purchases) of Investments Short-term investments purchased $ (7,021) (982) Short-term investments sold 6,147 497 Long-term investments purchased (208) - Long-term investments sold 52 - $ (1,030) (485)

Employee Benefit Plans (Tables)	6 Months Ended
Employee Benefit Plans (Tables)	Jun. 30, 2020
Employee Benefit Plans [Abstract]
Pension and Postretirement Plans	Note 17—Employee Benefit Plans Pension and Postretirement Plans Millions of Dollars Pension Benefits Other Benefits 2020 2019 2020 2019 U.S. Int'l. U.S. Int'l. Components of Net Periodic Benefit Cost Three Months Ended March 31, June 30, September 30, December 31 Service cost $ 21 13 19 18 - - Interest cost 17 20 21 26 1 3 Expected return on plan assets (21) (34) (18) (35) - - Amortization of prior service credit - - - (1) (8) (9) Recognized net actuarial loss 13 5 13 8 - - Settlements - - 11 - - - Net periodic benefit cost $ 30 4 46 16 (7) (6) Six Months Ended March 31, June 30, September 30, December 31 Service cost $ 42 27 39 37 1 - Interest cost 34 42 42 52 3 5 Expected return on plan assets (42) (71) (36) (70) - - Amortization of prior service credit - - - (1) (16) (17) Recognized net actuarial loss (gain) 25 11 26 16 - (1) Settlements 1 (1) 17 - - - Net periodic benefit cost $ 60 8 88 34 (12) (13)

Related Party Transactions (Tables)	6 Months Ended
Related Party Transactions (Tables)	Jun. 30, 2020
Related Party Transactions [Abstract]
Significant transactions with related parties	Note 18—Related Party Transactions Our related parties primarily include equity method investments and certain trusts for the benefit of employees. For disclosures on trusts for the benefit of employees, see Note 17—Employee Benefit Plans. Significant transactions with our equity affiliates were: Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Operating revenues and other income $ 21 26 38 47 Purchases - 17 - 38 Operating expenses and selling, general and administrative expenses 12 14 27 28 Net interest income* (2) (3) (4) (7) *We paid interest to, or received interest from, various affiliates. See Note 5—Investments, Loans and Long-Term Receivables, for additional information on loans to affiliated companies.

Sales and Other Operating Revenue (Tables)	6 Months Ended
Sales and Other Operating Revenue (Tables)	Jun. 30, 2020
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue [Table Text Block]	Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Revenue from contracts with customers $ 1,919 6,633 6,830 13,692 Revenue from contracts outside the scope of ASC Topic 606 Physical contracts meeting the definition of a derivative 856 1,371 2,152 3,452 Financial derivative contracts (26) (51) (75) (41) Consolidated sales and other operating revenues $ 2,749 7,953 8,907 17,103 Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Revenue from Outside the Scope of ASC Topic 606 by Segment Lower 48 $ 698 1,111 1,674 2,724 Canada 121 100 300 341 Europe and North Africa 37 160 178 387 Physical contracts meeting the definition of a derivative $ 856 1,371 2,152 3,452 Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Revenue from Outside the Scope of ASC Topic 606 by Product Crude oil $ 26 165 118 353 Natural gas 763 1,095 1,853 2,863 Other 67 111 181 236 Physical contracts meeting the definition of a derivative $ 856 1,371 2,152 3,452
Contract with Customer, Asset and Liability [Table Text Block]	Millions of Dollars Contract Liabilities As of June 30, 2020 and December 31, 2019 $ 80 Amounts Recognized in the Consolidated Balance Sheet at June 30, 2020 Current liabilities $ 47 Noncurrent liabilities 33 $ 80

Segment Disclosures and Related Information (Tables)	6 Months Ended
Segment Disclosures and Related Information (Tables)	Jun. 30, 2020
Segment Disclosures and Related Information [Abstract]
Analysis of Results by Operating Segment	Analysis of Results by Operating Segment Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Sales and Other Operating Revenues Alaska $ 419 1,426 1,532 2,833 Intersegment eliminations 19 - 19 - Alaska 438 1,426 1,551 2,833 Lower 48 1,433 3,809 4,536 7,962 Intersegment eliminations (28) (11) (38) (23) Lower 48 1,405 3,798 4,498 7,939 Canada 165 717 678 1,540 Intersegment eliminations - (335) (180) (585) Canada 165 382 498 955 Europe and North Africa 288 1,313 888 2,859 Asia Pacific and Middle East 450 1,030 1,453 2,373 Other International 1 - 4 - Corporate and Other 2 4 15 144 Consolidated sales and other operating revenues $ 2,749 7,953 8,907 17,103 Sales and Other Operating Revenues by Geographic Location (1) United States $ 1,844 5,225 6,061 10,911 Australia 168 311 605 870 Canada 165 382 498 955 China 67 159 213 402 Indonesia 132 226 336 431 Libya - 267 44 521 Malaysia 83 334 299 670 Norway 242 561 688 1,149 United Kingdom 46 485 156 1,189 Other foreign countries 2 3 7 5 Worldwide consolidated $ 2,749 7,953 8,907 17,103 Sales and Other Operating Revenues by Product Crude oil $ 1,216 4,813 4,660 9,394 Natural gas 1,190 1,915 2,845 4,918 Natural gas liquids 84 213 235 451 Other (2) 259 1,012 1,167 2,340 Consolidated sales and other operating revenues by product $ 2,749 7,953 8,907 17,103 (1) Sales and other operating revenues are attributable to countries based on the location of the selling operation. (2) Includes LNG and bitumen. Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Net Income (Loss) Attributable to ConocoPhillips Alaska $ (141) 462 (60) 846 Lower 48 (365) 206 (802) 399 Canada (86) 100 (195) 222 Europe and North Africa 11 407 86 614 Asia Pacific and Middle East 662 517 1,060 1,042 Other International (6) 81 22 212 Corporate and Other 185 (193) (1,590) 78 Consolidated net income (loss) attributable to ConocoPhillips $ 260 1,580 (1,479) 3,413 Millions of Dollars June 30 December 31 2020 2019 Total Assets Alaska $ 16,121 15,453 Lower 48 12,158 14,425 Canada 5,909 6,350 Europe and North Africa 7,204 8,121 Asia Pacific and Middle East 12,404 14,716 Other International 299 285 Corporate and Other 8,951 11,164 Consolidated total assets $ 63,046 70,514

