Fair Value Measurement	12 Months Ended
Fair Value Measurement	Dec. 31, 2021
Fair Value Measurement [Abstract]
Fair Value Measurement	Note 13—Fair Value Measurement We carry a portion of our assets and liabilities at fair value that are 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 fair value hierarchy. The classification 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 2021 or 2020. Recurring Fair Value Measurement Financial assets and liabilities reported at fair value on a recurring basis primarily include our investment in CVE common shares, our investment s 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 CVE, 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, U.S. government agency obligations and foreign government 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 December 31, 2021 December 31, 2020 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Investment in Cenovus Energy $ 1,117 - - 1,117 1,256 - - 1,256 Investments in debt securities 2 477 - 479 17 501 - 518 Commodity derivatives 562 619 62 1,243 142 101 12 255 Total assets $ 1,681 1,096 62 2,839 1,415 602 12 2,029 Liabilities Commodity derivatives $ 593 543 87 1,223 120 91 9 220 Total liabilities $ 593 543 87 1,223 120 91 9 220 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 December 31, 2021 Assets $ 1,243 85 1,158 650 508 - 508 Liabilities 1,223 82 1,141 650 491 36 455 December 31, 2020 Assets $ 255 2 253 157 96 10 86 Liabilities 220 1 219 157 62 4 58 At December 31, 2021 and December 31, 2020, 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 Measurements Using Fair Value Level 1 Inputs Level 2 Inputs Level 3 Inputs Before-Tax Loss Year ended December 31, 2021 Net PP&E (held for use) December 31, 2021 $ 472 - - 472 80 Equity Method Investments December 31, 2021 5,574 - 5,574 - 688 Year ended December 31, 2020 Net PP&E (held for use) March 31, 2020 $ 65 - - 65 522 December 31, 2020 268 - - 268 287 Net PP&E (held for use) During 2021 and 2020, the estimated fair value of certain noncore assets included in our Lower 48 segment declined to amounts below the carrying values. The carrying values were written down to fair value. The fair values were estimated based on internal discounted cash flow models using the following estimated assumptions: estimated future production, an outlook of future prices from a combination of exchanges (short-term) coupled with pricing service companies and our internal outlook (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 measurements for significant assets were as follows: Fair Value (Millions of Dollars) Valuation Technique Unobservable Inputs Range (Arithmetic Average) December 31, 2021 Lower 48 Gulf Coast and Rockies noncore field $ 472 Discounted cash flow Commodity production (MBOED) 0.2 - 17 ( 5.4 ) Commodity price outlook* ($/BOE) $ 41.45 - $ 93.68 ($ 64.39 ) Discount rate** 7.3 % - 9.7 % ( 8.7 %) Commodity price outlook based on a combination of external pricing service companies' and our internal outlook for years 2024-2050; future prices escalated at 2.0 % annually after year 2050. Determined as the weighted average cost of capital of a group of peer companies, adjusted for risks where appropriate. Fair Value (Millions of Dollars) Valuation Technique Unobservable Inputs Range (Arithmetic Average) March 31, 2020 Wind River Basin $ 65 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 a combination of 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. Fair Value (Millions of Dollars) Valuation Technique Unobservable Inputs Range (Arithmetic Average) December 31, 2020 Central Basin Platform $ 244 Discounted cash flow Commodity production (MBOED) 0.5 - 12.7 ( 3.4 ) Commodity price outlook ($/BOE) $ 37.35 - $ 115.29 ($ 73.80 ) Discount rate** 6.8 % - 7.7 % ( 7.4 %) Commodity price outlook based on a combination of external pricing service companies' and our internal outlook for years 2023-2050; future prices escalated at 2.0 % annually after year 2050. *Determined as the weighted average cost of capital of a group of peer companies, adjusted for risks where appropriate. Equity Method Investments During the fourth quarter of 2021, Origin Energy Limited agreed to the sale of 10 percent of their interest in APLNG for $ 1.645 billion, before customary adjustments. ConocoPhillips announced in December 2021 that we were exercising our preemption right under the APLNG Shareholders Agreement to purchase an additional 10 percent shareholding interest in APLNG, subject to government approvals. The sales price associated with this preemption right was determined to reflect a relevant observable market participant view of APLNG’s fair value which was below the carrying value of our existing investment in APLNG. As such, our investment in APLNG was written down to its fair value of $ 5,574 million, resulting in a before-tax charge of $ 688 million. See Note 4 and Note 7 . 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 5 for a discussion of the carrying value and fair value of our investment in CVE 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 corroborate d with market data. See Note 12 . ● 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 4 . ● 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. ● Commercial paper: The carrying amount of our commercial paper instruments approximates fair value and is reported on the balance sheet as short-term debt 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 2021 2020 2021 2020 Financial assets Investment in CVE common shares $ 1,117 1,256 1,117 1,256 Commodity derivatives 593 88 593 88 Investments in debt securities 479 518 479 518 Loans and advances—related parties 114 220 114 220 Financial liabilities Total debt, excluding finance leases 18,673 14,478 22,451 19,106 Commodity derivatives 537 59 537 59 Commodity Derivatives At December 31, 2021, commodity derivative assets and liabilities are presented net with no obligation to return cash collateral and $ 36 million of rights to reclaim cash collateral, respectively. At December 31, 2020, commodity derivative assets and liabilities are presented net with $ 10 million in obligations to return cash collateral and $ 4 million of rights to reclaim cash collateral, respectively.

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.