ConocoPhillips (COP) 10-Q 4 Nov 21 2021 Q3 Quarterly report Financial data

Cover

Cover	9 Months Ended
	Sep. 30, 2021shares
Cover [Abstract]
Entity Central Index Key	0001163165
Amendment Flag	false
Entity File Number	001-32395
Entity Registrant Name	ConocoPhillips
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Incorporation State or Country Code	DE
Entity Tax Identification Number	01-0562944
Entity Address, Address Line One	925 N. Eldridge Parkway
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77079
City Area Code	281
Local Phone Number	293-1000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	1,318,946,867
Common Stock, $.01 Par Value [Member]
Entity Listings [Line Items]
Title of 12(b) Security	Common Stock, $.01 Par Value
Trading Symbol	COP
Security Exchange Name	NYSE
7% Debentures due 2029 [Member]
Entity Listings [Line Items]
Title of 12(b) Security	7% Debentures due 2029
Trading Symbol	CUSIP—718507BK1
Security Exchange Name	NYSE

Consolidated Income Statement

Consolidated Income Statement - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues and Other Income
Sales and other operating revenues	$ 11,326	$ 4,386	$ 30,708	$ 13,293
Equity in earnings of affiliates	239	35	500	346
Gain (loss) on dispositions	2	(3)	294	551
Other income (loss)	49	(38)	884	(983)
Total Revenues and Other Income	11,616	4,380	32,386	13,207
Costs and Expenses
Purchased commodities	4,179	1,839	11,660	5,630
Production and operating expenses	1,389	963	4,151	3,183
Selling, general and administrative expenses	128	96	556	249
Exploration expenses	65	125	206	410
Depreciation, depletion and amortization	1,672	1,411	5,425	3,980
Impairments	(89)	2	(90)	521
Taxes other than income taxes	403	179	1,154	570
Accretion on discounted liabilities	61	62	186	195
Interest and debt expense	219	200	665	604
Foreign currency transaction (gain) loss	(10)	(5)	19	(88)
Other expenses	17	20	78	7
Total Costs and Expenses	8,034	4,892	24,010	15,261
Income (loss) before income taxes	3,582	(512)	8,376	(2,054)
Income tax provision (benefit)	1,203	(62)	2,924	(171)
Net income (loss)	2,379	(450)	5,452	(1,883)
Less: net loss attributable to noncontrolling interests	0	0	0	(46)
Net Income (Loss) Attributable to ConocoPhillips	$ 2,379	$ (450)	$ 5,452	$ (1,929)
Net Income (Loss) Attributable to ConocoPhillips Per Share of Common Stock (dollars)
Basic	$ 1.78	$ (0.42)	$ 4.10	$ (1.79)
Diluted	$ 1.78	$ (0.42)	$ 4.09	$ (1.79)
Average Common Shares Outstanding (in thousands)
Basic	1,332,286	1,077,377	1,327,216	1,079,525
Diluted	1,336,379	1,077,377	1,330,652	1,079,525

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Consolidated Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 2,379	$ (450)	$ 5,452	$ (1,883)
Defined benefit plans
Reclassification adjustment for amortization of prior service credit included in net income (loss)	(9)	(8)	(28)	(24)
Net actuarial gain (loss) arising during the period	8	(78)	113	(73)
Reclassification adjustment for amortization of net actuarial losses included in net income (loss)	45	45	133	81
Income taxes on defined benefit plans	(9)	10	(49)	3
Defined benefit plans, net of tax	35	(31)	169	(13)
Unrealized holding gain (loss) on securities	0	0	(1)	3
Income taxes on unrealized holding gain on securities	0	0	0	(1)
Unrealized holding gain (loss) on securities, net of tax	0	0	(1)	2
Foreign currency translation adjustments	(237)	188	(72)	(302)
Income taxes on foreign currency translation adjustments	(1)	2	(1)	4
Foreign currency translation adjustments, net of tax	(238)	190	(73)	(298)
Other Comprehensive Income (Loss), Net of Tax	(203)	159	95	(309)
Comprehensive Income (Loss)	2,176	(291)	5,547	(2,192)
Less: comprehensive income attributable to noncontrolling interests	0	0	0	(46)
Comprehensive Income (Loss) Attributable to ConocoPhillips	$ 2,176	$ (291)	$ 5,547	$ (2,238)

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 9,833	$ 2,991
Short-term investments	678	3,609
Accounts and notes receivable (net of allowance of $2 and $4, respectively)	5,336	2,634
Accounts and notes receivable-related parties	129	120
Investment in Cenovus Energy	1,416	1,256
Inventories	1,043	1,002
Prepaid expenses and other current assets	1,746	454
Total Current Assets	20,181	12,066
Investments and long-term receivables	8,058	8,017
Loans and advances-related parties	0	114
Net properties, plants and equipment (net of accumulated DD&A of $65,223 and $62,213, respectively)	56,689	39,893
Other assets	2,376	2,528
Total Assets	87,304	62,618
Liabilities
Accounts payable	4,101	2,669
Accounts payable-related parties	30	29
Short-term debt	920	619
Accrued income and other taxes	2,082	320
Employee benefit obligations	691	608
Other accruals	2,625	1,121
Total Current Liabilities	10,449	5,366
Long-term debt	18,748	14,750
Asset retirement obligations and accrued environmental costs	5,721	5,430
Deferred income taxes	5,630	3,747
Employee benefit obligations	1,162	1,697
Other liabilities and deferred credits	1,479	1,779
Total Liabilities	43,189	32,769
Equity
Common stock (2,500,000,000 shares authorized at $0.01 par value) Issued (2021-2,089,046,718 shares; 2020-1,798,844,267 shares) Par value	21	18
Capital in excess of par	60,431	47,133
Treasury stock (at cost: 2021-770,099,851 shares; 2020-730,802,089 shares)	(49,521)	(47,297)
Accumulated other comprehensive loss	(5,123)	(5,218)
Retained earnings	38,307	35,213
Total Equity	44,115	29,849
Total Liabilities and Equity	$ 87,304	$ 62,618

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Consolidated Balance Sheet [Abstract]
Allowance for accounts and notes receivable	$ 2	$ 4
Accumulated depreciation, depletion and amortization	$ 65,223	$ 62,213
Common stock, shares authorized	2,500,000,000	2,500,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares issued	2,089,046,718	1,798,844,267
Treasury stock, shares	770,099,851	730,802,089

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Cash Flows From Operating Activities
Net Income (Loss)	$ 2,379	$ (450)	$ 5,452	$ (1,883)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation, depletion and amortization	1,672	1,411	5,425	3,980
Impairments	(89)	2	(90)	521
Dry hole costs and leasehold impairments			7	114
Accretion on discounted liabilities	61	62	186	195
Deferred taxes			895	(428)
Undistributed equity earnings			258	450
Gain on dispositions	(2)	3	(294)	(551)
(Gain) loss on investment in Cenovus Energy			(743)	1,302
Other			(866)	(188)
Working capital adjustments
Decrease (increase) in accounts and notes receivable			(1,619)	1,132
Increase in inventories			(13)	(74)
Increase in prepaid expenses and other current assets			(800)	(49)
Increase (decrease) in accounts payable			682	(583)
Increase (decrease) in taxes and other accruals			2,648	(808)
Net Cash Provided by Operating Activities			11,128	3,130
Cash Flows From Investing Activities
Cash acquired from Concho			382	0
Capital expenditures and investments			(3,767)	(3,657)
Working capital changes associated with investing activities			79	(229)
Proceeds from asset dispositions			792	1,312
Net sales (purchases) of investments			2,846	(1,089)
Collection of advances/loans-related parties			105	116
Other			(386)	(31)
Net Cash Provided by (Used in) Investing Activities			51	(3,578)
Cash Flows From Financing Activities
Issuance of debt			0	300
Repayment of debt			(363)	(234)
Issuance of company common stock			27	(2)
Repurchase of company common stock			(2,224)	(726)
Dividends paid			(1,750)	(1,367)
Other			6	(27)
Net Cash Used in Financing Activities			(4,304)	(2,056)
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash			(3)	(62)
Net Change in Cash, Cash Equivalents and Restricted Cash			6,872	(2,566)
Cash, cash equivalents and restricted cash at beginning of period			3,315	5,362	$ 5,362
Cash, Cash Equivalents and Restricted Cash at End of Period	$ 10,187	$ 2,796	$ 10,187	$ 2,796	$ 3,315

Consolidated Statement of Cas_2

Consolidated Statement of Cash Flows - Restricted Cash	9 Months Ended
	Sep. 30, 2021
Consolidated Statement of Cash Flows [Abstract]
Consolidated Statement of Cash Flows - Restricted Cash	Restricted cash of $ 95 259 respectively, of our Consolidated Balance Sheet as of September 30, 2021. Restricted cash of $ 94 230 respectively, of our Consolidated Balance Sheet as of December 31, 2020. See Notes to Consolidated Financial Statements.

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2021
Basis of Presentation [Abstract]
Basis of Presentation	Note 1—Basis of Presentation The interim-period financial information and, in the opinion of management, includes all known accruals and of the consolidated financial position of ConocoPhillips All such adjustments are of a normal and recurring information have been condensed Therefore, these financial statements notes included in our 2020 Annual Report on Form

Inventories

Inventories	9 Months Ended
	Sep. 30, 2021
Inventories [Abstract]
Inventories	Note 2—Inventories Millions of Dollars September 30 2021 2020 Crude oil and natural gas $ 485 461 Materials and supplies 558 541 Total $ 1,043 1,002 Inventories valued on $ 305 282

Acquisitions and Dispositions

Acquisitions and Dispositions	9 Months Ended
	Sep. 30, 2021
Acquisitions and Dispositions [Abstract]
Acquisitions and Dispositions	Note 3—Acquisitions and Dispositions Announced Acquisition of Shell Permian Assets In September 2021, we signed a definitive agreement Basin in an all-cash transaction for $ 9.5 to be acquired include approximately 225,000 as over 600 close in the fourth quarter of 2021, subject to regulatory the terms of the agreement, we paid a deposit of $ 475 Investing Activities - Other” on our consolidated statement Acquisition of Concho Resources Inc. We completed our acquisition January 15, 2021 agreement, each share of Concho common stock 1.46 for total consideration 13.1 Total Consideration 194,243 1,599 Number of shares exchanged 195,842 1.46 285,929 $ 45.9025 $ 13,125 **Based on the ConocoPhillips average stock The transaction was accounted which requires assets acquired and value measurements were made be made in subsequent periods, up to one year facts and circumstances that using a discounted cash flow approach assumptions; production profiles; and, operating acquisition was valued based on observable accounts payable, and most their short-term nature. 13.1 liabilities based on their fair values as of January 15, 2021. Assets Acquired Millions of Dollars Cash and cash equivalents $ 382 Accounts receivable, net 745 Inventories 45 Prepaid expenses and other current 37 Investments and long-term receivables 333 Net properties, plants and equipment 18,968 Other assets 62 Total assets $ 20,572 Liabilities Assumed Accounts payable $ 638 Accrued income and other taxes 49 Employee benefit obligations 4 Other accruals 510 Long-term debt 4,696 Asset retirement obligations 310 Deferred income taxes 1,123 Other liabilities and deferred credits 117 Total liabilities $ 7,447 Net assets acquired $ 13,125 With the completion of the Concho transaction, $ 11.8 6.9 We recognized approximately 157 quarter of 2021. based awards for certain Concho In the first quarter of 2021, we commenced combining the operations of the two companies nine-month periods ending September 30, 2021, we recognized $ 52 209 costs. The impact from these transaction and restructuring the nine-month period ending September 30, 2021, are Millions of Dollars Transaction Restructuring Cost Total Production and operating expenses $ 110 110 Selling, general and administration 135 64 199 Exploration expenses 18 4 22 Taxes 4 2 6 Other expenses - 29 29 $ 157 209 366 On February 8, 2021, we completed a debt of the debt exchange, we recognized 75 From the acquisition date through (Loss) Attributable to ConocoPhillips” 4,499 million and $ 1,600 include a before- and after-tax 305 233 contracts. statement. The following summarizes the unaudited acquisition of Concho on January 1, 2020: Millions of Dollars Supplemental Pro Forma (unaudited) Three Months Ended September 30, 2020 Nine Months Ended September 30, 2020 Total $ 5,019 16,384 Net loss (565) (1,184) Net loss attributable to ConocoPhillips (565) (1,230) $ per share Earnings per share: Three Months Ended September 30, 2020 Nine Months Ended September 30, 2020 Basic net loss $ (0.41) (0.90) Diluted net loss (0.41) (0.90) The unaudited supplemental pro forma necessarily indicative of the operating January 1, 2020, nor is it necessarily indicative of future pro forma financial information combining the consolidated income statement do not include transaction-related forma results include adjustments 10.5 1.9 gas properties and goodwill, respectively, 2020. resulting from the purchase price allocated assumptions are reasonable, and the relative Assets Sold In 2020, we completed the sale of our Australia $ 200 2021, FID was announced and as such, we recognized 200 The purchaser failed to pay the purchaser to enforce our contractual 200 operations related to In the third quarter of 2021, we sold our interests approximately $ 150 $ 26 15 months ended September 30, 2021. recognizing a before-tax 179 our Other International segment. For the three- and nine-months ended September 121 $ 222 disposition on our consolidated income statement No