Supplementary Information - Condensed Consolidating Financial Information (Tables)	6 Months Ended
	Jun. 30, 2020
Supplementary Information - Condensed Consolidating Financial Information [Abstract]
Condensed Consolidated Income Statement	Millions of Dollars Three Months Ended June 30, 2020 Income Statement ConocoPhillips ConocoPhillips Company Burlington Resources LLC All Other Subsidiaries Consolidating Adjustments Total Consolidated Revenues and Other Income Sales and other operating revenues $ - 1,329 - 1,420 - 2,749 Equity in earnings (losses) of affiliates 315 231 (304) 76 (241) 77 Gain on dispositions - 7 - 589 - 596 Other income 1 563 - 30 - 594 Intercompany revenues - 39 1 231 (271) - Total Revenues and Other Income 316 2,169 (303) 2,346 (512) 4,016 Costs and Expenses Purchased commodities - 1,188 - 194 (252) 1,130 Production and operating expenses 1 218 - 829 (1) 1,047 Selling, general and administrative expenses 3 138 - 15 - 156 Exploration expenses - 19 - 78 - 97 Depreciation, depletion and amortization - 160 - 998 - 1,158 Impairments - 1 - (3) - (2) Taxes other than income taxes - 23 - 118 - 141 Accretion on discounted liabilities - 3 - 63 - 66 Interest and debt expense 67 98 33 22 (18) 202 Foreign currency transaction (gains) losses - (18) - 25 - 7 Other expenses - (1) - (6) - (7) Total Costs and Expenses 71 1,829 33 2,333 (271) 3,995 Income (loss) before income taxes 245 340 (336) 13 (241) 21 Income tax provision (benefit) (15) 25 (7) (260) - (257) Net income (loss) 260 315 (329) 273 (241) 278 Less: net income attributable to noncontrolling interests - - - (18) - (18) Net Income (Loss) Attributable to ConocoPhillips $ 260 315 (329) 255 (241) 260 Comprehensive Income (Loss) Attributable to ConocoPhillips $ 580 635 (83) 566 (1,118) 580 Income Statement Three Months Ended June 30, 2019 Revenues and Other Income Sales and other operating revenues $ - 3,487 - 4,466 - 7,953 Equity in earnings of affiliates 1,637 2,088 533 173 (4,258) 173 Gain on dispositions - 10 - 72 - 82 Other income - 44 1 127 - 172 Intercompany revenues - 23 10 1,782 (1,815) - Total Revenues and Other Income 1,637 5,652 544 6,620 (6,073) 8,380 Costs and Expenses Purchased commodities - 3,124 - 946 (1,396) 2,674 Production and operating expenses 1 657 - 1,113 (353) 1,418 Selling, general and administrative expenses 2 83 - 44 - 129 Exploration expenses - 47 - 75 - 122 Depreciation, depletion and amortization - 148 - 1,342 - 1,490 Impairments - - - 1 - 1 Taxes other than income taxes - 33 - 161 - 194 Accretion on discounted liabilities - 4 - 83 - 87 Interest and debt expense 70 143 33 (15) (66) 165 Foreign currency transaction losses - 23 - 5 - 28 Other expenses - 13 - 1 - 14 Total Costs and Expenses 73 4,275 33 3,756 (1,815) 6,322 Income before income taxes 1,564 1,377 511 2,864 (4,258) 2,058 Income tax provision (benefit) (16) (260) (4) 741 - 461 Net income 1,580 1,637 515 2,123 (4,258) 1,597 Less: net income attributable to noncontrolling interests - - - (17) - (17) Net Income Attributable to ConocoPhillips $ 1,580 1,637 515 2,106 (4,258) 1,580 Comprehensive Income Attributable to ConocoPhillips $ 1,667 1,724 623 2,182 (4,529) 1,667 See Notes to Consolidated Financial Statements. Millions of Dollars Six Months Ended June 30, 2020 Income Statement ConocoPhillips ConocoPhillips Company Burlington Resources LLC All Other Subsidiaries Consolidating Adjustments Total Consolidated Revenues and Other Income Sales and other operating revenues $ - 4,232 - 4,675 - 8,907 Equity in earnings (losses) of affiliates (1,366) 351 (730) 309 1,747 311 Gain on dispositions - 16 - 538 - 554 Other income (loss) - (1,083) 1 137 - (945) Intercompany revenues - 69 4 1,138 (1,211) - Total Revenues and Other Income (1,366) 3,585 (725) 6,797 536 8,827 Costs and Expenses Purchased commodities - 3,800 - 1,140 (1,149) 3,791 Production and operating expenses 1 378 1 1,842 (2) 2,220 Selling, general and administrative expenses 5 115 - 38 (5) 153 Exploration expenses - 44 - 241 - 285 Depreciation, depletion and amortization - 307 - 2,262 - 2,569 Impairments - 3 - 516 - 519 Taxes other than income taxes - 71 - 320 - 391 Accretion on discounted liabilities - 7 - 126 - 133 Interest and debt expense 137 205 66 51 (55) 404 Foreign currency transaction gains - (19) - (64) - (83) Other expenses - (7) - (6) - (13) Total Costs and Expenses 143 4,904 67 6,466 (1,211) 10,369 Income (loss) before income taxes (1,509) (1,319) (792) 331 1,747 (1,542) Income tax provision (benefit) (30) 47 (13) (113) - (109) Net income (loss) (1,479) (1,366) (779) 444 1,747 (1,433) Less: net income attributable to noncontrolling interests - - - (46) - (46) Net Income (Loss) Attributable to ConocoPhillips $ (1,479) (1,366) (779) 398 1,747 (1,479) Comprehensive Loss Attributable to ConocoPhillips $ (1,947) (1,834) (1,130) (83) 3,047 (1,947) Income Statement Six Months Ended June 30, 2019 Revenues and Other Income Sales and other operating revenues $ - 7,468 - 9,635 - 17,103 Equity in earnings of affiliates 3,527 3,710 1,006 359 (8,241) 361 Gain on dispositions - 5 - 94 - 99 Other income 1 552 1 320 - 874 Intercompany revenues - 49 23 2,943 (3,015) - Total Revenues and Other Income 3,528 11,784 1,030 13,351 (11,256) 18,437 Costs and Expenses Purchased commodities - 6,621 - 2,250 (2,522) 6,349 Production and operating expenses 1 837 1 2,204 (354) 2,689 Selling, general and administrative expenses 6 212 - 69 (5) 282 Exploration expenses - 94 - 138 - 232 Depreciation, depletion and amortization - 284 - 2,752 - 3,036 Impairments - - - 2 - 2 Taxes other than income taxes - 79 - 390 - 469 Accretion on discounted liabilities - 8 - 165 - 173 Interest and debt expense 139 292 66 35 (134) 398 Foreign currency transaction losses - 29 - 11 - 40 Other expenses - 25 - (3) - 22 Total Costs and Expenses 146 8,481 67 8,013 (3,015) 13,692 Income before income taxes 3,382 3,303 963 5,338 (8,241) 4,745 Income tax provision (benefit) (31) (224) (9) 1,566 - 1,302 Net income 3,413 3,527 972 3,772 (8,241) 3,443 Less: net income attributable to noncontrolling interests - - - (30) - (30) Net Income Attributable to ConocoPhillips $ 3,413 3,527 972 3,742 (8,241) 3,413 Comprehensive Income Attributable to ConocoPhillips $ 3,689 3,803 1,204 3,998 (9,005) 3,689 See Notes to Consolidated Financial Statements.
Schedule of Condensed Balance Sheet	Millions of Dollars June 30, 2020 Balance Sheet ConocoPhillips ConocoPhillips Company Burlington Resources LLC All Other Subsidiaries Consolidating Adjustments Total Consolidated Assets Cash and cash equivalents $ - 1,801 - 1,106 - 2,907 Short-term investments - 3,934 - 51 - 3,985 Accounts and notes receivable 5 850 2 1,944 (1,269) 1,532 Investment in Cenovus Energy - 971 - - - 971 Inventories - 125 - 857 - 982 Prepaid expenses and other current assets 1 209 - 466 - 676 Total Current Assets 6 7,890 2 4,424 (1,269) 11,053 Investments, loans and long-term receivables* 29,249 39,784 10,711 13,457 (84,700) 8,501 Net properties, plants and equipment - 3,561 - 37,559 - 41,120 Other assets 4 730 248 2,087 (697) 2,372 Total Assets $ 29,259 51,965 10,961 57,527 (86,666) 63,046 Liabilities and Stockholders’ Equity Accounts payable $ - 1,394 109 1,846 (1,269) 2,080 Short-term debt (3) 4 14 131 - 146 Accrued income and other taxes - 91 - 221 - 312 Employee benefit obligations - 327 - 95 - 422 Other accruals 85 356 35 669 - 1,145 Total Current Liabilities 82 2,172 158 2,962 (1,269) 4,105 Long-term debt 3,795 6,667 2,123 2,267 - 14,852 Asset retirement obligations and accrued environmental costs - 339 - 5,126 - 5,465 Deferred income taxes - - - 4,598 (697) 3,901 Employee benefit obligations - 1,186 - 400 - 1,586 Other liabilities and deferred credits* 447 5,814 919 8,925 (14,461) 1,644 Total Liabilities 4,324 16,178 3,200 24,278 (16,427) 31,553 Retained earnings 30,793 17,543 1,384 7,680 (20,049) 37,351 Other common stockholders’ equity (5,858) 18,244 6,377 25,569 (50,190) (5,858) Total Liabilities and Stockholders’ Equity $ 29,259 51,965 10,961 57,527 (86,666) 63,046 Includes intercompany loans. Balance Sheet December 31, 2019 Assets Cash and cash equivalents $ - 3,439 - 1,649 - 5,088 Short-term investments - 2,670 - 358 - 3,028 Accounts and notes receivable 5 2,088 2 3,881 (2,575) 3,401 Investment in Cenovus Energy - 2,111 - - - 2,111 Inventories - 168 - 858 - 1,026 Prepaid expenses and other current assets 1 352 - 1,906 - 2,259 Total Current Assets 6 10,828 2 8,652 (2,575) 16,913 Investments, loans and long-term receivables 34,076 44,969 11,662 15,612 (97,413) 8,906 Net properties, plants and equipment - 3,552 - 38,717 - 42,269 Other assets 3 765 253 2,210 (805) 2,426 Total Assets $ 34,085 60,114 11,917 65,191 (100,793) 70,514 Liabilities and Stockholders’ Equity Accounts payable $ - 2,670 21 3,084 (2,575) 3,200 Short-term debt (3) 4 13 91 - 105 Accrued income and other taxes - 79 - 951 - 1,030 Employee benefit obligations - 508 - 155 - 663 Other accruals 84 408 35 1,518 - 2,045 Total Current Liabilities 81 3,669 69 5,799 (2,575) 7,043 Long-term debt 3,794 6,670 2,129 2,197 - 14,790 Asset retirement obligations and accrued environmental costs - 322 - 5,030 - 5,352 Deferred income taxes - - - 5,438 (804) 4,634 Employee benefit obligations - 1,329 - 452 - 1,781 Other liabilities and deferred credits* 1,787 7,514 826 9,271 (17,534) 1,864 Total Liabilities 5,662 19,504 3,024 28,187 (20,913) 35,464 Retained earnings 33,184 21,898 2,164 10,481 (27,985) 39,742 Other common stockholders’ equity (4,761) 18,712 6,729 26,454 (51,895) (4,761) Noncontrolling interests - - - 69 - 69 Total Liabilities and Stockholders’ Equity $ 34,085 60,114 11,917 65,191 (100,793) 70,514 *Includes intercompany loans. See Notes to Consolidated Financial Statements.
Condensed Consolidated Statement of Cash Flows	Millions of Dollars Six Months Ended June 30, 2020 Statement of Cash Flows ConocoPhillips ConocoPhillips Company Burlington Resources LLC All Other Subsidiaries Consolidating Adjustments Total Consolidated Cash Flows From Operating Activities Net Cash Provided by Operating Activities $ 2,115 1,926 36 2,751 (4,566) 2,262 Cash Flows From Investing Activities Capital expenditures and investments - (322) (14) (2,203) 14 (2,525) Working capital changes associated with investing activities - (49) - (202) - (251) Proceeds from asset dispositions 765 1,327 - 1,174 (1,953) 1,313 Sales (purchases) of short-term investments - (1,324) - 294 - (1,030) Long-term advances/loans—related parties - (10) - - 10 - Collection of advances/loans—related parties - 71 - 66 (71) 66 Intercompany cash management (1,339) (269) (22) 1,630 - - Other - - - (35) - (35) Net Cash Provided by (Used in) Investing Activities (574) (576) (36) 724 (2,000) (2,462) Cash Flows From Financing Activities Issuance of debt - - - 10 (10) - Repayment of debt - - - (285) 71 (214) Issuance of company common stock 95 - - - (93) 2 Repurchase of company common stock (726) - - - - (726) Dividends paid (913) (2,990) - (3,200) 6,190 (913) Other 3 - - (439) 408 (28) Net Cash Used in Financing Activities (1,541) (2,990) - (3,914) 6,566 (1,879) Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash - - - (93) - (93) Net Change in Cash, Cash Equivalents and Restricted Cash - (1,640) - (532) - (2,172) Cash, cash equivalents and restricted cash at beginning of period - 3,443 - 1,919 - 5,362 Cash, Cash Equivalents and Restricted Cash at End of Period $ - 1,803 - 1,387 - 3,190 Statement of Cash Flows Six Months Ended June 30, 2019* Cash Flows From Operating Activities Net Cash Provided by (Used in) Operating Activities $ 1,571 5,050 (40) 4,768 (5,564) 5,785 Cash Flows From Investing Activities Capital expenditures and investments - (653) - (2,882) 169 (3,366) Working capital changes associated with investing activities - 41 - (17) - 24 Proceeds from asset dispositions - 217 - 559 (75) 701 Purchases of short-term investments - (50) - (435) - (485) Long-term advances/loans—related parties - (19) - - 19 - Collection of advances/loans—related parties - 69 - 82 (89) 62 Intercompany cash management 1,082 (3,256) 40 2,134 - - Other - 118 - 8 - 126 Net Cash Provided by (Used in) Investing Activities 1,082 (3,533) 40 (551) 24 (2,938) Cash Flows From Financing Activities Issuance of debt - - - 19 (19) - Repayment of debt - (21) - (106) 89 (38) Issuance of company common stock 43 - - - (79) (36) Repurchase of company common stock (2,002) - - - - (2,002) Dividends paid (696) (1,660) - (3,983) 5,643 (696) Other 2 - - 37 (94) (55) Net Cash Used in Financing Activities (2,653) (1,681) - (4,033) 5,540 (2,827) Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash - (1) - 27 - 26 Net Change in Cash, Cash Equivalents and Restricted Cash - (165) - 211 - 46 Cash, cash equivalents and restricted cash at beginning of period - 1,428 - 4,723 - 6,151 Cash, Cash Equivalents and Restricted Cash at End of Period $ - 1,263 - 4,934 - 6,197

