ConocoPhillips (COP) 10-K 18 Feb 20 2019 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2019	Jan. 31, 2020	Jun. 28, 2019
Document And Entity Information [Abstract]
Entity Central Index Key	0001163165
Amendment Flag	false
Entity File Number	001-32395
Entity Registrant Name	ConocoPhillips
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
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 Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
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 Public Float			$ 67.7
Entity Common Stock, Shares Outstanding		1,081,132,415
Entity Listings [Line Items]
Documents Incorporated By Reference [Text Block]	Documents incorporated by reference: Portions of the Proxy Statement for the Annual Meeting of Stockholders to be
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
Seven Percent Debentures Due Twenty Twenty-nine [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 ($)		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018		Dec. 31, 2017
Revenues and Other Income
Revenue from contracts with customers	[1]	$ 32,567,000,000	$ 36,417,000,000		$ 29,106,000,000
Equity in earnings of affiliates		779,000,000	1,074,000,000		772,000,000
Gain on dispositions		1,966,000,000	1,063,000,000		2,177,000,000
Other Income		1,358,000,000	173,000,000		529,000,000
Total Revenues and Other Income		36,670,000,000	38,727,000,000		32,584,000,000
Cost and expenses [Abstract]
Purchased commodities		11,842,000,000	14,294,000,000		12,475,000,000
Production and operating expenses		5,322,000,000	5,213,000,000		5,162,000,000
Selling, general and administrative expenses		556,000,000	401,000,000	[2]	427,000,000	[2]
Exploration expenses		743,000,000	369,000,000	[2]	934,000,000	[2]
Depreciation, depletion and amortization		6,090,000,000	5,956,000,000		6,845,000,000
Impairments		405,000,000	27,000,000		6,601,000,000
Taxes other than income taxes		953,000,000	1,048,000,000		809,000,000
Accretion on discounted liabilities		326,000,000	353,000,000		362,000,000
Interest and debt expense		778,000,000	735,000,000		1,098,000,000
Foreign currency transaction (gains) losses		66,000,000	(17,000,000)		35,000,000
Other Expense		65,000,000	375,000,000	[2]	451,000,000	[2]
Total Costs and Expenses		27,146,000,000	28,754,000,000		35,199,000,000
Income (loss) before income taxes		9,524,000,000	9,973,000,000		(2,615,000,000)
Income Tax Expense (Benefit)		2,267,000,000	3,668,000,000		(1,822,000,000)
Net income (loss)		7,257,000,000	6,305,000,000		(793,000,000)
Less: net income attributable to noncontrolling interests		(68,000,000)	(48,000,000)		(62,000,000)
Net income (loss) attributable to ConocoPhillips		$ 7,189,000,000	$ 6,257,000,000		$ (855,000,000)
Net Income (Loss) Attributable to ConocoPhillips Per Share of Common Stock (dollars)
Earnings Per Share, Basic		$ 6.43	$ 5.36		$ (0.70)
Earnings per Share, Diluted		$ 6.40	$ 5.32		$ (0.70)
Average Common Shares Outstanding (in thousands)
Basic		1,117,260	1,166,499		1,221,038
Diluted		1,123,536	1,175,538		1,221,038
[1]	<div>(1)Sales and other operating revenues are attributable to countries based on the location of the selling operation.</div>
[2]	See Notes to Consolidated Financial Statements.

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated Statement of Comprehensive Income
Net income (loss)		$ 7,257	$ 6,305	$ (793)
Defined benefit plans
Prior service (cost) credit arising during the period		0	(7)	2
Amortization of prior service cost (credit) included in income		(35)	(40)	(38)
Net change during the period		(35)	(47)	(36)
Net actuarial gain (loss) arising during the period		(55)	(150)	19
Reclassification adjustment for amortization of prior service credit included in net income (loss)		146	279	247
Net change during the period		91	129	266
Nonsponsored plans	[1]	(3)	(1)	(2)
Income taxes on defined benefit plans		(2)	(42)	(81)
Defined benefit plans, net of tax		51	39	147
Unrealized holding gain on securities, before and after tax		0	0	(58)
OCI Unrealized loss on securities, net of tax		0	0	(58)
Foreign currency translation adjustments		699	(645)	586
Income taxes on foreign currency translation adjustments		(4)	3	0
Foreign currency translation adjustments, net of tax		695	(642)	586
Other comprehensive income (loss), net of tax		746	(603)	675
Comprehensive income (loss)		8,003	5,702	(118)
Less: comprehensive income attributable to noncontrolling interests		(68)	(48)	(62)
Comprehensive Income (Loss) Attributable to ConocoPhillips		$ 7,935	$ 5,654	$ (180)
[1]	<div>Plans for which ConocoPhillips is not the primary obligor—primarily those administered by equity affiliates.</div>