Investments, Loans and Long-Ter

Investments, Loans and Long-Term Receivables	9 Months Ended
	Sep. 30, 2021
Investments, Loans and Long-Term Receivables [Abstract]
Investments, Loans and Long-Term Receivables	Note 4—Investments, Australia Pacific LNG Pty Ltd APLNG executed project financing 8.5 drawn from the facility. this facility was composed of a financing agreement commercial bank facility and two and interest repayme September 30, 2021, a balance of $ 5.7 During the fourth quarter of 2020, the estimated below carrying value, primarily due to the weakening review of the facts and circumstances other than temporary under the guidance of FASB Ventures.” relative to the Australian increased and is above carrying value at On October 25, 2021, Origin Energy Limited agreed 10 approximately $ 1.6 preemption rights in favor monitor and evaluate the relationship from this announced transaction. At September 30, 2021, the carrying value 6.4 balance is included in the “Investments and Loans As part of our normal ongoing business operations, agreements with other parties to pursue certain affiliated and non-affiliated included $ 114 the “Accounts

Investment in Cenovus Energy

Investment in Cenovus Energy	9 Months Ended
	Sep. 30, 2021
Investment In Cenovus Energy [Abstract]
Investment in Cenovus Energy	Note 5—Investment in Cenovus Our investment in Cenovus Energy 1.4 billion based on the closing price of $ 10.06 September 30, 2021 and December 31, 2020, we held 141 208 respectively. 7 common stock. During the third quarter, 47 404 Since we began disposing of our CVE shares 67 584 million, of which $ 569 intend to continue to decrease All gains and losses are recognized related to the sale of our CVE shares are consolidated statement for information related . Millions of Dollars Three Months Ended Nine Months Ended September 30 September 30 2021 2020 2021 2020 Total $ 17 (162) 743 (1,302) Less: Net gain (loss) on equity securities sold during (50) - 177 - Unrealized gain (loss) on equity securities $ 67 (162) 566 (1,302)

Impairments

Impairments	9 Months Ended
	Sep. 30, 2021
Impairments [Abstract]
Impairments	Note 6—Impairments During the three- impairment charges within the following Millions of Dollars Nine Months Ended September 30 September 30 2021 2020 2021 2020 Alaska $ - - 3 - Lower 48 (89) 1 (93) 514 Europe, Middle East and North Africa - 1 - 7 $ (89) 2 (90) 521 In the three-month period ended September 30, 2021, 89 Lower 48 segment due to a decreased ARO liability. In the first quarter of 2020, we recorded 511 in the Lower 48 segment which were written

Debt

Debt	9 Months Ended
	Sep. 30, 2021
Debt [Abstract]
Debt	Note 7—Debt Our debt balance at September 30, 2021, was 19.7 15.4 On January 15, 2021, we completed the acquisition of Concho assumed Concho’s publicly 3.9 at fair value of $ 4.7 ● 3.75 % Notes due 2027 1,000 ● 4.3 % Notes due 2028 1,000 ● 2.4 % Notes due 2031 500 ● 4.875 % Notes due 2047 800 ● 4.85 % Notes due 2048 600 The adjustment to fair value of the senior 0.8 amortized as an adjustment to interest In the first quarter of 2021, we completed approximately $ 3.9 98 percent, or approximately 3.8 the same interest rates $ 67 treated as a debt modification for adjustment of the Concho senior notes allocated of the exchange. Company. We have a revolving 6.0 May 2023 . facility may be used for direct 500 support for our commercial paper program. institutions and does not contain any of specified financial ratios or credit ratings. the failure to pay principal or 200 of its consolidated subsidiaries. date. Credit facility borrowings may London interbank market or designated banks in the U.S. The facility agreement also contains cease to be a majority of the Board of Directors. The revolving credit facility supports 6.0 is generally limited to maturities of 90 days sheet. With no commercial paper outstanding no 6.0 billion in available borrowing capacity 2020, we had $ 300 no Following our September 20, 2021, announcement agencies reviewed their pre-announcement ● Fitch affirmed its rating of our long-term debt as “A” with a “stable” outlook. ● S&P affirmed its rating of our long-term debt of “A-” with a “stable” outlook. ● Moody’s affirmed its rating of our senior long-term debt of “A3” and upgraded the outlook to “positive” from “stable.” We do not have any thereby impact our access to liquidity, from their current levels, it could commercial paper markets. commercial paper market, we At September 30, 2021, we had $ 283 maturities ranging through 2035. day. VRDBs are included in the “Long-term debt” line on our consolidated

Changes in Equity

Changes in Equity	9 Months Ended
	Sep. 30, 2021
Changes in Equity [Abstract]
Changes in Equity	Note 8—Changes in Equity Millions of Dollars Attributable to ConocoPhillips Common Stock Par Value Capital in Excess of Par Treasury Stock Accum. Other Comprehensive Income (Loss) Retained Earnings Non- Controlling Interests Total For the three months ended September 30, 2021 Balances at June 30, 2021 $ 21 60,337 (48,278) (4,920) 37,116 44,276 Net income 2,379 2,379 Other comprehensive income (203) (203) Dividends paid ($ 0.43 (579) (579) Dividends payable ($ 0.46 (609) (609) Repurchase of company common stock (1,243) (1,243) Distributed under benefit plans 94 94 Balances at September 30, 2021 $ 21 60,431 (49,521) (5,123) 38,307 - 44,115 For the nine months ended September 30, 2021 Balances at December 31, 2020 $ 18 47,133 (47,297) (5,218) 35,213 29,849 Net income 5,452 5,452 Other comprehensive income 95 95 Dividends paid ($ 1.29 (1,750) (1,750) Dividends payable ($ 0.46 (609) (609) Acquisition of Concho 3 13,122 13,125 Repurchase of company common stock (2,224) (2,224) Distributed under benefit plans 176 176 Other 1 1 Balances at September 30, 2021 $ 21 60,431 (49,521) (5,123) 38,307 - 44,115 Millions of Dollars Attributable to ConocoPhillips Common Stock Par Value Capital in Excess of Par Treasury Stock Accum. Other Comprehensive Income (Loss) Retained Earnings Non- Controlling Interests Total For the three months ended September 30, 2020 Balances at June 30, 2020 $ 18 47,079 (47,130) (5,825) 37,351 31,493 Net income (450) (450) Other comprehensive income 159 159 Dividends paid ($ 0.42 (454) (454) Distributed under benefit plans 34 34 Other 1 1 Balances at September 30, 2020 $ 18 47,113 (47,130) (5,666) 36,448 - 30,783 For the nine months ended September 30, 2020 Balances at December 31, 2019 $ 18 46,983 (46,405) (5,357) 39,742 69 35,050 Net income (1,929) 46 (1,883) Other comprehensive loss (309) (309) Dividends paid ($ 1.26 (1,367) (1,367) Repurchase of company common stock (726) (726) Distributions to noncontrolling interests and other (32) (32) Dispositions (84) (84) Distributed under benefit plans 130 130 Other 1 2 1 4 Balances at September 30, 2020 $ 18 47,113 (47,130) (5,666) 36,448 - 30,783

Guarantees

Guarantees	9 Months Ended
	Sep. 30, 2021
Guarantees [Abstract]
Guarantees	Note 9—Guarantees At September 30, 2021, we were as described below. newly issued or modified guarantees. recognized a liability because the are not currently performing with any either immaterial or have only a remote APLNG Guarantees At September 30, 2021, we had outstanding 37.5 interest in APLNG. exchange rates: ● During the third quarter of 2016, we issued a guarantee of the funds in a project finance reserve account. 9 years . 170 if an enforcement action is commenced by 2021, the carrying value of this guarantee 14 ● In conjunction with our original purchase of an ownership October 2008, we agreed to reimburse arising under guarantees of an existing agreements with remaining terms of 1 to 21 years . cost of volume delivery, 670 1.2 intentional or reckless breach) and agreements and the obligations the payments, or cost of volume delivery, gas to meet these sales commitments into APLNG. ● We have guaranteed connection with the project’s continued 15 to 24 years guarantees is approximately 180 September 30, 2021, the carrying value of these guarantees 11 Other Guarantees We have other guarantees 720 which consist primarily of guarantees value of corporate aircrafts, These guarantees have remaining one to five years lower than guaranteed amounts guaranteed entities, or as a result 30, 2021, the carrying value of these guarantees 11 Indemnifications Over the years, we have entered and assets that gave rise to lease commitments and environmental generally indefinite and the maximum recorded for these indemnification 30 indemnification liability over the relevant and circumstances surrounding each type will reverse the liability when we have an appropriate time period as the fair possible future payments may exceed possible to make a reasonable estimate for additional information about environmental .

Contingencies and Commitments

Contingencies and Commitments	9 Months Ended
	Sep. 30, 2021
Contingencies and Commitments [Abstract]
Contingencies and Commitments	Note 10—Contingencies and Commitments A number of lawsuits involving a variety ConocoPhillips. storage, disposal or release of sites. all known contingencies (other than those related and the amount is reasonably estimable. the range is a better estimate these liabilities for potential insurance third-party recoveries when applicable. probability-weighted loss accrual Based on currently available information, liability exposures will exceed consolidated financial statements. with respect to accrued liabilities and other potential include contingent liabilities recorded environmental remediation costs, the unknown time and extent of such liability in proportion to that of other responsible are subject to change as events and litigation processes. Environmental We are subject to international, environmental liabilities based on facts, existing technology, business considerations. remediation of contaminated other organizations. accrue them in the period they are both probable and Although liability of those potentially responsible several for federal particular site. site at which we have been designated sharing cleanup costs with other financially sound responsible are still under investigation potentially responsible normally assess the remediation. that other potentially responsible parties may this inability in estimating our potential liability, acquisitions in the past, we assumed certain environmental are mitigated by indemnifications dollar limits and time limits. We are currently participating comparable state and costs, we make accruals on an which we record on a discounted probable future costs will be incurred accruals for possible insurance recoveries At September 30, 2021, our balance sheet included 191 $ 180 substantial amount of these expenditures 30 years . environmental assessments, Litigation and Other Contingencies We are subject to various severance tax payments, climate change, personal injury, royalty and tax underpayments environmental contamination ourselves vigorously in these matters. Our legal organization of our cases, employing a litigation management Our process facilitates the process also enables us to track those cases professional judgment and experience current developments in all our cases, and determines if adjustment of existing We have contingent associated with financing arrangements. company with additional funds through In addition, at September 30, 2021, we had performance $ 281 supplies, commercial activities and services incident to In 2007, ConocoPhillips was unable to reach the Venezuelan government’s Venezuela, S.A. (PDVSA), and Hamaca heavy oil ventures and ConocoPhillips initiated international ICSID arbitration tribunal held that Venezuela June 2007. March 2019, the Tribunal unan $ 8.7 Venezuela in 2007. by approximately $ 227 8.5 sought annulment of the award, the ICSID annulment committee lifted the been suspended as a result of Venezuela’s In 2014, ConocoPhillips filed a separate under the contracts that had established April 2018, finding that PDVSA owed ConocoPhillips 2 with the expropriation of the projects 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. and ConocoPhillips agreed to suspend PDVSA ConocoPhillips has resumed legal enforcement 766 million in connection with the ICC award. enforcement thereof meet all sanctions imposed by the U.S. against In 2016, ConocoPhillips filed a separate under the contracts that had established ConocoPhillips approximately 33 recognition and enforcement related to the award meet sanctions imposed by the U.S. against The Office of Natural Resources federal lands and has issued multiple orders and the ONRR entered into a settlement associated appeals have been withdrawn Beginning in 2017, cities, counties, governments against oil and gas companies, abate alleged climate change impacts. amounts claimed by plaintiffs are unprecedented. vehicle to address the challenges associated Several Louisiana parishes and the State 43 Coastal Resources Management compensatory damages for contamination and gas operations. 22 them. scope and damages) and we continue to In October 2020, the Bureau of Safety Continental Shelf (OCS) Lease P-0166, offshore platforms located sent after the current owner of OCS Lease P-0166 facilities. company of ConocoPhillips, which held a historical 25 but sold its interest approximately 30 years On May 10, 2021, ConocoPhillips filed arbitration (SIAC) against Santos KOTN 200 upon FID of the Barossa development project Santos Limited have filed a counterclaim,