Consolidated Statement of Cash Flows - Restricted Cash (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Prepaid Expenses and Other Current Assets [Member]
Restricted Cash	$ 88	$ 90
Other Assets [Member]
Restricted Cash	$ 195	$ 184

Change in Accounting Principles (Details)	6 Months Ended
Change in Accounting Principles (Details)	Jun. 30, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2020
Change in Accounting Principle, Accounting Standards Update, Early Adoption [true false]	false
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true

Inventories (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Inventories [Abstract]
Crude oil and natural gas	$ 452	$ 472
Materials and supplies	530	554
Total Inventories	$ 982	$ 1,026

Inventories Textual (Details) - USD ($) $ in Millions	3 Months Ended
Inventories Textual (Details) - USD ($) $ in Millions	Mar. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Inventories [Abstract]
Lower of cost or market adjustment for crude oil and natural gas inventories	$ 228
LIFO Inventory Amount		$ 352	$ 286

Asset Acquisitions and Dispositions - Textual (Details) - Operating Segments [Member]	1 Months Ended			6 Months Ended		12 Months Ended
	Jul. 31, 2020 USD ($) a	Mar. 31, 2020 USD ($)	Feb. 29, 2020 USD ($)	Jun. 30, 2020 USD ($) MBoe	Jun. 30, 2019 USD ($)	Dec. 31, 2019 MBoe	May 27, 2020 USD ($)
Lower 48 Segment
Long Lived Assets Held For Sale [Line Items]
Natural gas production \| MBoe						15
Canada Segment [Member] \| Scenario Plan [Member] \| Subsequent Event [Member] \| Montney [Member]
Long Lived Assets Held For Sale [Line Items]
Oil and Gas, Undeveloped Acreage, Net \| a	295,000
Noncontrolling Interest, Ownership Percentage by Parent	100.00%
Canada Segment [Member] \| Scenario Plan [Member] \| Subsequent Event [Member] \| Additional Montney acreage [Member]
Long Lived Assets Held For Sale [Line Items]
Payments to Acquire Businesses, Gross	$ 375,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Liabilities	$ 30,000,000
Oil and Gas, Undeveloped Acreage, Net \| a	140,000
Australia West Assets [Member] \| Asia Pacific and Middle East [Member]
Long Lived Assets Held For Sale [Line Items]
Proceeds from asset dispositions				$ 765,000,000
Before-tax gain (loss) on disposition				(587,000,000)
Disposition, Net carrying value							$ 200,000,000
Disposition, Cash							500,000,000
Disposition, PP&E							1,300,000,000
Disposition, Other current assets							100,000,000
Asset Retirement Obligation of held for sale or sold							700,000,000
Disposition, deferred tax liabilities							300,000,000
Disposition, other liabilities							$ 200,000,000
Disposition, Before-tax earnings				$ (265,000,000)	$ (156,000,000)
Natural gas production \| MBoe				35
Segment which includes disposition				Asia Pacific and Middle East
Barossa project [Member] \| Asia Pacific and Middle East [Member] \| Scenario Plan [Member]
Long Lived Assets Held For Sale [Line Items]
Proceeds from asset dispositions				$ 200,000,000
Waddell Ranch [Member] \| Lower 48 Segment
Long Lived Assets Held For Sale [Line Items]
Proceeds from asset dispositions			$ 184,000,000
Before-tax gain (loss) on disposition			$ 0
Segment which includes disposition				Lower 48
Niobrara [Member] \| Lower 48 Segment
Long Lived Assets Held For Sale [Line Items]
Proceeds from asset dispositions		$ 359,000,000
Before-tax gain (loss) on disposition		(38,000,000)
Disposition, Net carrying value		397,000,000
Disposition, PP&E		433,000,000
Asset Retirement Obligation of held for sale or sold		$ 34,000,000
Disposition, Before-tax earnings				$ 24,000,000	$ 5,000,000
Segment which includes disposition				Lower 48

Investments, Loans and Long-Term Receivables - Textual (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	6 Months Ended
	Sep. 30, 2018	Mar. 31, 2019	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2012
Equity method investments
Loan balance with affiliated company			$ 272	$ 339
APLNG [Member]
Equity method investments
Project finance facility, maximum borrowing capacity					$ 8,500
Line Of Credit Facility Value Outstanding			6,500
Book value of equity method investment			$ 6,889
Long Term Debt Refinanced Amount		$ 3,200
Line of Credit Facility, Expiration Date			Mar. 31, 2029
Line of Credit Facility, Frequency of Payments			bi-annual
APLNG [Member] \| Export-Import Bank of the US [Member]
Equity method investments
Project finance facility, maximum borrowing capacity					2,900
APLNG [Member] \| Export-Import Bank of China [Member]
Equity method investments
Project finance facility, maximum borrowing capacity					2,700
Early Repayment of Senior Debt	$ 1,400	1,000
Line of Credit Facility, Expiration Date			Sep. 30, 2030
Line of Credit Facility, Frequency of Payments			bi-annual
APLNG [Member] \| Australian and International Commercial Bank Syndicate [Member]
Equity method investments
Project finance facility, maximum borrowing capacity					$ 2,900
Early Repayment of Senior Debt		2,200
APLNG [Member] \| U S Private Placement Bond [Member]
Equity method investments
Project finance facility, maximum borrowing capacity	$ 1,400	600
Line of Credit Facility, Expiration Date			Sep. 30, 2030
Line of Credit Facility, Frequency of Payments			bi-annual
APLNG [Member] \| Commerical Banks [Member]
Equity method investments
Project finance facility, maximum borrowing capacity		$ 2,600
Line of Credit Facility, Expiration Date			Mar. 31, 2028
Line of Credit Facility, Frequency of Payments			bi-annual
QG3 [Member]
Equity method investments
Loan balance with affiliated company			$ 272

Investment in Cenovus Energy - Textual (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	May 17, 2017
Schedule Of Available For Sale Securities [Line Items]
Investment in Cenovus Energy	$ 971		$ 971		$ 2,111
Unrealized (gain) loss on investment in Cenovus Energy			$ 1,140	$ (373)
Foster Creek Christina Lake (FCCL) [Member]
Schedule Of Available For Sale Securities [Line Items]
Equity Method Investment, Ownership Percentage						50.00%
Cenovus Energy Common Stock [Member]
Schedule Of Available For Sale Securities [Line Items]
Shares Exchange for Assets Held for Sale	208		208			208
Investment Owned, Common Stock, percent of Issued and Outstanding						16.90%
Investment in Cenovus Energy	$ 971		$ 971		$ 2,110	$ 1,960
Unrealized (gain) loss on investment in Cenovus Energy	$ (551)	$ (30)	$ 1,140	$ (373)
Cenovus Energy Common Stock [Member] \| Cenovus Energy Inc [Member]
Schedule Of Available For Sale Securities [Line Items]
Cenovus Energy common share price	$ 4.67		$ 4.67			$ 9.41

Suspended Wells - Textual (Details) $ in Millions	6 Months Ended
Suspended Wells - Textual (Details) $ in Millions	Jun. 30, 2020 USD ($)
Suspended Wells [Abstract]
Capitalized cost of suspended wells	$ 701
Increase (decrease) in capitalized cost of suspended wells	319
Capitalized Exploratory Well Cost, Charged to Dry Hole Expense	$ 19
Number of wells charged to dry hole expense	one

Impairments (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
Impairments (Details) - USD ($) $ in Millions	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Impairments	$ (2)		$ 1	$ 519	$ 2
Lower 48 [Member]
Segment Reporting Information [Line Items]
Impairments	2	$ 511	0	513	0
Europe and North Africa [Member]
Segment Reporting Information [Line Items]
Impairments	$ (4)		$ 1	$ 6	$ 2

Impairments - Textual (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
Impairments - Textual (Details) - USD ($) $ in Millions	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Impairments	$ (2)		$ 1	$ 519	$ 2
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs	97		122	285	232
Lower 48 [Member]
Segment Reporting Information [Line Items]
Impairments	$ 2	$ 511	$ 0	$ 513	$ 0
Asia Pacific and Middle East [Member]
Segment Reporting Information [Line Items]
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs		$ 31

Debt - Textual (Details) - USD ($)	1 Months Ended		6 Months Ended
Debt - Textual (Details) - USD ($)	Apr. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Debt [Abstract]
Debt balance			$ 14,998,000,000	$ 14,895,000,000
Short Term Debt [Line Items]
Commercial Paper Program, Amount Outstanding			$ 196,000,000
Moody's, A3 Rating [Member]
Debt Instrument [Line Items]
Debt Instrument, Credit Rating	In April 2020, Moody’s affirmed their rating of “A3” with a “stable” outlook.
Fitch, A Rating [Member]
Debt Instrument [Line Items]
Debt Instrument, Credit Rating			Our current rating from Fitch is “A” with a “stable” outlook.
Standard & Poor's, A Rating [Member]
Debt Instrument [Line Items]
Debt Instrument, Credit Rating		In March 2020, S&P affirmed its “A” rating on our senior long-term debt and revised its outlook to “negative” from “stable”.
Revolving Credit Facility [Member]
Short Term Debt [Line Items]
Maximum borrowing capactiy under revolving credit facility			$ 6,000,000,000.0
Line of Credit Facility, Expiration Date			May 31, 2023
Remaining borrowing capacity under revolving credit facility			$ 6,000,000,000.0
Commercial Paper Program, Amount Outstanding			0	0
Letter of Credit [Member]
Short Term Debt [Line Items]
Commercial Paper Program, Amount Outstanding			0	0
Letter of Credit [Member] \| Maximum [Member]
Short Term Debt [Line Items]
Commercial Paper Program, Capacity			500,000,000
VRDB [Member]
Debt Instrument [Line Items]
Debt Instrument Face Amount			283,000,000
Conoco Phillips Commercial Paper Program [Member] \| Commercial Paper [Member]
Short Term Debt [Line Items]
Maximum borrowing capactiy under revolving credit facility			6,000,000,000.0
Commercial Paper Program, Amount Outstanding			$ 0	$ 0
Conoco Phillips Commercial Paper Program [Member] \| Commercial Paper [Member] \| Maximum [Member]
Short Term Debt [Line Items]
Maturity period of commercial paper (in days)			P90D

Changes in Equity (Details) - USD ($)
$ in Millions

3 Months Ended

6 Months Ended

Jun. 30, 2020

Jun. 30, 2019

Jun. 30, 2020

Jun. 30, 2019

Increase (Decrease) in Stockholders' Equity [Roll Forward]

$ 31,387

$ 32,981

$ 35,050

$ 32,064

Other Comprehensive Income (Loss), Net of Tax

278

1,597

(1,433)

3,443

320

(468)

276

(455)

(346)

(913)

(696)

Distributions to noncontrolling interests and other

(1,250)

(726)

(2,002)

(6)

(43)

(32)

(60)

Disposition

(84)

Distributed under benefit plans

Change in Accounting Principle

^[1]

(1)

(3)

(6)

Par Value - Common Stock [Member]

31,493

33,074

31,493

33,074

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Capital in excess of par [Member]

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Distributed under benefit plans

47,027

46,877

46,983

46,879

Increase (Decrease) in Stockholders' Equity [Roll Forward]

47,079

46,922

47,079

46,922

Treasury Stock [Member]

(47,130)

(43,656)

(46,405)

(42,905)

(1,250)

(726)

(2,002)

(1)

Accumulated Other Comprehensive Income (Loss) [Member]

(47,130)

(44,906)

(47,130)

(44,906)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Other Comprehensive Income (Loss), Net of Tax

(6,145)

(5,914)

(5,357)

(6,063)

320

(468)

276

Change in Accounting Principle

^[1]

(40)

Retained Earnings [Member]

(5,825)

(5,827)

(5,825)

(5,827)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

37,545

35,534

39,742

34,010

260

1,580

(1,479)

3,413

Change in Accounting Principle

(455)

(346)

(913)

(696)

^[1]

(1)

(2)

Noncontrolling Interest [Member]

37,351

36,769

37,351

36,769

Increase (Decrease) in Stockholders' Equity [Roll Forward]

122

125

Distributions to noncontrolling interests and other

(6)

(43)

(32)

(60)

Disposition

(84)

(2)

(1)

(3)

$ 0

$ 98

$ 0

$ 98

[1]	*Cumulative effect of the adoption of ASU No. 2018-02, "Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income."

Changes in Equity - Parenthetical (Details) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Stockholders' Equity Note [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 0.31	$ 0.42	$ 0.84	$ 0.61

Guarantees - Textual (Details) $ in Millions	6 Months Ended
Guarantees - Textual (Details) $ in Millions	Jun. 30, 2020 USD ($)
Australia Pacific APLNG [Member]
Guarantor Obligations [Line Items]
Ownership percentage in equity investment	37.50%
Finance Reserve Guarantee [Member] \| Australia Pacific APLNG [Member]
Guarantor Obligations [Line Items]
Terms of Guarantees Outstanding	11 years
Maximum potential amount of future payments	$ 170
Guarantor Obligations, Current Carrying Value	$ 14
Guarantee existing sales agreement of natural gas delivery \| Australia Pacific APLNG [Member] \| Maximum [Member]
Guarantor Obligations [Line Items]
Terms of Guarantees Outstanding	1 to 22 years
Max potential future payments-reckless breach [Member] \| Australia Pacific APLNG [Member]
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	$ 1,300
Max potential future payments-prorata share [Member] \| Australia Pacific APLNG [Member]
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	700
Continued development [Member] \| Australia Pacific APLNG [Member]
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	120
Guarantor Obligations, Current Carrying Value	$ 7
Continued development [Member] \| Australia Pacific APLNG [Member] \| Maximum [Member]
Guarantor Obligations [Line Items]
Terms of Guarantees Outstanding	17 to 25 years or the life of the venture
Other Guarantees [Member]
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	$ 780
Guarantor Obligations, Current Carrying Value	$ 11
Other Guarantees [Member] \| Maximum [Member]
Guarantor Obligations [Line Items]
Terms of Guarantees Outstanding	1 to 5 years
Indemnifications [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Current Carrying Value	$ 70
Environmental accruals for known contamination in carrying amount recorded for indemnifications	$ 30

Contingencies and Commitments - Textual (Details) - USD ($) $ in Millions		1 Months Ended				6 Months Ended	23 Months Ended
	Aug. 02, 2019	Jul. 31, 2020	Mar. 31, 2019	Aug. 31, 2018	Apr. 30, 2018	Jun. 30, 2020	Jun. 30, 2020	Dec. 31, 2019	Aug. 29, 2019
Loss Contingencies [Line Items]
Letters of Credit Outstanding, Amount						$ 196	$ 196
Subsequent Event [Member] \| The Louisiana Land and Exploration Company LLC [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount Awarded from Other Party		$ 90
US and Canada [Member] \| Cleanup Remediation Activities [Member]
Loss Contingencies [Line Items]
Total environmental accrual included in balance sheet						$ 171	171	$ 171
Loss Contingency, Settlement Agreement, Terms						P30Y
Venezuela \| ConocoPhillips Versus Petroleos de Venezuela ICISD [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount Awarded from Other Party			$ 8,700
Litigation Award Reduction									$ 227
Litigation Settlement Amount Awarded From Other Party Revised									$ 8,500
Venezuela \| ConocoPhillips vs Petroleos De Venezuela ICC [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount Awarded from Other Party	$ 55			$ 500	$ 2,000
Loss Contingency, Settlement Agreement, Terms						In August 2018, ConocoPhillips entered into a settlement with PDVSA to recover the full amount of this ICC award, plus interest through the payment period, including initial payments totaling approximately $500 million within a period of 90 days from the time of signing of the settlement agreement. The balance of the settlement is to be paid quarterly over a period of four and a half years.
Cash Proceeds from Legal Settlements							$ 754

Derivative and Financial Instruments - Commodity Balance Sheet (Details) - Commodity Contract [Member] - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Commodity derivative assets	$ 316	$ 288
Other assets [Member]
Derivatives, Fair Value [Line Items]
Commodity derivative assets	35	34
Other accruals [Member]
Derivatives, Fair Value [Line Items]
Commodity derivative liabilities	310	283
Other liabilities and deferred credits [Member]
Derivatives, Fair Value [Line Items]
Commodity derivative liabilities	$ 25	$ 28

Derivative and Financial Instruments - Commodity Gain (Loss) (Details) - Commodity Contract [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Sales and other operating revenues [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from commodity derivatives	$ (50)	$ 45	$ (3)	$ 64
Other Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from commodity derivatives	3	2	5	1
Purchased commodities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from commodity derivatives	$ 24	$ (31)	$ (2)	$ (51)

Derivative and Financial Instruments - Commodity Notional (Details) - Short [Member] - Commodity Contract [Member] - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Natural gas and power, Fixed price [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Commodity derivatives - volumetric material net exposures	(20)	(5)
Natural gas and power, Basis [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Commodity derivatives - volumetric material net exposures	(27)	(23)

Derivative and Financial Instruments - FX Balance Sheet (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign currency exchange derivative assets	$ 23	$ 1
Other Accruals [Member]
Derivatives, Fair Value [Line Items]
Foreign currency exchange derivative liabilities	1	20
Other liabilities and deferred credits [Member]
Derivatives, Fair Value [Line Items]
Foreign currency exchange derivative liabilities	$ 0	$ 8

Derivative and Financial Instruments - FX Gain (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Foreign currency transaction gains (losses) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Foreign currency transaction (gains) losses	$ 12	$ 23	$ (62)	$ 21

Derivative and Financial Instruments - FX Notional (Details) £ in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2020 CAD ($) $ / $	Jun. 30, 2019 CAD ($) $ / $	Jun. 30, 2020 CAD ($)	Jun. 30, 2020 GBP (£)	Dec. 31, 2019 CAD ($)	Dec. 31, 2019 GBP (£)
Notional Disclosures [Abstract]
Description of Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Activities			In the second quarter of 2019, we entered into foreign currency exchange contracts to sell CAD 1.35 billion at CAD 0.748 against the USD. In the first quarter of 2020, we entered into forward currency exchange contracts to buy CAD 0.9 billion at CAD 0.718 against the USD
Buy British Pound Sell Euro [Member]
Notional Disclosures [Abstract]
Net notional position of foreign currency exchange derivatives \| £				£ 7		£ 4
Sell Canadian dollar, buy U.S. dollar [Member]
Notional Disclosures [Abstract]
Net notional position of foreign currency exchange derivatives			$ 427		$ 1,337
Sell Canadian dollar, buy U.S. dollar [Member] \| Nondesignated [Member]
Notional Disclosures [Abstract]
Net notional position of foreign currency exchange derivatives		$ 1,350
Derivative, Currency Bought		USD
Derivative, Currency Sold		CAD
Derivative, Forward Exchange Rate \| $ / $		0.748
Buy CAD, Sell USD [Member] \| Nondesignated [Member]
Notional Disclosures [Abstract]
Net notional position of foreign currency exchange derivatives	$ 900
Derivative, Currency Bought	CAD
Derivative, Currency Sold	USD
Derivative, Forward Exchange Rate \| $ / $	0.718