Derivative and Financial Instru

Derivative and Financial Instruments	9 Months Ended
	Sep. 30, 2021
Derivative and Financial Instruments [Abstract]
Derivative and Financial Instruments	Note 11—Derivative and Financial Instruments We use futures, forwards, opportunities and manage foreign exchange Commodity Derivative Instruments Our commodity business primarily consists of natural Commodity derivative instruments have the right of setoff, on our consolidated statement recognized either on a gross and losses related to contracts settlement. apply hedge accounting for our commodity The following table presents the gross items where they appear on our consolidated Millions of Dollars September 30 December 31 2021 2020 Assets Prepaid expenses and other current $ 1,601 229 Other assets 109 26 Liabilities Other accruals 1,681 202 Other liabilities and deferred credits 94 18 The gains (losses) from commodity derivatives income statement were: Millions of Dollars Nine Months Ended September 30 September 30 2021 2020 2021 2020 Sales and other operating revenues $ (483) 33 (862) 30 Other income (loss) 7 (2) 23 3 Purchased commodities 405 (27) 550 (29) On January 15, 2021, we assumed financial derivative instruments connection with the acquisition of Concho. were recognized at fair 456 December 31, 2022. 173 contracts with settlement dates 132 remaining Concho derivative contracts $ 305 operating revenues” line on our By the end of March 2021, all oil and natural contractually settled. 692 quarter of 2021 and $ 69 contracts are presented flows. The table below summarizes our material contracts: Open Position Long/(Short) September 30 December 31 2021 2020 Commodity Natural gas and power (billions 10 (20) (19) (10) Financial Instruments We invest in financial currency pools we manage. ● Time deposits: Interest bearing deposits time. ● Demand deposits: Interest bearing deposits withdrawn without notice. ● Commercial paper: Unsecured promissory agency purchased at a discount to ● U.S. government or government government agencies. ● Foreign government obligations: ● Corporate bonds: Unsecured debt ● Asset-backed securities: Collateralized The following investments are reflects remaining maturities at September 30, 2021 and Millions of Dollars Carrying Amount Cash and Cash Equivalents Short-Term Investments and Long-Term Receivables September 30 December 31 September 30 December 31 September 30 December 31 2021 2020 2021 2020 2021 2020 Cash $ 634 597 Demand Deposits 1,847 1,133 Time Deposits 1 to 90 days 7,226 1,225 469 2,859 91 to 180 days 8 448 Within one year 5 13 One year through five years 2 1 U.S. Government 1 to 90 days 16 23 - - $ 9,723 2,978 482 3,320 2 1 The following investments in debt securities balance sheet at September 30, 2021 and December 31, 2020: Millions of Dollars Carrying Amount Cash and Cash Equivalents Short-Term Investments and Long-Term Receivables September 30 December 31 September 30 December 31 September 30 December 31 2021 2020 2021 2020 2021 2020 Major Security Type Corporate Bonds $ - - 113 130 184 143 Commercial Paper 110 13 69 155 U.S. Government - - - 4 6 13 U.S. Government 2 - 8 17 Foreign Government 10 - 3 2 Asset-backed 2 - 59 41 $ 110 13 196 289 260 216 Cash and Cash Equivalents and Short-Term Investments and Long-Term The following table summarizes the as available for sale: Millions of Dollars Amortized Cost Basis Fair Value September 30 December 31 September 30 December 31 2021 2020 2021 2020 Major Security Type Corporate bonds $ 296 271 297 273 Commercial paper 179 168 179 168 U.S. government obligations 6 17 6 17 U.S. government agency obligations 10 17 10 17 Foreign government obligations 13 2 13 2 Asset-backed securities 61 41 61 41 $ 565 516 566 518 At September 30, 2021 and December 31, 2020, total sale with net losses were negligible. these debt securities in an unrealized loss position were negligible. For the three- investments in debt securities classified 165 485 the three- investments in debt securities classified 109 298 Gross realized gains and securities sold and redeemed is determined using the specific Credit Risk Financial instruments potentially exposed short-term investments, long-term Our cash equivalents and short-term investments market funds, U.S. government and financial institutions, high-quality corporate securities. securities, U.S. government and government deposits with major international banks The credit risk from our OTC derivative counterparty to the transaction. and includes the use of cash-call margins when appropriate, nonperformance. trades are cleared primarily with an settled; however, margin cash calls, as well as for cash Our trade receivables result primarily international customer base, which limits receivables have payment 30 days creditworthiness of the counterparties. credit, prepayments and surety counterparties that both buy from and others to be offset against 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 a liability position at September 30, 2021 and December 31, 455 25 For these instruments, no had been downgraded below investment 396 million of additional collateral, either with cash

Fair Value Measurement

Fair Value Measurement	9 Months Ended
	Sep. 30, 2021
Fair Value Measurement [Abstract]
Fair Value Measurement	Note 12—Fair Value We carry a portion of our assets and liabilities price (i.e., the price that would be received to sell an the quality of valuation inputs under the following hierarchy: Level 1: Quoted prices (unadjusted) in an Level 2: Inputs other than quoted prices that are Level 3: Unobservable inputs that are The classification of an asset or liability is based on the lowest are initially classified as Level 3 are subsequently inputs is inconsequential to the overall liabilities initially reported as Level 2 are subsequently available. September 30, 2021, nor during the year ended December Recurring Fair Value Financial assets and liabilities reported at fair common shares, our investments Level 1 derivative assets and valued using unadjusted prices available investment in common shares investments in U.S. government valued using exchange prices. Level 2 derivative assets and sale contracts that are service companies that are all corroborated securities classified as available for sale including asset-backed securities, U.S. government valued using pricing provided by brokers data. Level 3 derivative assets and contracts where a significant readily available. historical relationships and other relevant economic measures. fair value. The following table summarizes the where the right of setoff exists Millions of Dollars September 30, 2021 December 31, 2020 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Investment in CVE shares $ 1,416 - - 1,416 1,256 - - 1,256 Investments in debt securities 6 560 - 566 17 501 - 518 Commodity derivatives 882 788 40 1,710 142 101 12 255 Total $ 2,304 1,348 40 3,692 1,415 602 12 2,029 Liabilities Commodity derivatives $ 893 723 159 1,775 120 91 9 220 Total $ 893 723 159 1,775 120 91 9 220 The following table summarizes those presented on our consolidated multiple derivative instruments 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 September 30, 2021 Assets $ 1,710 113 1,597 883 714 - 714 Liabilities 1,775 129 1,646 883 763 34 729 December 31, 2020 Assets $ 255 2 253 157 96 10 86 Liabilities 220 1 219 157 62 4 58 At September 30, 2021 and December 31, 2020, we balance sheet where we had the right of setoff. Reported Fair Values We used the following methods Cash and cash equivalents and short-term investments: sheet approximates fair carrying amount reported on the balance sheet Accounts and notes receivable (including the balance sheet approximates fair value of the current portion of fixed related parties. Investment in CVE: for a discussion of the carrying value and fair CVE common shares. Investments in debt securities classified securities categorized as Level value of investments in debt pricing provided by brokers Loans and advances—related parties: The carrying The fair value of fixed-rate Level 2 in the fair value hierarchy. Accounts payable (including payable and floating-rate Fixed-rate debt: The estimated pricing service that is corroborated the fair value hierarchy. Commercial paper: The carrying amount of our commercial and is reported on the balance sheet as short-term The following table summarizes the exists for commodity derivatives): Millions of Dollars Carrying Amount Fair Value September 30 December 31 September 30 December 31 2021 2020 2021 2020 Financial assets Investment in CVE shares $ 1,416 1,256 1,416 1,256 Commodity derivatives 827 88 827 88 Investments in debt securities 566 518 566 518 Loans and advances—related parties 114 220 114 220 Financial liabilities Total 18,815 14,478 22,797 19,106 Commodity derivatives 858 59 858 59

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 30, 2021
Accumulated Other Comprehensive Loss [Abstract]
Accumulated Other Comprehensive Loss	Note 13—Accumulated Other Comprehensive Accumulated other comprehensive Millions of Dollars Defined Benefit Plans Net Unrealized Gain (Loss) on Securities Foreign Currency Translation Accumulated Other Comprehensive Loss December 31, 2020 $ (425) 2 (4,795) (5,218) Other comprehensive income (loss) 169 (1) (73) 95 September 30, 2021 $ (256) 1 (4,868) (5,123) The following table summarizes reclassifications income (loss): Millions of Dollars Three Months Ended Nine Months Ended September 30 September 30 2021 2020 2021 2020 Defined benefit plans $ 29 30 83 46 The above amounts are included in the computation of net periodic benefit cost and are presented net of tax expense of $ 7 7 million for the three-month periods ended September 30, 2021 and September 30, 2020, respectively, and $ 22 11 nine-month periods ended September 30, 2021 and September 30, 2020, respectively .

Cash Flow Information

Cash Flow Information	9 Months Ended
	Sep. 30, 2021
Cash Flow Information [Abstract]
Cash Flow Information	Note 14—Cash Flow Information Millions of Dollars Nine Months Ended September 30 Cash Payments 2021 2020 Interest $ 695 591 Income taxes 358 803 Net Sales (Purchases) of Investments Short-term investments $ (5,487) (9,662) Short-term investments 8,478 8,776 Long-term investments purchased (228) (271) Long-term investments sold 83 68 $ 2,846 (1,089) We paid a deposit of $ 475 is included within the “Cash Flows from Investing for additional information on cash with our Concho acquisition and information on

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 2021
Employee Benefit Plans [Abstract]
Employee Benefit Plans	Note 15—Employee Benefit Plans Pension and Postretirement Millions of Dollars Pension Benefits Other Benefits 2021 2020 2021 2020 U.S. Int'l. U.S. Int'l. Components of Net Periodic Benefit Cost Three Months Ended September 30 Service cost $ 17 15 21 14 - 1 Interest cost 12 19 17 21 1 2 Expected return on plan assets (22) (30) (21) (37) - - Amortization of prior service credit - - - (1) (9) (7) Recognized net actuarial loss 9 8 12 5 - 1 Settlements 28 - 27 - - - Net periodic benefit cost $ 44 12 56 2 (8) (3) Nine Months Ended September 30 Service cost $ 56 46 63 41 1 2 Interest cost 40 59 51 63 3 5 Expected return on plan assets (66) (90) (63) (108) - - Amortization of prior service credit - - - (1) (28) (23) Recognized net actuarial loss 36 24 37 16 1 1 Settlements 72 - 28 (1) - - Curtailments 12 - - - - - Special Termination 9 - - - - - Net periodic benefit cost $ 159 39 116 10 (23) (15) The components of net periodic benefit cost, expenses” line item on our consolidated We recognized a proportionate settlement expense of $ 28 72 2021, respectively. the first quarter of 2021, would result qualified pension plan, a U.S. nonqualified supplemental plans. 12 U.S. pension benefit plans. values of the pension plan assets were updated plan and the U.S. nonqualified supplemental measurement date, the net pension 106 a result of an increase in the discount rate, The relevant assumptions are September 30 December 31 2021 2020 Expected return on plan assets 3.40 % 5.80 Relevant discount rates U.S. qualified pension plan 2.80 % 2.40 U.S. nonqualified pension plan 2.30 1.85 During the first nine months of 2021, we contributed 409 104 to our international benefit plans. 475 domestic qualified and nonqualified pension and postretirement 115 international qualified and nonqualified pension and Severance Accrual Activity Millions of Dollars Balance at December 31, 2020 $ 24 Accruals 165 Benefit payments (102) Balance at September 30, 2021 $ 87 Accruals include severance costs balance at September 30, 2021, $ 51 for information relating to Concho acquisition.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Note 16—Related Party Our related parties primarily include equity method Millions of Dollars Three Months Ended Nine Months Ended September 30 September 30 Significant Transactions 2021 2020 2021 2020 Operating revenues and other income $ 22 21 63 59 Purchases 1 - 5 - Operating expenses and selling, general expenses 45 16 135 43 Net interest (income) expense* $ - (1) (2) (5) *We paid interest to, . for information related equity affiliates.

Sales and Other Operating Reven

Sales and Other Operating Revenues	9 Months Ended
	Sep. 30, 2021
Sales and Other Operating Revenues [Abstract]
Sales and Other Operating Revenues	Note 17—Sales and Other Operating Revenues Revenue from Contracts The following table provides further Millions of Dollars Nine Months Ended September 30 September 30 2021 2020 2021 2020 Revenue from contracts $ 8,880 3,078 23,794 9,908 Revenue from contracts Physical contracts 2,620 1,280 7,348 3,432 Financial derivative contracts (174) 28 (434) (47) Consolidated sales and other operating $ 11,326 4,386 30,708 13,293 Revenues from contracts prices which qualify as derivatives accounted we have not elected NPNS. revenue from these contracts revenues is provided in conjunction Millions of Dollars Nine Months Ended September 30 September 30 2021 2020 2021 2020 Revenue from Outside the Scope of ASC Topic by Segment Lower 48 $ 2,123 1,018 5,934 2,692 Canada 266 152 776 452 Europe, Middle East and North Africa 231 110 638 288 Physical contracts $ 2,620 1,280 7,348 3,432 Millions of Dollars Nine Months Ended September 30 September 30 2021 2020 2021 2020 Revenue from Outside the Scope of ASC Topic by Product Crude oil $ 215 100 517 218 Natural gas 2,192 1,042 6,423 2,895 Other 213 138 408 319 Physical contracts $ 2,620 1,280 7,348 3,432 Practical Expedients Typically, they may extend longer, 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. 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 Receivables from Contracts At September 30, 2021, the “Accounts trade receivables of $ 4,262 1,827 contracts with customers 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 prices for which we do not elect NPNS and are is little distinction in the nature of the customer under contracts for which NPNS elected. Contract Liabilities from Contracts We have entered the optimization process for be made at stated milestones. are recorded as deferred their right to use the license. Payments are received in installments over the construction period. Millions of Dollars Contract Liabilities At December 31, 2020 $ 97 Contractual payments received 7 Revenue recognized (62) At September 30, 2021 $ 42 Amounts Recognized in the Consolidated Current liabilities $ 42 For the nine-month period of 2021, we recognized revenue of $62 million in the “Sales and other operating revenues” line on our consolidated income statement. No revenue was recognized during the three-month period ended September 30, 2021. We expect to recognize the contract liabilities as of September 30, 2021, as revenue during 2022.

Segment Disclosures and Related

Segment Disclosures and Related Information	9 Months Ended
	Sep. 30, 2021
Segment Disclosures and Related Information [Abstract]
Segment Disclosures and Related Information	Note 18—Segment Disclosures and Related We explore for, basis. six region: Alaska; Lower 48; Canada; Europe, Corporate and Other represents interest income and expense; activities, including licensing revenues; assets include all cash and cash equivalents We evaluate performance Intersegment sales are at On January 15, 2021, we completed our acquisition production company with operations included in our Lower 48 segment for the current with the Concho acquisition are included in our Corporate Analysis of Results by Operating Segment Millions of Dollars Three Months Ended Nine Months Ended September 30 September 30 2021 2020 2021 2020 Sales and Other Operating Revenues Alaska $ 1,395 864 3,946 2,396 Intersegment eliminations - (30) - (11) Alaska 1,395 834 3,946 2,385 Lower 48 7,566 2,323 19,968 6,859 Intersegment eliminations (1) (9) (5) (47) Lower 48 7,565 2,314 19,963 6,812 Canada 967 348 2,636 1,026 Intersegment eliminations (406) (20) (1,063) (200) Canada 561 328 1,573 826 Europe, Middle East and North Africa 1,127 432 3,270 1,320 Asia Pacific 673 477 1,880 1,930 Other International 1 1 4 5 Corporate and Other 4 - 72 15 Consolidated sales and other operating $ 11,326 4,386 30,708 13,293 Sales and Other Operating Revenues (1) United States $ 8,963 3,148 23,978 9,209 Australia - - - 605 Canada 561 328 1,573 826 China 193 161 519 374 Indonesia 231 167 634 503 Libya 313 6 833 50 Malaysia 249 148 727 447 Norway 678 358 1,708 1,046 United Kingdom 136 68 729 224 Other foreign countries 2 2 7 9 Worldwide consolidated $ 11,326 4,386 30,708 13,293 Sales and Other Operating Revenues Crude oil $ 6,433 2,321 16,725 6,981 Natural gas 4,099 1,509 11,422 4,354 Natural gas liquids 414 129 976 364 Other (2) 380 427 1,585 1,594 Consolidated sales and other operating $ 11,326 4,386 30,708 13,293 (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 Nine Months Ended September 30 September 30 2021 2020 2021 2020 Net Income (Loss) Attributable Alaska $ 405 (16) 935 (76) Lower 48 1,631 (78) 3,274 (880) Canada 155 (75) 267 (270) Europe, Middle East and North Africa 241 92 601 318 Asia Pacific 257 25 749 945 Other International (97) (8) (106) 14 Corporate and Other (213) (390) (268) (1,980) Consolidated net income (loss) attributable $ 2,379 (450) 5,452 (1,929) Millions of Dollars September 30 December 31 2021 2020 Total Assets Alaska $ 14,617 14,623 Lower 48 33,200 11,932 Canada 6,797 6,863 Europe, Middle East and North Africa 8,956 8,756 Asia Pacific 10,657 11,231 Other International 1 226 Corporate and Other 13,076 8,987 Consolidated total assets $ 87,304 62,618

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Taxes [Abstract]
Income Taxes	Note 19—Income Taxes Our effective tax rate 34 12 percent, respectively. and lower tax jurisdictions as well as the change in measurement of our CVE common shares. Our effective tax rate 35 8 percent, rate was adversely 75 acquired from Concho offsetting credits. recognized for the Australia-West During the three and nine-month periods of 2021, our valuation 4 156 million, respectively, 33 264 change to our U.S. valuation common shares and our expectation The Company has ongoing income tax audits completed earlier than anticipated. significantly impact our total unrecognized our financial statements is not estimable Our deferred tax liability 1.1 Concho acquisition. 150 tax credit carryovers

Basis of Presentation (Policy)

Basis of Presentation (Policy)	9 Months Ended
	Sep. 30, 2021
Basis of Presentation [Abstract]
Basis of Presentation	The interim-period financial information and, in the opinion of management, includes all known accruals and of the consolidated financial position of ConocoPhillips All such adjustments are of a normal and recurring information have been condensed Therefore, these financial statements notes included in our 2020 Annual Report on Form

Sales and Other Operating Rev_2

Sales and Other Operating Revenues (Policy)	9 Months Ended
	Sep. 30, 2021
Sales and Other Operating Revenues [Abstract]
Practical Expedients	Practical Expedients Typically, they may extend longer, 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. 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 and Contract Receivables from Contracts At September 30, 2021, the “Accounts trade receivables of $ 4,262 1,827 contracts with customers 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 prices for which we do not elect NPNS and are is little distinction in the nature of the customer under contracts for which NPNS elected. Contract Liabilities from Contracts We have entered the optimization process for be made at stated milestones. are recorded as deferred their right to use the license. Payments are received in installments over the construction period.

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2021
Inventories [Abstract]
Schedule of Inventories	Millions of Dollars September 30 2021 2020 Crude oil and natural gas $ 485 461 Materials and supplies 558 541 Total $ 1,043 1,002 Inventories valued on $ 305 282

Acquisitions and Dispositions (

Acquisitions and Dispositions (Tables)	9 Months Ended
	Sep. 30, 2021
Business Acquisition [Line Items]
Total Consideration	Total Consideration 194,243 1,599 Number of shares exchanged 195,842 1.46 285,929 $ 45.9025 $ 13,125 **Based on the ConocoPhillips average stock
Net Assets Acquired	Assets Acquired Millions of Dollars Cash and cash equivalents $ 382 Accounts receivable, net 745 Inventories 45 Prepaid expenses and other current 37 Investments and long-term receivables 333 Net properties, plants and equipment 18,968 Other assets 62 Total assets $ 20,572 Liabilities Assumed Accounts payable $ 638 Accrued income and other taxes 49 Employee benefit obligations 4 Other accruals 510 Long-term debt 4,696 Asset retirement obligations 310 Deferred income taxes 1,123 Other liabilities and deferred credits 117 Total liabilities $ 7,447 Net assets acquired $ 13,125
Concho Resources Incorporated [Member]
Business Acquisition [Line Items]
Non-Recurring Restructuring and Transition-Related Costs	Millions of Dollars Transaction Restructuring Cost Total Production and operating expenses $ 110 110 Selling, general and administration 135 64 199 Exploration expenses 18 4 22 Taxes 4 2 6 Other expenses - 29 29 $ 157 209 366
Supplemental Pro Forma (unaudited)	Millions of Dollars Supplemental Pro Forma (unaudited) Three Months Ended September 30, 2020 Nine Months Ended September 30, 2020 Total $ 5,019 16,384 Net loss (565) (1,184) Net loss attributable to ConocoPhillips (565) (1,230) $ per share Earnings per share: Three Months Ended September 30, 2020 Nine Months Ended September 30, 2020 Basic net loss $ (0.41) (0.90) Diluted net loss (0.41) (0.90)

Investment in Cenovus Energy (T

Investment in Cenovus Energy (Tables)	9 Months Ended
	Sep. 30, 2021
Cenovus Energy Inc [Member]
Schedule Of Available For Sale Securities [Line Items]
Gains and Losses Recorded in Other Income (Loss)	Millions of Dollars Three Months Ended Nine Months Ended September 30 September 30 2021 2020 2021 2020 Total $ 17 (162) 743 (1,302) Less: Net gain (loss) on equity securities sold during (50) - 177 - Unrealized gain (loss) on equity securities $ 67 (162) 566 (1,302)

Impairments (Tables)

Impairments (Tables)	9 Months Ended
	Sep. 30, 2021
Impairments [Abstract]
Before-tax impairment charges	Note 6—Impairments During the three- impairment charges within the following Millions of Dollars Nine Months Ended September 30 September 30 2021 2020 2021 2020 Alaska $ - - 3 - Lower 48 (89) 1 (93) 514 Europe, Middle East and North Africa - 1 - 7 $ (89) 2 (90) 521

Changes in Equity (Tables)

Changes in Equity (Tables)	9 Months Ended
	Sep. 30, 2021
Changes in Equity [Abstract]
Schedule of Changes in Equity	Note 8—Changes in Equity Millions of Dollars Attributable to ConocoPhillips Common Stock Par Value Capital in Excess of Par Treasury Stock Accum. Other Comprehensive Income (Loss) Retained Earnings Non- Controlling Interests Total For the three months ended September 30, 2021 Balances at June 30, 2021 $ 21 60,337 (48,278) (4,920) 37,116 44,276 Net income 2,379 2,379 Other comprehensive income (203) (203) Dividends paid ($ 0.43 (579) (579) Dividends payable ($ 0.46 (609) (609) Repurchase of company common stock (1,243) (1,243) Distributed under benefit plans 94 94 Balances at September 30, 2021 $ 21 60,431 (49,521) (5,123) 38,307 - 44,115 For the nine months ended September 30, 2021 Balances at December 31, 2020 $ 18 47,133 (47,297) (5,218) 35,213 29,849 Net income 5,452 5,452 Other comprehensive income 95 95 Dividends paid ($ 1.29 (1,750) (1,750) Dividends payable ($ 0.46 (609) (609) Acquisition of Concho 3 13,122 13,125 Repurchase of company common stock (2,224) (2,224) Distributed under benefit plans 176 176 Other 1 1 Balances at September 30, 2021 $ 21 60,431 (49,521) (5,123) 38,307 - 44,115 Millions of Dollars Attributable to ConocoPhillips Common Stock Par Value Capital in Excess of Par Treasury Stock Accum. Other Comprehensive Income (Loss) Retained Earnings Non- Controlling Interests Total For the three months ended September 30, 2020 Balances at June 30, 2020 $ 18 47,079 (47,130) (5,825) 37,351 31,493 Net income (450) (450) Other comprehensive income 159 159 Dividends paid ($ 0.42 (454) (454) Distributed under benefit plans 34 34 Other 1 1 Balances at September 30, 2020 $ 18 47,113 (47,130) (5,666) 36,448 - 30,783 For the nine months ended September 30, 2020 Balances at December 31, 2019 $ 18 46,983 (46,405) (5,357) 39,742 69 35,050 Net income (1,929) 46 (1,883) Other comprehensive loss (309) (309) Dividends paid ($ 1.26 (1,367) (1,367) Repurchase of company common stock (726) (726) Distributions to noncontrolling interests and other (32) (32) Dispositions (84) (84) Distributed under benefit plans 130 130 Other 1 2 1 4 Balances at September 30, 2020 $ 18 47,113 (47,130) (5,666) 36,448 - 30,783