Derivative and Financial Instruments - Financial Instruments at fair value (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Cash and cash equivalents	$ 2,907	$ 5,088
Short-term Investments	3,985	3,028
Investments and long-term receiavables	8,334	8,687
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Cash and cash equivalents	4	99
Short-term Investments	9	191
Investments and long-term receiavables	280	133
Corporate Bonds [Member] \| Remaining maturities within one year [Member] \| Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Cash and cash equivalents	0	1
Short-term Investments	144	59
Investments and long-term receiavables	0	0
Corporate Bonds [Member] \| Remaining Maturities Greater Than One Year Through Five Years [Member] \| Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Cash and cash equivalents	0	0
Short-term Investments	0	0
Investments and long-term receiavables	134	99
Commercial Paper [Member] \| Remaining maturities within one year [Member] \| Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Cash and cash equivalents	4	8
Short-term Investments	126	30
Investments and long-term receiavables	0	0
US Government Debt Securities [Member] \| Remaining maturities within one year [Member] \| Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Cash and cash equivalents	0	0
Short-term Investments	10	10
Investments and long-term receiavables	0	0
US Government Debt Securities [Member] \| Remaining Maturities Greater Than One Year Through Five Years [Member] \| Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Cash and cash equivalents	0	0
Short-term Investments	0	0
Investments and long-term receiavables	16	15
U.S. Government Agency Obligations [Member] \| Remaining Maturities Greater Than One Year Through Five Years [Member] \| Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Cash and cash equivalents	0	0
Short-term Investments	0	0
Investments and long-term receiavables	4	0
Asset-backed Securities [Member] \| Remaining Maturities Greater Than One Year Through Five Years [Member] \| Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Cash and cash equivalents	0	0
Short-term Investments	0	0
Investments and long-term receiavables	$ 37	$ 19

Derivative and Financial Instruments - Cost Basis to Fair Value (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost Basis	$ 472	$ 472	$ 241
Fair Value	475	475	241
Proceeds from sales and redemptions of investments in debt securities classified as available for sale	126	189
Corporate Bonds [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost Basis	276	276	159
Fair Value	278	278	159
Commercial Paper [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost Basis	130	130	38
Fair Value	130	130	38
US Government Debt Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost Basis	25	25	25
Fair Value	26	26	25
U.S. Government Agency Obligations [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost Basis	4	4	0
Fair Value	4	4	0
Asset-backed Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost Basis	37	37	19
Fair Value	$ 37	$ 37	$ 19

Derivative and Financial Instruments - Credit Risk (Details Textual) - USD ($)	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Aggregate fair value of all derivative instruments in a liability position	$ 40,000,000	$ 79,000,000
Collateral was posted for derivative instruments in a liability position	0
In event of downgrade below investment grade [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Additional collateral, either in the form of cash or letters of credit	$ 38,000,000
Financial instruments [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Credit Derivative, Recourse Provisions	Certain of our derivative instruments contain provisions that require us to post collateral if the derivative exposure exceeds a threshold amount. We have contracts with fixed threshold amounts and other contracts with variable threshold amounts that are contingent on our credit rating. The variable threshold amounts typically decline for lower credit ratings, while both the variable and fixed threshold amounts typically revert to zero if we fall below investment grade. Cash is the primary collateral in all contracts; however, many also permit us to post letters of credit as collateral, such as transactions administered through the New York Mercantile Exchange.
Trade receivables [Member] \| Maximum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Terms of financial instruments and trade receivables	30 days

Fair Value Measurement - FV Hierarchy (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in Cenovus Energy	$ 971	$ 2,111
Investments in debt securities	475	241
Commodity derivative asset, gross	351	322
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in Cenovus Energy	971	2,111
Investments in debt securities	475	241
Commodity derivative asset, gross	351	322
Total assets	1,797	2,674
Commodity derivative liability, gross	335	311
Total liabilities	335	311
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in Cenovus Energy	971	2,111
Investments in debt securities	26	25
Commodity derivative asset, gross	207	172
Total assets	1,204	2,308
Commodity derivative liability, gross	216	174
Total liabilities	216	174
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in Cenovus Energy	0	0
Investments in debt securities	449	216
Commodity derivative asset, gross	120	114
Total assets	569	330
Commodity derivative liability, gross	103	115
Total liabilities	103	115
Fair Value, Measurements, Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in Cenovus Energy	0	0
Investments in debt securities	0	0
Commodity derivative asset, gross	24	36
Total assets	24	36
Commodity derivative liability, gross	16	22
Total liabilities	$ 16	$ 22

Fair Value Measurement - FV of Commodity Derivatives (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Offsetting Derivative Assets [Abstract]
Assets - gross amounts recognized	$ 351	$ 322
Assets - amounts without right of setoff	1	3
Assets - gross amounts	350	319
Assets - gross amounts offset	233	193
Assets - net amounts presented	117	126
Assets - cash collateral	8	4
Assets - net amounts	109	122
Offsetting Derivative Liabilities [Abstract]
Liabilities - gross amounts recognized	335	311
Liabilities - amounts without right of setoff	2	4
Liabilities - gross amounts recognized	333	307
Liabilities - gross amounts offset	233	193
Liabilities - net amounts presented	100	114
Liabilities - cash collateral	22	12
Liabilities - net amounts	$ 78	$ 102

Fair Value Measurement - Nonrecurring (Details) - Fair Value Measurements Nonrecurring [Member] $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
Fair Value, Disclosure Item Amounts [Domain]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 77
Before-Tax Loss - Cost and Equity method investments	510
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Disclosure Item Amounts [Domain]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 77

Fair Value Measurement - Range and arithmetic average of significant unobservable inputs (Details) - Wind River Basin [Member] - Fair Value, Inputs, Level 3 [Member] - Fair Value Measurements Nonrecurring [Member] - Lower 48 [Member] $ in Millions		1 Months Ended	6 Months Ended
	Jan. 01, 2035	Mar. 31, 2020 USD ($) $ / MMBTU MMcf	Jun. 30, 2020
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Nonrecurring, Measurement Period			During the first quarter of 2020
Fair Value Measurements, Valuation Processes, Description			The carrying value was written down to fair value. The fair value was estimated based on an internal discounted cash flow model using estimates of future production, an outlook of future prices using a combination of exchanges (short-term) and external pricing services companies (long-term), future operating costs and capital expenditures, and a discount rate believed to be consistent with those used by principal market participants.
Assets, Fair Value Disclosure \| $		$ 77
Valuation Technique, Discounted Cash Flow [Member] \| Minimum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Natural gas production \| MMcf		8.4
Valuation Technique, Discounted Cash Flow [Member] \| Maximum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Natural gas production \| MMcf		55.2
Valuation Technique, Discounted Cash Flow [Member] \| Arithmetic Average [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Natural gas production \| MMcf		22.9
Measurement Input, Commodity Future Price [Member] \| Forecast [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Future prices annual increase (decrease), percentage	220.00%
Measurement Input, Commodity Future Price [Member] \| Minimum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Natural gas price outlook \| $ / MMBTU		2.67
Measurement Input, Commodity Future Price [Member] \| Maximum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Natural gas price outlook \| $ / MMBTU		9.17
Measurement Input, Commodity Future Price [Member] \| Arithmetic Average [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Natural gas price outlook \| $ / MMBTU		5.68
Measurement Input, Discount Rate [Member] \| Minimum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount Rate		7.90%
Measurement Input, Discount Rate [Member] \| Maximum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount Rate		9.10%
Measurement Input, Discount Rate [Member] \| Arithmetic Average [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount Rate		8.30%

Fair Value Measurement - FV of Financial Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Carrying Amount [Member]
Financial Assets [Abstract]
Investment in Cenovus Energy	$ 971	$ 2,111
Investments in debt securities	475	241
Total loans and advances - related parties	272	339
Financial Liabilities [Abstract]
Total debt, excluding capital leases	14,156	14,175
Carrying Amount [Member] \| Commodity Contract [Member]
Financial Assets [Abstract]
Commodity derivatives, assets	110	125
Financial Liabilities [Abstract]
Commodity derivatives, liability	80	106
Investment in Cenovus Energy	971	2,111
Investments in debt securities	475	241
Total loans and advances - related parties	272	339
Total debt, excluding capital leases	18,307	18,108
Commodity Contract [Member]
Financial Assets [Abstract]
Commodity derivatives, assets	110	125
Financial Liabilities [Abstract]
Commodity derivatives, liability	$ 80	$ 106

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Defined Benefit Plans, Beginning Balance			$ (350)
Defined Benefit Plans	$ (7)	$ (17)	(18)	$ (30)
Defined Benefit Plans, Ending Balance	(332)		(332)
Net Unrealized Gain on Securities, Beginning Balance			0
Net Unrealized Loss on Securities			2
Net Unrealized Gain on Securities, Ending Balance	2		2
Foreign Currency Translation, Beginning Balance			(5,007)
Foreign Currency Translation	309	70	(488)	246
Foreign Currency Translation, Ending Balance	(5,495)		(5,495)
Accumulated Other Comprehensive Income, Beginning Balance			(5,357)
Other Comprehensive Income (Loss), Net of Tax	320	$ 87	(468)	$ 276
Accumulated Other Comprehensive Income, Ending Balance	$ (5,825)		$ (5,825)

- Definition

Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

+ References + Details

Accumulated Other Comprehensive Income (Loss) - Reclassifications (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Defined Benefit Plans	$ 8	$ 17	$ 16	$ 30
Tax expense of defined benefit plans	$ 2	$ 5	$ 4	$ 10

Cash Flow Information (Details) - USD ($) $ in Millions	6 Months Ended
Cash Flow Information (Details) - USD ($) $ in Millions	Jun. 30, 2020	Jun. 30, 2019
Cash Payments
Interest	$ 397	$ 414
Income taxes	761	1,572
Net Sales (Purchases) of Investments
Short-term investments purchased	(7,021)	(982)
Short-term investments sold	6,147	497
Investments and Long-term receivables purchased	(208)	0
Investments and Long-term receivables sold	52	0
Net Sales (Purchases) of Investments	$ (1,030)	$ (485)