Derivative and Financial Inst_2

Derivative and Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2021
Derivative and Financial Instruments [Abstract]
Balance Sheet Location and Fair Value Amounts of Derivatives	The following table presents the gross items where they appear on our consolidated Millions of Dollars September 30 December 31 2021 2020 Assets Prepaid expenses and other current $ 1,601 229 Other assets 109 26 Liabilities Other accruals 1,681 202 Other liabilities and deferred credits 94 18
Income Statement Location and Gain (Loss) Amounts of Derivatives	The gains (losses) from commodity derivatives income statement were: Millions of Dollars Nine Months Ended September 30 September 30 2021 2020 2021 2020 Sales and other operating revenues $ (483) 33 (862) 30 Other income (loss) 7 (2) 23 3 Purchased commodities 405 (27) 550 (29)
Net Exposures from Outstanding Commodity Derivative Contracts	The table below summarizes our material contracts: Open Position Long/(Short) September 30 December 31 2021 2020 Commodity Natural gas and power (billions 10 (20) (19) (10)
Net Carrying Amount of Held to Maturity Investments	The following investments are reflects remaining maturities at September 30, 2021 and Millions of Dollars Carrying Amount Cash and Cash Equivalents Short-Term Investments and Long-Term Receivables September 30 December 31 September 30 December 31 September 30 December 31 2021 2020 2021 2020 2021 2020 Cash $ 634 597 Demand Deposits 1,847 1,133 Time Deposits 1 to 90 days 7,226 1,225 469 2,859 91 to 180 days 8 448 Within one year 5 13 One year through five years 2 1 U.S. Government 1 to 90 days 16 23 - - $ 9,723 2,978 482 3,320 2 1
Debt Securities Carried at Fair Value	The following investments in debt securities balance sheet at September 30, 2021 and December 31, 2020: Millions of Dollars Carrying Amount Cash and Cash Equivalents Short-Term Investments and Long-Term Receivables September 30 December 31 September 30 December 31 September 30 December 31 2021 2020 2021 2020 2021 2020 Major Security Type Corporate Bonds $ - - 113 130 184 143 Commercial Paper 110 13 69 155 U.S. Government - - - 4 6 13 U.S. Government 2 - 8 17 Foreign Government 10 - 3 2 Asset-backed 2 - 59 41 $ 110 13 196 289 260 216 Cash and Cash Equivalents and Short-Term Investments and Long-Term
Amortized Cost Basis and Fair Value of Investments in Debt Securities Classified as Available for Sale	The following table summarizes the as available for sale: Millions of Dollars Amortized Cost Basis Fair Value September 30 December 31 September 30 December 31 2021 2020 2021 2020 Major Security Type Corporate bonds $ 296 271 297 273 Commercial paper 179 168 179 168 U.S. government obligations 6 17 6 17 U.S. government agency obligations 10 17 10 17 Foreign government obligations 13 2 13 2 Asset-backed securities 61 41 61 41 $ 565 516 566 518

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Measurement [Abstract]
Fair Value Hierarchy for Gross Financial Assets and Liabilities	Millions of Dollars September 30, 2021 December 31, 2020 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Investment in CVE shares $ 1,416 - - 1,416 1,256 - - 1,256 Investments in debt securities 6 560 - 566 17 501 - 518 Commodity derivatives 882 788 40 1,710 142 101 12 255 Total $ 2,304 1,348 40 3,692 1,415 602 12 2,029 Liabilities Commodity derivatives $ 893 723 159 1,775 120 91 9 220 Total $ 893 723 159 1,775 120 91 9 220
Commodity Derivative Balances Subject to Right of Setoff	The following table summarizes those presented on our consolidated multiple derivative instruments 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 September 30, 2021 Assets $ 1,710 113 1,597 883 714 - 714 Liabilities 1,775 129 1,646 883 763 34 729 December 31, 2020 Assets $ 255 2 253 157 96 10 86 Liabilities 220 1 219 157 62 4 58 At September 30, 2021 and December 31, 2020, we balance sheet where we had the right of setoff.
Net Fair Value of Financial Instruments	The following table summarizes the exists for commodity derivatives): Millions of Dollars Carrying Amount Fair Value September 30 December 31 September 30 December 31 2021 2020 2021 2020 Financial assets Investment in CVE shares $ 1,416 1,256 1,416 1,256 Commodity derivatives 827 88 827 88 Investments in debt securities 566 518 566 518 Loans and advances—related parties 114 220 114 220 Financial liabilities Total 18,815 14,478 22,797 19,106 Commodity derivatives 858 59 858 59

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2021
Accumulated Other Comprehensive Loss [Abstract]
Components of Accumulated Other Comprehensive Loss in the Equity Section of the Balance Sheet	Note 13—Accumulated Other Comprehensive Accumulated other comprehensive Millions of Dollars Defined Benefit Plans Net Unrealized Gain (Loss) on Securities Foreign Currency Translation Accumulated Other Comprehensive Loss December 31, 2020 $ (425) 2 (4,795) (5,218) Other comprehensive income (loss) 169 (1) (73) 95 September 30, 2021 $ (256) 1 (4,868) (5,123)
Items Reclassified out of Accumulated Other Comprehensive Income (Loss)	The following table summarizes reclassifications income (loss): Millions of Dollars Three Months Ended Nine Months Ended September 30 September 30 2021 2020 2021 2020 Defined benefit plans $ 29 30 83 46 The above amounts are included in the computation of net periodic benefit cost and are presented net of tax expense of $ 7 7 million for the three-month periods ended September 30, 2021 and September 30, 2020, respectively, and $ 22 11 nine-month periods ended September 30, 2021 and September 30, 2020, respectively

Cash Flow Information (Tables)

Cash Flow Information (Tables)	9 Months Ended
	Sep. 30, 2021
Cash Flow Information [Abstract]
Cash Flow Information	Note 14—Cash Flow Information Millions of Dollars Nine Months Ended September 30 Cash Payments 2021 2020 Interest $ 695 591 Income taxes 358 803 Net Sales (Purchases) of Investments Short-term investments $ (5,487) (9,662) Short-term investments 8,478 8,776 Long-term investments purchased (228) (271) Long-term investments sold 83 68 $ 2,846 (1,089)

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2021
Employee Benefit Plans [Abstract]
Pension and Postretirement Plans	Millions of Dollars Pension Benefits Other Benefits 2021 2020 2021 2020 U.S. Int'l. U.S. Int'l. Components of Net Periodic Benefit Cost Three Months Ended September 30 Service cost $ 17 15 21 14 - 1 Interest cost 12 19 17 21 1 2 Expected return on plan assets (22) (30) (21) (37) - - Amortization of prior service credit - - - (1) (9) (7) Recognized net actuarial loss 9 8 12 5 - 1 Settlements 28 - 27 - - - Net periodic benefit cost $ 44 12 56 2 (8) (3) Nine Months Ended September 30 Service cost $ 56 46 63 41 1 2 Interest cost 40 59 51 63 3 5 Expected return on plan assets (66) (90) (63) (108) - - Amortization of prior service credit - - - (1) (28) (23) Recognized net actuarial loss 36 24 37 16 1 1 Settlements 72 - 28 (1) - - Curtailments 12 - - - - - Special Termination 9 - - - - - Net periodic benefit cost $ 159 39 116 10 (23) (15)
Discount Rates	The relevant assumptions are September 30 December 31 2021 2020 Expected return on plan assets 3.40 % 5.80 Relevant discount rates U.S. qualified pension plan 2.80 % 2.40 U.S. nonqualified pension plan 2.30 1.85
Severance Accrual	Severance Accrual Activity Millions of Dollars Balance at December 31, 2020 $ 24 Accruals 165 Benefit payments (102) Balance at September 30, 2021 $ 87

Related Party Transactions (Tab

Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2021
Related Party Transactions [Abstract]
Significant Transactions with Related Parties	Millions of Dollars Three Months Ended Nine Months Ended September 30 September 30 Significant Transactions 2021 2020 2021 2020 Operating revenues and other income $ 22 21 63 59 Purchases 1 - 5 - Operating expenses and selling, general expenses 45 16 135 43 Net interest (income) expense* $ - (1) (2) (5) *We paid interest to, .

Sales and Other Operating Rev_3

Sales and Other Operating Revenues (Tables)	9 Months Ended
	Sep. 30, 2021
Sales and Other Operating Revenues [Abstract]
Disaggregation of Revenue	Millions of Dollars Nine Months Ended September 30 September 30 2021 2020 2021 2020 Revenue from contracts $ 8,880 3,078 23,794 9,908 Revenue from contracts Physical contracts 2,620 1,280 7,348 3,432 Financial derivative contracts (174) 28 (434) (47) Consolidated sales and other operating $ 11,326 4,386 30,708 13,293 Millions of Dollars Nine Months Ended September 30 September 30 2021 2020 2021 2020 Revenue from Outside the Scope of ASC Topic by Segment Lower 48 $ 2,123 1,018 5,934 2,692 Canada 266 152 776 452 Europe, Middle East and North Africa 231 110 638 288 Physical contracts $ 2,620 1,280 7,348 3,432 Millions of Dollars Nine Months Ended September 30 September 30 2021 2020 2021 2020 Revenue from Outside the Scope of ASC Topic by Product Crude oil $ 215 100 517 218 Natural gas 2,192 1,042 6,423 2,895 Other 213 138 408 319 Physical contracts $ 2,620 1,280 7,348 3,432
Contract with Customer, Asset and Liability	Millions of Dollars Contract Liabilities At December 31, 2020 $ 97 Contractual payments received 7 Revenue recognized (62) At September 30, 2021 $ 42 Amounts Recognized in the Consolidated Current liabilities $ 42

Segment Disclosures and Relat_2

Segment Disclosures and Related Information (Tables)	9 Months Ended
	Sep. 30, 2021
Segment Disclosures and Related Information [Abstract]
Analysis of Results by Operating Segment	Millions of Dollars Three Months Ended Nine Months Ended September 30 September 30 2021 2020 2021 2020 Sales and Other Operating Revenues Alaska $ 1,395 864 3,946 2,396 Intersegment eliminations - (30) - (11) Alaska 1,395 834 3,946 2,385 Lower 48 7,566 2,323 19,968 6,859 Intersegment eliminations (1) (9) (5) (47) Lower 48 7,565 2,314 19,963 6,812 Canada 967 348 2,636 1,026 Intersegment eliminations (406) (20) (1,063) (200) Canada 561 328 1,573 826 Europe, Middle East and North Africa 1,127 432 3,270 1,320 Asia Pacific 673 477 1,880 1,930 Other International 1 1 4 5 Corporate and Other 4 - 72 15 Consolidated sales and other operating $ 11,326 4,386 30,708 13,293 Sales and Other Operating Revenues (1) United States $ 8,963 3,148 23,978 9,209 Australia - - - 605 Canada 561 328 1,573 826 China 193 161 519 374 Indonesia 231 167 634 503 Libya 313 6 833 50 Malaysia 249 148 727 447 Norway 678 358 1,708 1,046 United Kingdom 136 68 729 224 Other foreign countries 2 2 7 9 Worldwide consolidated $ 11,326 4,386 30,708 13,293 Sales and Other Operating Revenues Crude oil $ 6,433 2,321 16,725 6,981 Natural gas 4,099 1,509 11,422 4,354 Natural gas liquids 414 129 976 364 Other (2) 380 427 1,585 1,594 Consolidated sales and other operating $ 11,326 4,386 30,708 13,293 (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 Nine Months Ended September 30 September 30 2021 2020 2021 2020 Net Income (Loss) Attributable Alaska $ 405 (16) 935 (76) Lower 48 1,631 (78) 3,274 (880) Canada 155 (75) 267 (270) Europe, Middle East and North Africa 241 92 601 318 Asia Pacific 257 25 749 945 Other International (97) (8) (106) 14 Corporate and Other (213) (390) (268) (1,980) Consolidated net income (loss) attributable $ 2,379 (450) 5,452 (1,929) Millions of Dollars September 30 December 31 2021 2020 Total Assets Alaska $ 14,617 14,623 Lower 48 33,200 11,932 Canada 6,797 6,863 Europe, Middle East and North Africa 8,956 8,756 Asia Pacific 10,657 11,231 Other International 1 226 Corporate and Other 13,076 8,987 Consolidated total assets $ 87,304 62,618

Consolidated Statement of Cas_3

Consolidated Statement of Cash Flows - Restricted Cash (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Prepaid Expenses and Other Current Assets [Member]
Restricted Cash	$ 95	$ 94
Other Assets [Member]
Restricted Cash	$ 259	$ 230

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Inventories [Abstract]
Crude oil and natural gas	$ 485	$ 461
Materials and supplies	558	541
Total Inventories	1,043	1,002
Inventories valued on the LIFO basis	$ 305	$ 282

Acquisitions and Dispositions -

Acquisitions and Dispositions - Announced Acquisition of Shell Permian Assets - Textual (Details) $ in Millions	1 Months Ended	9 Months Ended
	Sep. 30, 2021USD ($)ami	Sep. 30, 2021USD ($)a	Sep. 30, 2020USD ($)
Asset Acquisition [Line Items]
Deposit recorded in Cash Flows from Investing - Other		$ 386	$ 31
Shell Permian Assets [Member]
Asset Acquisition [Line Items]
Deposit recorded in Cash Flows from Investing - Other		$ 475
Shell Permian Assets [Member] | Scenario Plan [Member]
Asset Acquisition [Line Items]
Total asset consideration	$ 9,500
Area of land | a	225,000	225,000
Length of operated crude, gas and water pipelines and infrastructure | mi	600