Employee Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Pension Plans Defined Benefit [Member] \| U.S.
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	$ 21	$ 19	$ 42	$ 39
Interest cost	17	21	34	42
Expected return on plan assets	(21)	(18)	(42)	(36)
Amortization of prior service cost (credit)	0	0	0	0
Recognized net actuarial (gain) loss	13	13	25	26
Settlements	0	11	1	17
Net periodic benefit cost	30	46	60	88
Pension Plans Defined Benefit [Member] \| Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	13	18	27	37
Interest cost	20	26	42	52
Expected return on plan assets	(34)	(35)	(71)	(70)
Amortization of prior service cost (credit)	0	(1)	0	(1)
Recognized net actuarial (gain) loss	5	8	11	16
Settlements	0	0	(1)	0
Net periodic benefit cost	4	16	8	34
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	0	0	1	0
Interest cost	1	3	3	5
Expected return on plan assets	0	0	0	0
Amortization of prior service cost (credit)	(8)	(9)	(16)	(17)
Recognized net actuarial (gain) loss	0	0	0	(1)
Settlements	0	0	0	0
Net periodic benefit cost	$ (7)	$ (6)	$ (12)	$ (13)

Employee Benefit Plans - Textual (Details) $ in Millions	6 Months Ended
Employee Benefit Plans - Textual (Details) $ in Millions	Jun. 30, 2020 USD ($)
U.S.
Employee Benefit Plans (Textual) [Abstract]
Company contributions	$ 49
Expected company contributions	130
Int'l (Pension Benefits) [Member]
Employee Benefit Plans (Textual) [Abstract]
Company contributions	44
Expected company contributions	$ 60

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Significant transactions with related parties
Related Party Revenue	$ 21	$ 26	$ 38	$ 47
Related Party Purchases	0	17	0	38
Operating expenses and selling, general and administrative expenses	12	14	27	28
Net interest income	$ (2)	$ (3)	$ (4)	$ (7)

Sales and Other Operating Revenue - Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue from contracts with customers	$ 2,749	$ 7,953	$ 8,907	$ 17,103
Revenue, Performance Obligation, Description of Payment Terms			The payments are not directly related to our performance under the contract and are recorded as deferred revenue to be recognized as revenue when the customer can utilize and benefit from their right to use the license.
Customers within the scope of ASC Topic 606 [Member]
Revenue from contracts with customers	1,919	6,633	$ 6,830	13,692
Physical gas contracts [Member]
Revenue from contracts with customers	856	1,371	2,152	3,452
Crude oil product line [Member]
Revenue from contracts with customers	26	165	118	353
Natural Gas Product Line [Member]
Revenue from contracts with customers	763	1,095	1,853	2,863
Other Products [Member]
Revenue from contracts with customers	67	111	181	236
Financial Derivative Contracts [Member]
Revenue from contracts with customers	(26)	(51)	(75)	(41)
Lower 48 Segment \| Physical gas contracts [Member]
Revenue from contracts with customers	698	1,111	1,674	2,724
Canada Segment [Member] \| Physical gas contracts [Member]
Revenue from contracts with customers	121	100	300	341
Europe and North Africa Segment [Member] \| Physical gas contracts [Member]
Revenue from contracts with customers	$ 37	$ 160	$ 178	$ 387

Sales and Other Operating Revenue - Practical Expedients (Details)	6 Months Ended
	Jun. 30, 2020
Revenue, Practical Expedient [Abstract]
Revenue, Practical Expedient, Remaining Performance Obligation, Description	We have long-term commodity sales contracts which use prevailing market prices at the time of delivery, and under these contracts, the market-based variable consideration for each performance obligation (i.e., delivery of commodity) is allocated to each wholly unsatisfied performance obligation within the contract.
Practical Expedient	true
Revenue, Performance Obligation, Description of Timing	We typically receive payment within 30 days or less (depending on the terms of the invoice) once delivery is made.

Sales and Other Operating Revenue - Receivables and Contract Liabilities (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Accounts Receivable, Net	$ 745,000,000	$ 745,000,000	$ 2,372,000,000
Revenue, Performance Obligation, Description of Timing		We typically receive payment within 30 days or less (depending on the terms of the invoice) once delivery is made.
Contract with Customer, Timing of Satisfaction of Performance Obligation and Payment		Payments are received in installments over the construction period.
Revenue, Performance Obligation, Description of Payment Terms		The payments are not directly related to our performance under the contract and are recorded as deferred revenue to be recognized as revenue when the customer can utilize and benefit from their right to use the license.
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Explanation		We expect to recognize the contract liabilities as of June 30, 2020, as revenue during 2021 and 2022.
Total Contract Liabilities	80,000,000	$ 80,000,000	$ 80,000,000
Contract with Customer, Liability, Revenue Recognized	0	0
Short-term Contract with Customer [Member]
Total Contract Liabilities	47,000,000	47,000,000
Long-term Contract with Customer [Member]
Total Contract Liabilities	$ 33,000,000	$ 33,000,000

Segment Disclosures and Related Information - Sales (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Sales and other operating revenues	$ 2,749	$ 7,953	$ 8,907	$ 17,103
Natural Gas [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	1,190	1,915	2,845	4,918
Natural Gas Liquids Reserves [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	84	213	235	451
Crude Oil [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	1,216	4,813	4,660	9,394
Other Products [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	259	1,012	1,167	2,340
U.S.
Segment Reporting Information [Line Items]
Sales and other operating revenues	1,844	5,225	6,061	10,911
Australia
Segment Reporting Information [Line Items]
Sales and other operating revenues	168	311	605	870
Canada
Segment Reporting Information [Line Items]
Sales and other operating revenues	165	382	498	955
China
Segment Reporting Information [Line Items]
Sales and other operating revenues	67	159	213	402
Indonesia
Segment Reporting Information [Line Items]
Sales and other operating revenues	132	226	336	431
Libya
Segment Reporting Information [Line Items]
Sales and other operating revenues	0	267	44	521
Malaysia
Segment Reporting Information [Line Items]
Sales and other operating revenues	83	334	299	670
Norway
Segment Reporting Information [Line Items]
Sales and other operating revenues	242	561	688	1,149
United Kingdom
Segment Reporting Information [Line Items]
Sales and other operating revenues	46	485	156	1,189
Other foreign Countries
Segment Reporting Information [Line Items]
Sales and other operating revenues	2	3	7	5
Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	2,749	7,953	8,907	17,103
Alaska [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	419	1,426	1,532	2,833
Alaska [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	438	1,426	1,551	2,833
Alaska [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	19	0	19	0
Lower 48 [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	1,433	3,809	4,536	7,962
Lower 48 [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	1,405	3,798	4,498	7,939
Lower 48 [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	(28)	(11)	(38)	(23)
Canada
Segment Reporting Information [Line Items]
Sales and other operating revenues	165	717	678	1,540
Canada \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	165	382	498	955
Canada \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	0	(335)	(180)	(585)
Europe and North Africa [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	288	1,313	888	2,859
Asia Pacific and Middle East [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	450	1,030	1,453	2,373
Other International [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	1	0	4	0
Corporate and Other [Member] \| Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	$ 2	$ 4	$ 15	$ 144

Segment Disclosures and Related Information - Net Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	$ 260	$ 1,580	$ (1,479)	$ 3,413
Assets [Abstract]
Assets	63,046		63,046		$ 70,514
Alaska [Member] \| Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	(141)	462	(60)	846
Assets [Abstract]
Assets	16,121		16,121		15,453
Lower 48 [Member] \| Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	(365)	206	(802)	399
Assets [Abstract]
Assets	12,158		12,158		14,425
Canada [Member] \| Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	(86)	100	(195)	222
Assets [Abstract]
Assets	5,909		5,909		6,350
Europe and North Africa [Member] \| Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	11	407	86	614
Assets [Abstract]
Assets	7,204		7,204		8,121
Asia Pacific and Middle East [Member] \| Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	662	517	1,060	1,042
Assets [Abstract]
Assets	12,404		12,404		14,716
Other International [Member] \| Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	(6)	81	22	212
Assets [Abstract]
Assets	299		299		285
Corporate and Other [Member] \| Corporate, Non-Segment [Member]
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	185	$ (193)	(1,590)	$ 78
Assets [Abstract]
Assets	$ 8,951		$ 8,951		$ 11,164

Segment Disclosures - Textual (Details)	6 Months Ended
Segment Disclosures - Textual (Details)	Jun. 30, 2020
Segment Disclosures and Related Information [Abstract]
Number of Operating Segments	6

Segment Disclosures and Related Information - Assets (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Assets [Abstract]
Consolidated total assets	$ 63,046	$ 70,514

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Examination [Line Items]
Income (Loss) before income taxes	$ 21	$ 2,058	$ (1,542)	$ 4,745
Income Tax Expense (Benefit)	257	(461)	109	$ (1,302)
Reversal of deferred tax assets	(120)
Refund from the Alberta Tax & Revenue Administration	48		$ 48
Effective tax rate			7.00%	27.00%
Decrease to our accrued income and other taxes liability	124
Adjustment to valuation allowances	$ 117	85	$ (229)	$ 191
Australia West Assets [Member] \| Operating Segments [Member] \| Asia Pacific and Middle East [Member]
Income Tax Examination [Line Items]
Before-tax gain (loss) on disposition			587
Income Tax Expense (Benefit)			10
Reversal of deferred tax assets			$ 92
U.K. Subsidiaries [Member]
Income Tax Examination [Line Items]
Income Tax Expense (Benefit)		$ 234