Acquisitions and Dispositions_2

Acquisitions and Dispositions - Acquisition of Concho Resources Inc. (Concho) - Textual (Details) $ in Millions	Feb. 08, 2021USD ($)	Jan. 15, 2021USD ($)	Sep. 30, 2021USD ($)	Mar. 31, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)
Business Acquisition [Line Items]
Income tax provision			$ 1,203		$ (62)		$ 2,924	$ (171)
Total revenues and other income						$ 4,499
Net loss						(1,600)
Sales and other operating revenues [Member] | Commodity Contract [Member]
Business Acquisition [Line Items]
Loss from commodity derivatives, before tax and after tax			483		(33)		862	(30)
Other Income (Loss) [Member] | Commodity Contract [Member]
Business Acquisition [Line Items]
Loss from commodity derivatives, before tax and after tax			(7)		2		(23)	(3)
Purchased commodities [Member] | Commodity Contract [Member]
Business Acquisition [Line Items]
Loss from commodity derivatives, before tax and after tax			(405)		27		$ (550)	29
Concho Resources Incorporated [Member]
Business Acquisition [Line Items]
Name of acquired entity							Concho Resources Inc.
Date of acquisition agreement							Jan. 15, 2021
Exchange ratio		1.46
Total Consideration		$ 13,125
Capitalized costs, proved properties		11,800
Capitalized costs, unproved properties		$ 6,900
Transaction Cost				$ 157			$ 157
Restructuring Cost			$ 52				209
Income tax provision	$ 75						$ 75
Total revenues and other income					5,019			16,384
Net loss					$ 565			1,184
Concho Resources Incorporated [Member] | Concho Resources Inc. [Member]
Business Acquisition [Line Items]
Impairment of Oil and Gas Properties								10,500
Goodwill, impairment loss								$ 1,900
Concho Resources Incorporated [Member] | Commodity Contract [Member]
Business Acquisition [Line Items]
Loss from commodity derivatives, before tax and after tax				305		233
Concho Resources Incorporated [Member] | Sales and other operating revenues [Member] | Commodity Contract [Member]
Business Acquisition [Line Items]
Loss from commodity derivatives, before tax and after tax				173		$ 305
Concho Resources Incorporated [Member] | Sales and other operating revenues [Member] | Accelerated contracts [Member]
Business Acquisition [Line Items]
Loss from commodity derivatives, before tax and after tax				$ 132

Acquisitions and Dispositions_3

Acquisitions and Dispositions - Total Consideration (Details) $ / shares in Units, $ in Millions	Jan. 15, 2021USD ($)$ / sharesshares	Sep. 30, 2021shares	Dec. 31, 2020shares
Total Consideration
Number of shares of common stock issued		2,089,046,718	1,798,844,267
Concho Resources Incorporated [Member]
Total Consideration
Exchange ratio	1.46
Total Consideration | $	$ 13,125
Concho Resources Incorporated [Member] | Common Stock [Member]
Total Consideration
Additional shares of ConocoPhillips common stock issued as consideration	285,929,000
Concho Resources Incorporated [Member] | Arithmetic Average [Member]
Total Consideration
Average price per share of ConocoPhillips common stock | $ / shares	$ 45.9025
Concho Resources Incorporated [Member] | Concho Resources Inc. [Member]
Total Consideration
Number of shares of common stock issued	194,243,000
Number of shares of common stock outstanding	194,243,000
Number of shares of stock awards outstanding	1,599,000
Number of shares exchanged	195,842,000

Acquisitions and Dispositions_4

Acquisitions and Dispositions - Net Assets Acquired (Details) - USD ($) $ in Millions	Sep. 30, 2021	Jan. 15, 2021	Dec. 31, 2020
Assets Acquired
Investments and long-term receivables	$ 8,058		$ 8,017
Concho Resources Incorporated [Member]
Assets Acquired
Cash and cash equivalents		$ 382
Accounts receivable, net		745
Inventories		45
Prepaid expenses and other current assets		37
Investments and long-term receivables		333
Net properties, plants and equipment		18,968
Other assets		62
Total assets acquired		20,572
Liabilities Assumed
Accounts Payable		638
Accrued income and other taxes		49
Employee benefit obligations		4
Other accruals		510
Long-term debt		4,696
Asset retirement obligations and accrued environmental costs		310
Deferred income taxes		1,123
Other liabilities and deferred credits		117
Total Liabilities assumed		7,447
Net assets acquired		$ 13,125

Acquisitions and Dispositions_5

Acquisitions and Dispositions - Non-Recurring Restructuring and Transition-Related Costs (Details) - Concho Resources Incorporated [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2021
Business Acquisition [Line Items]
Transaction Cost		$ 157	$ 157
Restructuring Cost	$ 52		209
Total Costs			366
Production and operating expenses [Member]
Business Acquisition [Line Items]
Restructuring Cost			110
Total Costs			110
Selling, general and administrative expenses [Member]
Business Acquisition [Line Items]
Transaction Cost			135
Restructuring Cost			64
Total Costs			199
Exploration expenses [Member]
Business Acquisition [Line Items]
Transaction Cost			18
Restructuring Cost			4
Total Costs			22
Taxes other than income taxes [Member]
Business Acquisition [Line Items]
Transaction Cost			4
Restructuring Cost			2
Total Costs			6
Other expenses [Member]
Business Acquisition [Line Items]
Transaction Cost			0
Restructuring Cost			29
Total Costs			$ 29

Acquisitions and Dispositions_6

Acquisitions and Dispositions - Supplemental Pro Forma (unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Business Acquisition [Line Items]
Total revenues and other income		$ 4,499
Net loss		$ 1,600
Concho Resources Incorporated [Member]
Business Acquisition [Line Items]
Total revenues and other income	$ 5,019		$ 16,384
Net loss	(565)		(1,184)
Net loss attributable to ConocoPhillips	$ (565)		$ (1,230)
Basic net loss	$ (0.41)		$ (0.90)
Diluted net loss	$ (0.41)		$ (0.90)

Acquisitions and Dispositions_7

Acquisitions and Dispositions - Assets Sold - Textual (Details)	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2021USD ($)	Mar. 31, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)d / MBoe	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gain (loss) on dispositions	$ 2,000,000		$ (3,000,000)	$ 294,000,000	$ 551,000,000
Lower 48 Segment
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from asset dispositions	150,000,000
Before-tax gain (loss) on disposition	26,000,000
Production | d / MBoe				15
Canada and Lower 48 [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gain (loss) on dispositions	121,000,000			$ 222,000,000		$ 0
Barossa project [Member] | Asia Pacific [Member] | Operating Segments [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Before-tax gain (loss) on disposition		$ 200,000,000
Barossa project [Member] | Asia Pacific [Member] | Operating Segments [Member] | Scenario Plan [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from asset dispositions						$ 200,000,000
Noncore Exploration Interests in Argentina [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Before-tax gain (loss) on disposition	$ 179,000,000

Investments, Loans and Long-T_2

Investments, Loans and Long-Term Receivables - Textual (Details) $ in Millions	1 Months Ended
	Dec. 31, 2021USD ($)	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2012USD ($)
Equity method investments
Loan balance with affiliated company		$ 114	$ 220
APLNG [Member]
Equity method investments
Project finance facility, maximum borrowing capacity				$ 8,500
Line Of Credit Facility Value Outstanding		5,700
Book value of equity method investment		$ 6,400
APLNG [Member] | Forecast [Member]
Equity method investments
Additional ownership percentage in equity investment acquired	10.00%
Payments to acquire equity method investments	$ 1,600
APLNG [Member] | U S Private Placement Bond [Member]
Equity method investments
Number of note facilities		2
QG3 [Member]
Equity method investments
Loan balance with affiliated company		$ 114

Investment in Cenovus Energy -

Investment in Cenovus Energy - Textual (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		5 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Debt and Equity Securities, FV-NI [Line Items]
Investment in Cenovus Energy	$ 1,416		$ 1,416	$ 1,416		$ 1,256
Cenovus Energy Inc [Member]
Debt and Equity Securities, FV-NI [Line Items]
(Gain) loss on investment in Cenovus Energy	(67)	$ 162		(566)	$ 1,302
Common Stock [Member] | Cenovus Energy Inc [Member]
Debt and Equity Securities, FV-NI [Line Items]
Investment in equity security, fair value	$ 1,400		$ 1,400	$ 1,400
Shares exchanged for assets held for sale	141		141	141		208
Investment owned, common stock, percent of issued and outstanding	7.00%		7.00%	7.00%
Cenovus Energy common share price	$ 10.06		$ 10.06	$ 10.06
Equity securities, shares sold	47		67
Proceeds recognized from sale of equity securities	$ 404		$ 584
Proceeds received from sale of equity securities			$ 569

Investment in Cenovus Energy _2

Investment in Cenovus Energy - Gains and Losses Recorded in Other Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Debt and Equity Securities, FV-NI [Line Items]
Total net gain (loss) on CVE common shares			$ 743	$ (1,302)
Cenovus Energy Inc [Member]
Debt and Equity Securities, FV-NI [Line Items]
Total net gain (loss) on CVE common shares	$ 17	$ (162)	743	(1,302)
Less: Net gain on equity securities sold during the period	(50)	0	177	0
Unrealized gain (loss) on equity securities still held at the reporting date	$ 67	$ (162)	$ 566	$ (1,302)

Impairments - Before Tax Impair

Impairments - Before Tax Impairment Charges (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Impairments	$ (89)	$ 2		$ (90)	$ 521
Alaska Segment [Member]
Segment Reporting Information [Line Items]
Impairments	0	0		3	0
Lower 48 [Member]
Segment Reporting Information [Line Items]
Impairments	(89)	1	$ 511	(93)	514
Europe, Middle East and North Africa [Member]
Segment Reporting Information [Line Items]
Impairments	$ 0	$ 1		$ 0	$ 7

Impairments - Textual (Details)

Impairments - Textual (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Impairments	$ (89)	$ 2		$ (90)	$ 521
Lower 48 [Member]
Segment Reporting Information [Line Items]
Impairments	$ (89)	$ 1	$ 511	$ (93)	$ 514

Debt - Textual (Details)

Debt - Textual (Details) - USD ($)	Jan. 15, 2021	Sep. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Debt [Abstract]
Debt balance		$ 19,700,000,000		$ 15,400,000,000
Short Term Debt [Line Items]
Commercial Paper Program, Amount Outstanding		$ 281,000,000
Concho Resources Incorporated [Member]
Debt Instrument [Line Items]
Adjustment to fair value of the senior notes	$ 800,000,000
Long-term debt	4,696,000,000
Business Combination, Notes Offered In Exchange	$ 3,900,000,000		$ 3,900,000,000
Business Combination, Percent Of Notes Offered Tendered And Exchanged For New Debt			98.00%
Business Combination, Tendered And Exchanged Notes For New Debt			$ 3,800,000,000
Debt Instrument Face Amount			$ 67,000,000
Moody's, A3 Rating [Member]
Debt Instrument [Line Items]
Debt Instrument, Credit Rating		Moody’s affirmed its rating of our senior long-term debt of “A3” and upgraded the outlook to “positive” from “stable.”
Fitch, A Rating [Member]
Debt Instrument [Line Items]
Debt Instrument, Credit Rating		Fitch affirmed its rating of our long-term debt as “A” with a “stable” outlook.
Standard & Poor's, A Rating [Member]
Debt Instrument [Line Items]
Debt Instrument, Credit Rating		S&P affirmed its rating of our long-term debt of “A-” with a “stable” outlook.
Revolving Credit Facility [Member]
Short Term Debt [Line Items]
Maximum borrowing capacity under revolving credit facility		$ 6,000,000,000
Line of credit facility, expiration date		May 31, 2023
Remaining borrowing capacity under revolving credit facility		$ 6,000,000,000
Commercial Paper Program, Amount Outstanding		0		0
Minimum limit of debt for cross default provision		200,000,000
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 capacity under revolving credit facility		$ 6,000,000,000
Commercial Paper Program, Amount Outstanding				$ 300,000,000
Conoco Phillips Commercial Paper Program [Member] | Commercial Paper [Member] | Maximum [Member]
Short Term Debt [Line Items]
Maturity period of commercial paper (in days)		maturities of 90 days

Debt - Debt Assumed (Details)

Debt - Debt Assumed (Details) - Concho Resources Incorporated [Member] - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Jan. 15, 2021
Debt Instrument [Line Items]
Long-term debt		$ 4,696
3.75% Notes due 2027
Debt Instrument [Line Items]
Stated interest rate		3.75%
Maturity date	2027
Long-term debt		$ 1,000
4.3% Notes due 2028
Debt Instrument [Line Items]
Stated interest rate		4.30%
Maturity date	2028
Long-term debt		$ 1,000
2.4% Notes due 2031
Debt Instrument [Line Items]
Stated interest rate		2.40%
Maturity date	2031
Long-term debt		$ 500
4.875% Notes due 2047
Debt Instrument [Line Items]
Stated interest rate		4.875%
Maturity date	2047
Long-term debt		$ 800
4.85% Notes due 2048
Debt Instrument [Line Items]
Stated interest rate		4.85%
Maturity date	2048
Long-term debt		$ 600

Changes in Equity - Schedule of

Changes in Equity - Schedule of Changes in Equity (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	$ 44,276	$ 31,493	$ 29,849	$ 35,050
Net Income (Loss)	2,379	(450)	5,452	(1,883)
Other Comprehensive Income (Loss)	(203)	159	95	(309)
Dividends paid	(579)	(454)	(1,750)	(1,367)
Dividends payable	(609)		(609)
Acquisition of Concho			13,125
Repurchase of company common stock	(1,243)		(2,224)	(726)
Distributions to noncontrolling interests and other				(32)
Disposition				(84)
Distributed under benefit plans	94	34	176	130
Other		1	1	4
Ending Balance	44,115	30,783	44,115	30,783
Par Value - Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	21	18	18	18
Acquisition of Concho			3
Ending Balance	21	18	21	18
Capital in excess of par [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	60,337	47,079	47,133	46,983
Acquisition of Concho			13,122
Distributed under benefit plans	94	34	176	130
Ending Balance	60,431	47,113	60,431	47,113
Treasury Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(48,278)	(47,130)	(47,297)	(46,405)
Repurchase of company common stock	(1,243)		(2,224)	(726)
Other				1
Ending Balance	(49,521)	(47,130)	(49,521)	(47,130)
Accum Other Comprehensive Income (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(4,920)	(5,825)	(5,218)	(5,357)
Other Comprehensive Income (Loss)	(203)	159	95	(309)
Ending Balance	(5,123)	(5,666)	(5,123)	(5,666)
Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	37,116	37,351	35,213	39,742
Net Income (Loss)	2,379	(450)	5,452	(1,929)
Dividends paid	(579)	(454)	(1,750)	(1,367)
Dividends payable	(609)		(609)
Other		1	1	2
Ending Balance	$ 38,307	36,448	$ 38,307	36,448
Noncontrolling Interests [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance				69
Net Income (Loss)				46
Distributions to noncontrolling interests and other				(32)
Disposition				(84)
Other				1
Ending Balance		$ 0		$ 0

Changes in Equity - Parenthetic

Changes in Equity - Parenthetical (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Changes in Equity [Abstract]
Dividends paid, per share of common stock (dollars per share)	$ 0.43	$ 0.42	$ 1.29	$ 1.26
Dividends payable, per share of common stock (dollars per share)	$ 0.46		$ 0.46

Guarantees - Textual (Details)

Guarantees - Textual (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Guarantor Obligations [Line Items]
Environmental accruals for known contamination in carrying amount recorded for indemnifications	$ 191	$ 180
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	9 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 21 years
Max potential future payments-reckless breach [Member] | Australia Pacific APLNG [Member]
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	$ 1,200
Max potential future payments-prorata share [Member] | Australia Pacific APLNG [Member]
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	670
Continued development [Member] | Australia Pacific APLNG [Member]
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	180
Guarantor Obligations, Current Carrying Value	$ 11
Continued development [Member] | Australia Pacific APLNG [Member] | Maximum [Member]
Guarantor Obligations [Line Items]
Terms of Guarantees Outstanding	15 to 24 years
Other Guarantees [Member]
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	$ 720
Guarantor Obligations, Current Carrying Value	$ 11
Other Guarantees [Member] | Maximum [Member]
Guarantor Obligations [Line Items]
Terms of Guarantees Outstanding	one to five years
Indemnifications [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Current Carrying Value	$ 30

Contingencies and Commitments -

Contingencies and Commitments - Textual (Details) $ in Millions	May 10, 2021USD ($)	Aug. 02, 2019USD ($)	Mar. 31, 2019USD ($)	Aug. 31, 2018USD ($)	Apr. 30, 2018USD ($)	Sep. 30, 2021USD ($)	Dec. 31, 2017Lawsuits	Jun. 30, 2021USD ($)	Dec. 31, 2020USD ($)	Aug. 29, 2019USD ($)
Loss Contingencies [Line Items]
Total environmental accrual included in balance sheet						$ 191			$ 180
Letters of Credit Outstanding, Amount						$ 281
Performance Guarantee [Member]
Loss Contingencies [Line Items]
Loss Contingency Damages Sought Value	$ 200
Several Louisiana parishes and the State of Louisiana against oil and gas companies [Member]
Loss Contingencies [Line Items]
Loss Contingency, New Claims Filed, Number | Lawsuits							43
Several Louisiana parishes and the State of Louisiana against oil and gas companies [Member] | ConocoPhillips Entities [Member]
Loss Contingencies [Line Items]
Loss Contingency, New Claims Filed, Number | Lawsuits							22
Outer Continental Shelf Lease [Member] | Phillips Petroleum Company [Member]
Loss Contingencies [Line Items]
Ownership percentage in equity investment						25.00%
Sale of interest, duration						30 years
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		$ 33		$ 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								$ 766
US and Canada [Member] | Cleanup Remediation Activities [Member]
Loss Contingencies [Line Items]
Loss Contingency, Settlement Agreement, Terms						P30Y

Derivative and Financial Inst_3

Derivative and Financial Instruments - Commodity Balance Sheet (Details) - Commodity Contract [Member] - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Commodity derivative assets	$ 1,601	$ 229
Other assets [Member]
Derivatives, Fair Value [Line Items]
Commodity derivative assets	109	26
Other accruals [Member]
Derivatives, Fair Value [Line Items]
Commodity derivative liabilities	1,681	202
Other liabilities and deferred credits [Member]
Derivatives, Fair Value [Line Items]
Commodity derivative liabilities	$ 94	$ 18

Derivative and Financial Inst_4

Derivative and Financial Instruments - Commodity Gain (Loss) (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Jan. 15, 2021
Commodity Contract [Member] | Concho Resources Incorporated [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from commodity derivatives			$ (305)		$ (233)
Derivative, Fair Value, Net								$ (456)
Increase (Decrease) in Commodity Contract Assets and Liabilities		$ 69	692
Sales and other operating revenues [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from commodity derivatives	$ (483)			$ 33		$ (862)	$ 30
Sales and other operating revenues [Member] | Commodity Contract [Member] | Concho Resources Incorporated [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from commodity derivatives			(173)		$ (305)
Sales and other operating revenues [Member] | Accelerated contracts [Member] | Concho Resources Incorporated [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from commodity derivatives			$ (132)
Other Income (Loss) [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from commodity derivatives	7			(2)		23	3
Purchased commodities [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from commodity derivatives	$ 405			$ (27)		$ 550	$ (29)

Derivative and Financial Inst_5

Derivative and Financial Instruments - Commodity Notional (Details) - Commodity Contract [Member] - Bcf	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Natural gas and power, Fixed price [Member] | Long [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Commodity derivatives - volumetric material net exposures	10
Natural gas and power, Fixed price [Member] | Short [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Commodity derivatives - volumetric material net exposures		20
Natural gas and power, Basis [Member] | Short [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Commodity derivatives - volumetric material net exposures	19	10

Derivative and Financial Inst_6

Derivative and Financial Instruments - Financial Instruments at Cost Plus Accrued Interest (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Schedule of Held-to-maturity Securities [Line Items]
Cash and Cash Equivalents, carried at cost plus accrued interest	$ 9,723	$ 2,978
Short-term investments, carried at cost plus accrued interest	482	3,320
Investments and long-term receivables carried at cost plus accrued interest	2	1
Cash [Member]
Schedule of Held-to-maturity Securities [Line Items]
Cash and Cash Equivalents, carried at cost plus accrued interest	634	597
Demand Deposits [Member]
Schedule of Held-to-maturity Securities [Line Items]
Cash and Cash Equivalents, carried at cost plus accrued interest	1,847	1,133
Time Deposits [Member] | 1 to 90 days [Member]
Schedule of Held-to-maturity Securities [Line Items]
Cash and Cash Equivalents, carried at cost plus accrued interest	7,226	1,225
Short-term investments, carried at cost plus accrued interest	469	2,859
Time Deposits [Member] | 91 to 180 days [Member]
Schedule of Held-to-maturity Securities [Line Items]
Short-term investments, carried at cost plus accrued interest	8	448
Time Deposits [Member] | Within one year [Member]
Schedule of Held-to-maturity Securities [Line Items]
Short-term investments, carried at cost plus accrued interest	5	13
Time Deposits [Member] | Remaining Maturities Greater than One Year Through Five Years [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investments and long-term receivables carried at cost plus accrued interest	2	1
U.S. Government Obligations [Member] | 1 to 90 days [Member]
Schedule of Held-to-maturity Securities [Line Items]
Cash and Cash Equivalents, carried at cost plus accrued interest	16	23
Short-term investments, carried at cost plus accrued interest	$ 0	$ 0

Derivative and Financial Inst_7

Derivative and Financial Instruments - Financial Instruments at Fair Value (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]
Cash and cash equivalents	$ 9,833	$ 2,991
Short-term Investments	678	3,609
Investments and long-term receivables	8,058	8,017
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	110	13
Short-term Investments	196	289
Remaining Maturities Greater than One Year Through Eight Years [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Investments and long-term receivables	260	216
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	0
Short-term Investments	113	130
Corporate Bonds [Member] | Remaining Maturities Greater than One Year Through Eight Years [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Investments and long-term receivables	184	143
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	110	13
Short-term Investments	69	155
U.S. Government Obligations [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	0	4
U.S. Government Obligations [Member] | Remaining Maturities Greater than One Year Through Eight Years [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Investments and long-term receivables	6	13
U.S. Government Agency Obligations [Member] | Remaining Maturities within One Year [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Short-term Investments	2	0
U.S. Government Agency Obligations [Member] | Remaining Maturities Greater than One Year Through Eight Years [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Investments and long-term receivables	8	17
Foreign Government Obligations [Member] | Remaining Maturities within One Year [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Short-term Investments	10	0
Foreign Government Obligations [Member] | Remaining Maturities Greater than One Year Through Eight Years [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Investments and long-term receivables	3	2
Asset-backed Securities [Member] | Remaining Maturities within One Year [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Short-term Investments	2	0
Asset-backed Securities [Member] | Remaining Maturities Greater than One Year Through Eight Years [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Schedule Of Available For Sale Securities [Line Items]
Investments and long-term receivables	$ 59	$ 41

Derivative and Financial Inst_8

Derivative and Financial Instruments - Cost Basis to Fair Value (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost Basis	$ 565		$ 565		$ 516
Fair Value	566		566		518
Proceeds from sales and redemptions of investments in debt securities classified as available for sale	165	$ 109	485	$ 298
Corporate Bonds [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost Basis	296		296		271
Fair Value	297		297		273
Commercial Paper [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost Basis	179		179		168
Fair Value	179		179		168
U.S. Government Obligations [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost Basis	6		6		17
Fair Value	6		6		17
U.S. Government Agency Obligations [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost Basis	10		10		17
Fair Value	10		10		17
Foreign Government Obligations [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost Basis	13		13		2
Fair Value	13		13		2
Asset-backed Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost Basis	61		61		41
Fair Value	$ 61		$ 61		$ 41

Derivative and Financial Inst_9

Derivative and Financial Instruments - Credit Risk Textual (Details) - USD ($)	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Aggregate fair value of all derivative instruments in a liability position	$ 455,000,000	$ 25,000,000
Collateral was posted for derivative instruments in a liability position	0	$ 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	$ 396,000,000
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 Hie

Fair Value Measurement - FV Hierarchy (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in CVE shares	$ 1,416	$ 1,256
Investments in debt securities	566	518
Commodity derivative asset, gross	1,710	255
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in CVE shares	1,416	1,256
Investments in debt securities	566	518
Commodity derivative asset, gross	1,710	255
Total assets	3,692	2,029
Commodity derivative liability, gross	1,775	220
Total liabilities	1,775	220
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in CVE shares	1,416	1,256
Investments in debt securities	6	17
Commodity derivative asset, gross	882	142
Total assets	2,304	1,415
Commodity derivative liability, gross	893	120
Total liabilities	893	120
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in CVE shares	0	0
Investments in debt securities	560	501
Commodity derivative asset, gross	788	101
Total assets	1,348	602
Commodity derivative liability, gross	723	91
Total liabilities	723	91
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in CVE shares	0	0
Investments in debt securities	0	0
Commodity derivative asset, gross	40	12
Total assets	40	12
Commodity derivative liability, gross	159	9
Total liabilities	$ 159	$ 9

Fair Value Measurement - FV of

Fair Value Measurement - FV of Commodity Derivatives (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Offsetting Derivative Assets [Abstract]
Assets - gross amounts recognized	$ 1,710	$ 255
Assets - amounts without right of setoff	113	2
Assets - gross amounts	1,597	253
Assets - gross amounts offset	883	157
Assets - net amounts presented	714	96
Assets - cash collateral	0	10
Assets - net amounts	714	86
Offsetting Derivative Liabilities [Abstract]
Liabilities - gross amounts recognized	1,775	220
Liabilities - amounts without right of setoff	129	1
Liabilities - gross amounts recognized	1,646	219
Liabilities - gross amounts offset	883	157
Liabilities - net amounts presented	763	62
Liabilities - cash collateral	34	4
Liabilities - net amounts	$ 729	$ 58