Supplementary Information - Condensed Consolidating Financial Information (Details) - USD ($) $ in Billions	1 Months Ended
	May 31, 2020	Jun. 30, 2020
ConocoPhillips [Member]
Condensed Financial Statements, Captions [Line Items]
Proceeds from Contributions from Affiliates	$ 2.2
Proceeds from Contributed Capital	0.8
ConocoPhillips Company [Member]
Condensed Financial Statements, Captions [Line Items]
Proceeds from Contributions from Affiliates	2.4
Proceeds from Contributed Capital	$ 0.8
ConocoPhillips Company [Member] \| ConocoPhillips [Member]
Condensed Financial Statements, Captions [Line Items]
Ownership Percentage by Parent		100.00%
Burlington Resources LLC [Member] \| ConocoPhillips Company [Member]
Condensed Financial Statements, Captions [Line Items]
Ownership Percentage by Parent		100.00%

Supplementary Information - Condensed Consolidating Financial Information - Income Statement (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues and Other Income
Sales and other operating revenues	$ 2,749	$ 7,953	$ 8,907	$ 17,103
Equity in earnings (losses) of affiliates	77	173	311	361
Gain on Dispositions	596	82	554	99
Other income (loss)	594	172	(945)	874
Intercompany revenues	0	0	0	0
Total Revenues and Other Income	4,016	8,380	8,827	18,437
Costs and Expenses
Purchased commodities	1,130	2,674	3,791	6,349
Production and operating expenses	1,047	1,418	2,220	2,689
Selling, general and administrative expenses	156	129	153	282
Exploration expenses	97	122	285	232
Depreciation, depletion and amortization	1,158	1,490	2,569	3,036
Impairments	(2)	1	519	2
Taxes other than Income Taxes	141	194	391	469
Accretion on discounted liabilities	66	87	133	173
Interest and debt expense	202	165	404	398
Foreign currency transaction (gain) loss	7	28	(83)	40
Other Expense	(7)	14	(13)	22
Total Costs and Expenses	3,995	6,322	10,369	13,692
Income (loss) before income taxes	21	2,058	(1,542)	4,745
Income tax provision (benefit)	(257)	461	(109)	1,302
Net income (loss)	278	1,597	(1,433)	3,443
Less: net income attributable to noncontrolling interests	(18)	(17)	(46)	(30)
Net Income (Loss)	260	1,580	(1,479)	3,413
Comprehensive Income (Loss) Attributable to ConocoPhillips	580	1,667	(1,947)	3,689
ConocoPhillips [Member]
Revenues and Other Income
Sales and other operating revenues	0	0	0	0
Equity in earnings (losses) of affiliates	315	1,637	(1,366)	3,527
Gain on Dispositions	0	0	0	0
Other income (loss)	1	0	0	1
Intercompany revenues	0	0	0	0
Total Revenues and Other Income	316	1,637	(1,366)	3,528
Costs and Expenses
Purchased commodities	0	0	0	0
Production and operating expenses	1	1	1	1
Selling, general and administrative expenses	3	2	5	6
Exploration expenses	0	0	0	0
Depreciation, depletion and amortization	0	0	0	0
Impairments	0	0	0	0
Taxes other than Income Taxes	0	0	0	0
Accretion on discounted liabilities	0	0	0	0
Interest and debt expense	67	70	137	139
Foreign currency transaction (gain) loss	0	0	0	0
Other Expense	0	0	0	0
Total Costs and Expenses	71	73	143	146
Income (loss) before income taxes	245	1,564	(1,509)	3,382
Income tax provision (benefit)	(15)	(16)	(30)	(31)
Net income (loss)	260	1,580	(1,479)	3,413
Less: net income attributable to noncontrolling interests	0	0	0	0
Net Income (Loss)	260	1,580	(1,479)	3,413
Comprehensive Income (Loss) Attributable to ConocoPhillips	580	1,667	(1,947)	3,689
Consolidating Adjustments [Member]
Revenues and Other Income
Sales and other operating revenues	0	0	0	0
Equity in earnings (losses) of affiliates	(241)	(4,258)	1,747	(8,241)
Gain on Dispositions	0	0	0	0
Other income (loss)	0	0	0	0
Intercompany revenues	(271)	(1,815)	(1,211)	(3,015)
Total Revenues and Other Income	(512)	(6,073)	536	(11,256)
Costs and Expenses
Purchased commodities	(252)	(1,396)	(1,149)	(2,522)
Production and operating expenses	(1)	(353)	(2)	(354)
Selling, general and administrative expenses	0	0	(5)	(5)
Exploration expenses	0	0	0	0
Depreciation, depletion and amortization	0	0	0	0
Impairments	0	0	0	0
Taxes other than Income Taxes	0	0	0	0
Accretion on discounted liabilities	0	0	0	0
Interest and debt expense	(18)	(66)	(55)	(134)
Foreign currency transaction (gain) loss	0	0	0	0
Other Expense	0	0	0	0
Total Costs and Expenses	(271)	(1,815)	(1,211)	(3,015)
Income (loss) before income taxes	(241)	(4,258)	1,747	(8,241)
Income tax provision (benefit)	0	0	0	0
Net income (loss)	(241)	(4,258)	1,747	(8,241)
Less: net income attributable to noncontrolling interests	0	0	0	0
Net Income (Loss)	(241)	(4,258)	1,747	(8,241)
Comprehensive Income (Loss) Attributable to ConocoPhillips	(1,118)	(4,529)	3,047	(9,005)
Reportable Legal Entities [Member] \| ConocoPhillips Company [Member]
Revenues and Other Income
Sales and other operating revenues	1,329	3,487	4,232	7,468
Equity in earnings (losses) of affiliates	231	2,088	351	3,710
Gain on Dispositions	7	10	16	5
Other income (loss)	563	44	(1,083)	552
Intercompany revenues	39	23	69	49
Total Revenues and Other Income	2,169	5,652	3,585	11,784
Costs and Expenses
Purchased commodities	1,188	3,124	3,800	6,621
Production and operating expenses	218	657	378	837
Selling, general and administrative expenses	138	83	115	212
Exploration expenses	19	47	44	94
Depreciation, depletion and amortization	160	148	307	284
Impairments	1	0	3	0
Taxes other than Income Taxes	23	33	71	79
Accretion on discounted liabilities	3	4	7	8
Interest and debt expense	98	143	205	292
Foreign currency transaction (gain) loss	(18)	23	(19)	29
Other Expense	(1)	13	(7)	25
Total Costs and Expenses	1,829	4,275	4,904	8,481
Income (loss) before income taxes	340	1,377	(1,319)	3,303
Income tax provision (benefit)	25	(260)	47	(224)
Net income (loss)	315	1,637	(1,366)	3,527
Less: net income attributable to noncontrolling interests	0	0	0	0
Net Income (Loss)	315	1,637	(1,366)	3,527
Comprehensive Income (Loss) Attributable to ConocoPhillips	635	1,724	(1,834)	3,803
Reportable Legal Entities [Member] \| Burlington Resources LLC [Member]
Revenues and Other Income
Sales and other operating revenues	0	0	0	0
Equity in earnings (losses) of affiliates	(304)	533	(730)	1,006
Gain on Dispositions	0	0	0	0
Other income (loss)	0	1	1	1
Intercompany revenues	1	10	4	23
Total Revenues and Other Income	(303)	544	(725)	1,030
Costs and Expenses
Purchased commodities	0	0	0	0
Production and operating expenses	0	0	1	1
Selling, general and administrative expenses	0	0	0	0
Exploration expenses	0	0	0	0
Depreciation, depletion and amortization	0	0	0	0
Impairments	0	0	0	0
Taxes other than Income Taxes	0	0	0	0
Accretion on discounted liabilities	0	0	0	0
Interest and debt expense	33	33	66	66
Foreign currency transaction (gain) loss	0	0	0	0
Other Expense	0	0	0	0
Total Costs and Expenses	33	33	67	67
Income (loss) before income taxes	(336)	511	(792)	963
Income tax provision (benefit)	(7)	(4)	(13)	(9)
Net income (loss)	(329)	515	(779)	972
Less: net income attributable to noncontrolling interests	0	0	0	0
Net Income (Loss)	(329)	515	(779)	972
Comprehensive Income (Loss) Attributable to ConocoPhillips	(83)	623	(1,130)	1,204
Reportable Legal Entities [Member] \| All Other Subsidiaries [Member]
Revenues and Other Income
Sales and other operating revenues	1,420	4,466	4,675	9,635
Equity in earnings (losses) of affiliates	76	173	309	359
Gain on Dispositions	589	72	538	94
Other income (loss)	30	127	137	320
Intercompany revenues	231	1,782	1,138	2,943
Total Revenues and Other Income	2,346	6,620	6,797	13,351
Costs and Expenses
Purchased commodities	194	946	1,140	2,250
Production and operating expenses	829	1,113	1,842	2,204
Selling, general and administrative expenses	15	44	38	69
Exploration expenses	78	75	241	138
Depreciation, depletion and amortization	998	1,342	2,262	2,752
Impairments	(3)	1	516	2
Taxes other than Income Taxes	118	161	320	390
Accretion on discounted liabilities	63	83	126	165
Interest and debt expense	22	(15)	51	35
Foreign currency transaction (gain) loss	25	5	(64)	11
Other Expense	(6)	1	(6)	(3)
Total Costs and Expenses	2,333	3,756	6,466	8,013
Income (loss) before income taxes	13	2,864	331	5,338
Income tax provision (benefit)	(260)	741	(113)	1,566
Net income (loss)	273	2,123	444	3,772
Less: net income attributable to noncontrolling interests	(18)	(17)	(46)	(30)
Net Income (Loss)	255	2,106	398	3,742
Comprehensive Income (Loss) Attributable to ConocoPhillips	$ 566	$ 2,182	$ (83)	$ 3,998