Fair Value Measurement - FV o_2

Fair Value Measurement - FV of Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Carrying Amount [Member]
Financial Assets [Abstract]
Investment in CVE shares	$ 1,416	$ 1,256
Investments in debt securities	566	518
Loans and advances - related parties	114	220
Financial Liabilities [Abstract]
Total debt, excluding finance leases	18,815	14,478
Carrying Amount [Member] | Commodity Contract [Member]
Financial Assets [Abstract]
Commodity derivatives, assets	827	88
Financial Liabilities [Abstract]
Commodity derivatives, liability	858	59
Investment in CVE shares	1,416	1,256
Investments in debt securities	566	518
Loans and advances - related parties	114	220
Total debt, excluding finance leases	22,797	19,106
Commodity Contract [Member]
Financial Assets [Abstract]
Commodity derivatives, assets	827	88
Financial Liabilities [Abstract]
Commodity derivatives, liability	$ 858	$ 59

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss in the Equity Section of the Balance Sheet (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Accumulated Other Comprehensive Loss [Abstract]
Defined Benefit Plans, Beginning Balance			$ (425)
Defined Benefit Plans	$ (35)	$ 31	(169)	$ 13
Defined Benefit Plans, Ending Balance	(256)		(256)
Net Unrealized Gain on Securities, Beginning Balance			2
Net Unrealized Loss on Securities			(1)
Net Unrealized Gain on Securities, Ending Balance	1		1
Foreign Currency Translation, Beginning Balance			(4,795)
Foreign Currency Translation	(238)	190	(73)	(298)
Foreign Currency Translation, Ending Balance	(4,868)		(4,868)
Accumulated Other Comprehensive Income, Beginning Balance			(5,218)
Other Comprehensive Income (Loss), Net of Tax	(203)	$ 159	95	$ (309)
Accumulated Other Comprehensive Income, Ending Balance	$ (5,123)		$ (5,123)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) - Items Reclassified out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Accumulated Other Comprehensive Loss [Abstract]
Defined Benefit Plans	$ 29	$ 30	$ 83	$ 46
Tax expense of defined benefit plans	$ 7	$ 7	$ 22	$ 11

Cash Flow Information (Details)

Cash Flow Information (Details) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020
Cash Payments
Interest		$ 695	$ 591
Income taxes		358	803
Net Sales (Purchases) of Investments
Short-term investments purchased		(5,487)	(9,662)
Short-term investments sold		8,478	8,776
Long-term investments purchased		(228)	(271)
Long-term investments sold		83	68
Net Sales (Purchases) of Investments		2,846	(1,089)
Business Acquisition [Line Items]
Deposit recorded in Cash Flows from Investing - Other		$ 386	$ 31
Shell Enterprises LLC [Member]
Business Acquisition [Line Items]
Deposit recorded in Cash Flows from Investing - Other	$ 475

Employee Benefit Plans - Compon

Employee Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Pension Plans Defined Benefit [Member] | U.S.
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	$ 17		$ 21	$ 56	$ 63
Interest cost	12		17	40	51
Expected return on plan assets	(22)		(21)	(66)	(63)
Amortization of prior service cost (credit)	0		0	0	0
Recognized net actuarial (gain) loss	9		12	36	37
Settlements	28		27	72	28
Curtailments		$ 12		12	0
Special Termination Benefits				9	0
Net periodic benefit cost	44		56	159	116
Pension Plans Defined Benefit [Member] | Int'l (Pension Benefits) [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	15		14	46	41
Interest cost	19		21	59	63
Expected return on plan assets	(30)		(37)	(90)	(108)
Amortization of prior service cost (credit)	0		(1)	0	(1)
Recognized net actuarial (gain) loss	8		5	24	16
Settlements	0		0	0	(1)
Curtailments				0	0
Special Termination Benefits				0	0
Net periodic benefit cost	12		2	39	10
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	0		1	1	2
Interest cost	1		2	3	5
Expected return on plan assets	0		0	0	0
Amortization of prior service cost (credit)	(9)		(7)	(28)	(23)
Recognized net actuarial (gain) loss	0		1	1	1
Settlements	0		0	0	0
Curtailments				0	0
Special Termination Benefits				0	0
Net periodic benefit cost	$ (8)		$ (3)	$ (23)	$ (15)

Employee Benefit Plans - Textua

Employee Benefit Plans - Textual (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Settlements	$ 0		$ 0	$ 0	$ 0
Curtailments				0	0
U.S.
Defined Benefit Plan Disclosure [Line Items]
Expected company contributions	475			475
U.S. | Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contributions				409
Settlements	28		27	72	28
Increase (decrease) in net pension liability				(106)
Curtailments		$ 12		12	0
Int'l (Pension Benefits) [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected company contributions	115			115
Int'l (Pension Benefits) [Member] | Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contributions				104
Settlements	$ 0		$ 0	0	(1)
Curtailments				$ 0	$ 0

Employee Benefit Plans - Discou

Employee Benefit Plans - Discount Rate (Details) - Pension Plans Defined Benefit [Member]	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Expected return on assets	3.40%	5.80%
U.S. | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	2.80%	2.40%
U.S. | Nonqualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	2.30%	1.85%

Employee Benefit Plans - Severa

Employee Benefit Plans - Severance Accrual (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period	$ 24
Accruals	165
Benefit payments	(102)
Balance at end of period	87
Employee Severance [Member] | Short term supplemental unemployment benefits [Member]
Restructuring Cost and Reserve [Line Items]
Balance at end of period	$ 51

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Significant transactions with related parties
Operating revenues and other income	$ 22	$ 21	$ 63	$ 59
Purchases	1	0	5	0
Operating expenses and selling, general and administrative expenses	45	16	135	43
Net interest (income) expense	$ 0	$ (1)	$ (2)	$ (5)

Sales and Other Operating Rev_4

Sales and Other Operating Revenues - Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue from contracts with customers	$ 11,326	$ 4,386	$ 30,708	$ 13,293
Customers within the scope of ASC Topic 606 [Member]
Revenue from contracts with customers	8,880	3,078	23,794	9,908
Physical gas contracts [Member]
Revenue from contracts with customers	2,620	1,280	7,348	3,432
Crude oil product line [Member]
Revenue from contracts with customers	215	100	517	218
Natural Gas Product Line [Member]
Revenue from contracts with customers	2,192	1,042	6,423	2,895
Other Products [Member]
Revenue from contracts with customers	213	138	408	319
Financial Derivative Contracts [Member]
Revenue from contracts with customers	(174)	28	(434)	(47)
Lower 48 Segment | Physical gas contracts [Member]
Revenue from contracts with customers	2,123	1,018	5,934	2,692
Canada Segment [Member] | Physical gas contracts [Member]
Revenue from contracts with customers	266	152	776	452
Europe, Middle East and North Africa [Member] | Physical gas contracts [Member]
Revenue from contracts with customers	$ 231	$ 110	$ 638	$ 288

Sales and Other Operating Rev_5

Sales and Other Operating Revenues - Practical Expedients (Details)	9 Months Ended
	Sep. 30, 2021
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

Sales and Other Operating Rev_6

Sales and Other Operating Revenues - Receivables and Contract Liabilities (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Dec. 31, 2020
Accounts Receivable, Net	$ 4,262,000,000	$ 4,262,000,000	$ 1,827,000,000
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, Remaining Performance Obligation, Expected Timing of Satisfaction, Explanation		For the nine-month period of 2021, we recognized revenue of $62 million in the “Sales and other operating revenues” line on our consolidated income statement. No revenue was recognized during the three-month period ended September 30, 2021. We expect to recognize the contract liabilities as of September 30, 2021, as revenue during 2022.
Change in Contract with Customer, Liability [Abstract]
Contract Liabilities, Beginning Balance		$ 97,000,000
Contractual payments received		7,000,000
Revenue recognized	0	(62,000,000)
Contract Liabilities, Ending Balance	42,000,000	42,000,000
Contract with Customer Liability [Abstract]
Current liabilities	$ 42,000,000	$ 42,000,000

Segment Disclosures - Textual (

Segment Disclosures - Textual (Details)	9 Months Ended
	Sep. 30, 2021
Segment Disclosures and Related Information [Abstract]
Number of Operating Segments	6

Segment Disclosures and Relat_3

Segment Disclosures and Related Information - Sales (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Sales and other operating revenues	$ 11,326	$ 4,386	$ 30,708	$ 13,293
Natural Gas [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	4,099	1,509	11,422	4,354
Natural Gas Liquids Reserves [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	414	129	976	364
Crude Oil [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	6,433	2,321	16,725	6,981
Other Products [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	380	427	1,585	1,594
U.S.
Segment Reporting Information [Line Items]
Sales and other operating revenues	8,963	3,148	23,978	9,209
Australia
Segment Reporting Information [Line Items]
Sales and other operating revenues	0	0	0	605
CA
Segment Reporting Information [Line Items]
Sales and other operating revenues	561	328	1,573	826
China
Segment Reporting Information [Line Items]
Sales and other operating revenues	193	161	519	374
Indonesia
Segment Reporting Information [Line Items]
Sales and other operating revenues	231	167	634	503
Libya
Segment Reporting Information [Line Items]
Sales and other operating revenues	313	6	833	50
Malaysia
Segment Reporting Information [Line Items]
Sales and other operating revenues	249	148	727	447
Norway
Segment Reporting Information [Line Items]
Sales and other operating revenues	678	358	1,708	1,046
United Kingdom
Segment Reporting Information [Line Items]
Sales and other operating revenues	136	68	729	224
Other foreign Countries
Segment Reporting Information [Line Items]
Sales and other operating revenues	2	2	7	9
Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	11,326	4,386	30,708	13,293
Alaska [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	1,395	864	3,946	2,396
Alaska [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	1,395	834	3,946	2,385
Alaska [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	0	(30)	0	(11)
Lower 48 [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	7,566	2,323	19,968	6,859
Lower 48 [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	7,565	2,314	19,963	6,812
Lower 48 [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	(1)	(9)	(5)	(47)
Canada [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	967	348	2,636	1,026
Canada [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	561	328	1,573	826
Canada [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	(406)	(20)	(1,063)	(200)
Europe, Middle East and North Africa [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	1,127	432	3,270	1,320
Asia Pacific [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	673	477	1,880	1,930
Other International [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	1	1	4	5
Corporate and Other [Member] | Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Sales and other operating revenues	$ 4	$ 0	$ 72	$ 15

Segment Disclosures and Relat_4

Segment Disclosures and Related Information - Net Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	$ 2,379	$ (450)	$ 5,452	$ (1,929)
Alaska [Member] | Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	405	(16)	935	(76)
Lower 48 [Member] | Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	1,631	(78)	3,274	(880)
Canada [Member] | Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	155	(75)	267	(270)
Europe, Middle East and North Africa [Member] | Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	241	92	601	318
Asia Pacific [Member] | Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	257	25	749	945
Other International [Member] | Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	(97)	(8)	(106)	14
Corporate and Other [Member] | Corporate, Non-Segment [Member]
Net Income (Loss) Attributable to ConocoPhillips [Abstract]
Consolidated net income (loss) attributable to ConocoPhillips	$ (213)	$ (390)	$ (268)	$ (1,980)

Segment Disclosures and Relat_5

Segment Disclosures and Related Information - Assets (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Assets [Abstract]
Total Assets	$ 87,304	$ 62,618
Alaska [Member] | Operating Segments [Member]
Assets [Abstract]
Total Assets	14,617	14,623
Lower 48 [Member] | Operating Segments [Member]
Assets [Abstract]
Total Assets	33,200	11,932
Canada [Member] | Operating Segments [Member]
Assets [Abstract]
Total Assets	6,797	6,863
Europe, Middle East and North Africa [Member] | Operating Segments [Member]
Assets [Abstract]
Total Assets	8,956	8,756
Asia Pacific [Member] | Operating Segments [Member]
Assets [Abstract]
Total Assets	10,657	11,231
Other International [Member] | Operating Segments [Member]
Assets [Abstract]
Total Assets	1	226
Corporate and Other [Member] | Corporate, Non-Segment [Member]
Assets [Abstract]
Total Assets	$ 13,076	$ 8,987

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	Feb. 08, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Business Acquisition [Line Items]
Income tax provision		$ (1,203)	$ 62	$ (2,924)	$ 171
Adjustment to valuation allowances: increase (decrease)		$ (4)	$ 33	$ (156)	$ 264
Effective tax rate		34.00%	12.00%	35.00%	8.00%
Concho Resources Incorporated [Member]
Business Acquisition [Line Items]
Unrecognized Tax Benefits, Increase Resulting from Acquisition				$ 150
Reversal of deferred tax assets				(1,100)
Income tax provision	$ (75)			$ (75)