Supplementary Information - Condensed Consolidating Financial Information - Balance Sheet (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 2,907	$ 5,088
Short-term investments	3,985	3,028
Accounts and notes receivable	1,532	3,401
Investment in Cenovus Energy	971	2,111
Inventories	982	1,026
Prepaid expenses and other current assets	676	2,259
Total Current Assets	11,053	16,913
Investments and long-term receiavables	8,501	8,906
Net properties, plants and equipment	41,120	42,269
Other assets	2,372	2,426
Total Assets	63,046	70,514
Liabilities and Stockholders' Equity
Accounts payable	2,080	3,200
Short-term debt	146	105
Accrued income and other taxes	312	1,030
Employee benefit obligations	422	663
Other accruals	1,145	2,045
Total Current Liabilities	4,105	7,043
Long-term debt	14,852	14,790
Asset retirement obligations and accrued environmental costs	5,465	5,352
Deferred income taxes	3,901	4,634
Employee benefit obligations	1,586	1,781
Other liabilities and deferred credits	1,644	1,864
Total Liabilities	31,553	35,464
Retained earnings	37,351	39,742
Other common stockholders' equity	(5,858)	(4,761)
Noncontrolling interests	0	69
Total Liabilities and Stockholders' Equity	63,046	70,514
ConocoPhillips [Member]
Assets
Cash and cash equivalents	0	0
Short-term investments	0	0
Accounts and notes receivable	5	5
Investment in Cenovus Energy	0	0
Inventories	0	0
Prepaid expenses and other current assets	1	1
Total Current Assets	6	6
Investments and long-term receiavables	29,249	34,076
Net properties, plants and equipment	0	0
Other assets	4	3
Total Assets	29,259	34,085
Liabilities and Stockholders' Equity
Accounts payable	0	0
Short-term debt	(3)	(3)
Accrued income and other taxes	0	0
Employee benefit obligations	0	0
Other accruals	85	84
Total Current Liabilities	82	81
Long-term debt	3,795	3,794
Asset retirement obligations and accrued environmental costs	0	0
Deferred income taxes	0	0
Employee benefit obligations	0	0
Other liabilities and deferred credits	447	1,787
Total Liabilities	4,324	5,662
Retained earnings	30,793	33,184
Other common stockholders' equity	(5,858)	(4,761)
Noncontrolling interests		0
Total Liabilities and Stockholders' Equity	29,259	34,085
Consolidating Adjustments [Member]
Assets
Cash and cash equivalents	0	0
Short-term investments	0	0
Accounts and notes receivable	(1,269)	(2,575)
Investment in Cenovus Energy	0	0
Inventories	0	0
Prepaid expenses and other current assets	0	0
Total Current Assets	(1,269)	(2,575)
Investments and long-term receiavables	(84,700)	(97,413)
Net properties, plants and equipment	0	0
Other assets	(697)	(805)
Total Assets	(86,666)	(100,793)
Liabilities and Stockholders' Equity
Accounts payable	(1,269)	(2,575)
Short-term debt	0	0
Accrued income and other taxes	0	0
Employee benefit obligations	0	0
Other accruals	0	0
Total Current Liabilities	(1,269)	(2,575)
Long-term debt	0	0
Asset retirement obligations and accrued environmental costs	0	0
Deferred income taxes	(697)	(804)
Employee benefit obligations	0	0
Other liabilities and deferred credits	(14,461)	(17,534)
Total Liabilities	(16,427)	(20,913)
Retained earnings	(20,049)	(27,985)
Other common stockholders' equity	(50,190)	(51,895)
Noncontrolling interests		0
Total Liabilities and Stockholders' Equity	(86,666)	(100,793)
Reportable Legal Entities [Member] \| ConocoPhillips Company [Member]
Assets
Cash and cash equivalents	1,801	3,439
Short-term investments	3,934	2,670
Accounts and notes receivable	850	2,088
Investment in Cenovus Energy	971	2,111
Inventories	125	168
Prepaid expenses and other current assets	209	352
Total Current Assets	7,890	10,828
Investments and long-term receiavables	39,784	44,969
Net properties, plants and equipment	3,561	3,552
Other assets	730	765
Total Assets	51,965	60,114
Liabilities and Stockholders' Equity
Accounts payable	1,394	2,670
Short-term debt	4	4
Accrued income and other taxes	91	79
Employee benefit obligations	327	508
Other accruals	356	408
Total Current Liabilities	2,172	3,669
Long-term debt	6,667	6,670
Asset retirement obligations and accrued environmental costs	339	322
Deferred income taxes	0	0
Employee benefit obligations	1,186	1,329
Other liabilities and deferred credits	5,814	7,514
Total Liabilities	16,178	19,504
Retained earnings	17,543	21,898
Other common stockholders' equity	18,244	18,712
Noncontrolling interests		0
Total Liabilities and Stockholders' Equity	51,965	60,114
Reportable Legal Entities [Member] \| Burlington Resources LLC [Member]
Assets
Cash and cash equivalents	0	0
Short-term investments	0	0
Accounts and notes receivable	2	2
Investment in Cenovus Energy	0	0
Inventories	0	0
Prepaid expenses and other current assets	0	0
Total Current Assets	2	2
Investments and long-term receiavables	10,711	11,662
Net properties, plants and equipment	0	0
Other assets	248	253
Total Assets	10,961	11,917
Liabilities and Stockholders' Equity
Accounts payable	109	21
Short-term debt	14	13
Accrued income and other taxes	0	0
Employee benefit obligations	0	0
Other accruals	35	35
Total Current Liabilities	158	69
Long-term debt	2,123	2,129
Asset retirement obligations and accrued environmental costs	0	0
Deferred income taxes	0	0
Employee benefit obligations	0	0
Other liabilities and deferred credits	919	826
Total Liabilities	3,200	3,024
Retained earnings	1,384	2,164
Other common stockholders' equity	6,377	6,729
Noncontrolling interests		0
Total Liabilities and Stockholders' Equity	10,961	11,917
Reportable Legal Entities [Member] \| All Other Subsidiaries [Member]
Assets
Cash and cash equivalents	1,106	1,649
Short-term investments	51	358
Accounts and notes receivable	1,944	3,881
Investment in Cenovus Energy	0	0
Inventories	857	858
Prepaid expenses and other current assets	466	1,906
Total Current Assets	4,424	8,652
Investments and long-term receiavables	13,457	15,612
Net properties, plants and equipment	37,559	38,717
Other assets	2,087	2,210
Total Assets	57,527	65,191
Liabilities and Stockholders' Equity
Accounts payable	1,846	3,084
Short-term debt	131	91
Accrued income and other taxes	221	951
Employee benefit obligations	95	155
Other accruals	669	1,518
Total Current Liabilities	2,962	5,799
Long-term debt	2,267	2,197
Asset retirement obligations and accrued environmental costs	5,126	5,030
Deferred income taxes	4,598	5,438
Employee benefit obligations	400	452
Other liabilities and deferred credits	8,925	9,271
Total Liabilities	24,278	28,187
Retained earnings	7,680	10,481
Other common stockholders' equity	25,569	26,454
Noncontrolling interests		69
Total Liabilities and Stockholders' Equity	$ 57,527	$ 65,191

Supplementary Information - Condensed Consolidating Financial Information - Cash Flow (Details) - USD ($)
$ in Millions

6 Months Ended

Jun. 30, 2020

Jun. 30, 2019

Net cash provided by (used in) operating activities

$ 2,262

$ 5,785

(2,525)

(3,366)

(251)

1,313

701

(1,030)

(485)

(35)

126

(2,462)

(2,938)

(214)

(38)

(36)

(726)

(2,002)

(913)

(696)

Net Cash Provided by (Used in) Financing Activities

(28)

(55)

(1,879)

(2,827)

Effect of Exchange Rate Changes on Cash and Cash Equivalents and Restricted Cash

(93)

Net Change in Cash and Cash Equivalents and Restricted Cash

(2,172)

Cash and Cash Equivalents and Restricted Cash at beginning of period

5,362

^[1]

6,151

Cash and Cash Equivalents and Restricted Cash at end of period

3,190

^[2]

6,197

ConocoPhillips [Member]

Net cash provided by (used in) operating activities

2,115

1,571

765

(1,339)

1,082

(574)

1,082

(726)

(2,002)

(913)

(696)

Net Cash Provided by (Used in) Financing Activities

(1,541)

(2,653)

Effect of Exchange Rate Changes on Cash and Cash Equivalents and Restricted Cash

Net Change in Cash and Cash Equivalents and Restricted Cash

Cash and Cash Equivalents and Restricted Cash at beginning of period

Cash and Cash Equivalents and Restricted Cash at end of period

Reportable Legal Entities [Member] | ConocoPhillips Company [Member]

Net cash provided by (used in) operating activities

1,926

5,050

(322)

(653)

(49)

1,327

217

(1,324)

(50)

(10)

(19)

(269)

(3,256)

118

(576)

(3,533)

(21)

(2,990)

(1,660)

Net Cash Provided by (Used in) Financing Activities

(2,990)

(1,681)

Effect of Exchange Rate Changes on Cash and Cash Equivalents and Restricted Cash

(1)

Net Change in Cash and Cash Equivalents and Restricted Cash

(1,640)

(165)

Cash and Cash Equivalents and Restricted Cash at beginning of period

3,443

1,428

Cash and Cash Equivalents and Restricted Cash at end of period

1,803

1,263

Reportable Legal Entities [Member] | Burlington Resources LLC [Member]

Net cash provided by (used in) operating activities

(40)

(14)

(22)

(36)

Net Cash Provided by (Used in) Financing Activities

Effect of Exchange Rate Changes on Cash and Cash Equivalents and Restricted Cash

Net Change in Cash and Cash Equivalents and Restricted Cash

Cash and Cash Equivalents and Restricted Cash at beginning of period

Cash and Cash Equivalents and Restricted Cash at end of period

Reportable Legal Entities [Member] | All Other Subsidiaries [Member]

Net cash provided by (used in) operating activities

2,751

4,768

(2,203)

(2,882)

(202)

(17)

1,174

559

294

(435)

1,630

2,134

(35)

724

(551)

(285)

(106)

(3,200)

(3,983)

Net Cash Provided by (Used in) Financing Activities

(439)

(3,914)

(4,033)

Effect of Exchange Rate Changes on Cash and Cash Equivalents and Restricted Cash

(93)

Net Change in Cash and Cash Equivalents and Restricted Cash

(532)

211

Cash and Cash Equivalents and Restricted Cash at beginning of period

1,919

4,723

Cash and Cash Equivalents and Restricted Cash at end of period

1,387

4,934

Consolidating Adjustments [Member]

Net cash provided by (used in) operating activities

(4,566)

(5,564)

169

(1,953)

(75)

(71)

(89)

(2,000)

(10)

(19)

(93)

(79)

6,190

5,643