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($)	Dec. 31, 2019		Dec. 31, 2018
Assets
Cash and cash equivalents	$ 5,088,000,000		$ 5,915,000,000
Short-term Investments	3,028,000,000		248,000,000
Accounts and notes receivable (net of allowance of $13 million in 2019 and $25 million in 2018)	3,267,000,000		3,920,000,000
Accounts and notes receivable-related parties	134,000,000		147,000,000
Investment in Cenovus Energy	2,111,000,000		1,462,000,000
Inventories	1,026,000,000		1,007,000,000
Prepaid expenses and other current assets	2,259,000,000		575,000,000
Total Current Assets	16,913,000,000		13,274,000,000
Investments and long-term receivables	8,687,000,000		9,329,000,000
Loans and advances-related parties	219,000,000		335,000,000
Net properties, plants and equipment (net of accumulated depreciation, depletion and amortization of $55,477 million in 2019 and $64,899 million in 2018)	42,269,000,000		45,698,000,000
Other assets	2,426,000,000		1,344,000,000
Total Assets	70,514,000,000		69,980,000,000
Liabilities
Accounts payable	3,176,000,000		3,863,000,000
Accounts payable-related parties	24,000,000		32,000,000
Short-term debt	105,000,000		112,000,000
Accrued income and other taxes	1,030,000,000		1,320,000,000
Employee benefit obligations	663,000,000		809,000,000
Other accruals	2,045,000,000		1,259,000,000
Total Current Liabilities	7,043,000,000		7,395,000,000
Long-term debt	14,790,000,000		14,856,000,000
Long-term asset retirement obligations and accrued environmental costs	5,352,000,000		7,688,000,000
Deferred taxes Included in long-term liabilities	4,634,000,000		5,021,000,000
Employee benefit obligations	1,781,000,000		1,764,000,000
Other liabilities and deferred credits	1,864,000,000		1,192,000,000
Total Liabilities	35,464,000,000		37,916,000,000
Equity
Common stock (2,500,000,000 shares authorized at $.01 par value)	18,000,000		18,000,000
Capital in excess of par	46,983,000,000		46,879,000,000
Treasury stock (at cost: shares; 2019-710,783,814 shares; 2018-653,288,213 shares)	(46,405,000,000)		(42,905,000,000)
Accumulated other comprehensive income (loss)	(5,357,000,000)		(6,063,000,000)
Retained earnings	39,742,000,000		34,010,000,000
Total Common Stockholders' Equity	34,981,000,000		31,939,000,000
Noncontrolling interests	69,000,000		125,000,000
Total Equity	35,050,000,000	[1]	32,064,000,000
Total Liabilities and Equity	$ 70,514,000,000		$ 69,980,000,000
[1]

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Consolidated Balance Sheet [Abstract]
Allowance for accounts and notes receivable	$ 13	$ 25
Accumulated depreciation, depletion and amortization	$ 55,477	$ 64,899
Common stock, shares authorized	2,500,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares issued	1,795,652,203	1,791,637,434
Treasury stock, shares	710,783,814	653,288,213

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Cash Flows From Operating Activities
Net income (loss)		$ 7,257		$ 6,305		$ (793)
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation, depletion and amortization		6,090		5,956		6,845
Impairments		405		27		6,601
Dry hole costs and leasehold impairments related to exploration only		421		95		566
Accretion on discounted liabilities		326		353		362
Deferred taxes		(444)		283		(3,681)
Undistributed equity earnings		594		152		(232)
Gain on dispositions		(1,966)		(1,063)		(2,177)
Other		(1,000)		191		(429)
Working capital adjustments
Decrease (increase) in accounts and notes receivable		505		235		(886)
Decrease (increase) in inventories		(67)		86		(55)
Decrease (increase) in prepaid expenses and other current assets		37		(55)		69
Increase (decrease) in accounts payable		(378)		(52)		265
Increase (decrease) in taxes and other accruals		(676)		421		622
Net Cash Provided by Operating Activities		11,104		12,934		7,077
Cash Flows From Investing Activities
Capital expenditures and investments		(6,636)		(6,750)		(4,591)
Increase (Decrease) In Capital Accrual Associated With Investing Activities		(103)		(68)		132
Proceeds from asset dispositions		3,012		1,082		13,860
Net Sales (Purchases) of Investments		(2,910)		1,620		(1,790)
Long-term advances/loans-related parties		0		0		0
Proceeds from Collection of Long-term Loans to Related Parties		127		119		115
Other		(108)		154		36
Net Cash Provided by (Used in) Investing Activities		(6,618)		(3,843)		7,762
Cash Flows From Financing Activities
Issuance of debt		0		0		0
Repayment of debt		(80)		(4,995)		(7,876)
Issuance of company common stock		(30)		121		(63)
Repurchase of company common stock		(3,500)		(2,999)		(3,000)
Dividends paid		(1,500)		(1,363)		(1,305)
Other		(119)		(123)		(112)
Net Cash Provided by (Used in) Financing Activities		(5,229)		(9,359)		(12,356)
Effect of Exchange Rate Changes on Cash and Cash Equivalents and Restricted Cash		(46)		(117)		232
Net Change in Cash and Cash Equivalents and Restricted Cash Increase (Decrease)		(789)		(385)		2,715
Cash and Cash Equivalents and Restricted Cash at beginning of period		6,151	[1]	6,325	[1]	3,610
Cash and Cash Equivalents and Restricted Cash at end of period	[1]	$ 5,362		6,151		6,325
Restatement Adjustment [Member]
Cash Flows From Financing Activities
Cash and Cash Equivalents and Restricted Cash at beginning of period				$ 6,536
Cash and Cash Equivalents and Restricted Cash at end of period						$ 6,536
[1]	See Notes to Consolidated Financial Statements.

Consolidated Statement of Cas_2

Consolidated Statement of Cash Flows (Parenthetical) - Restatement Adjustment [Member] - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Other Assets [Member]
Restricted Cash	$ 184	$ 236
Prepaid Expenses and Other Current Assets [Member]
Restricted Cash	$ 90

Consolidated Statement of Chang

Consolidated Statement of Changes in Equity - USD ($) $ in Millions	Total		Common Stock [Member]	Capital in excess of par	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2016	$ 35,226		$ 18	$ 46,507	$ (36,906)	$ (6,193)	$ 31,548	$ 252
Net income (loss)	(793)						(855)	62
Other comprehensive income (loss)	675					675
Dividends paid	(1,305)						(1,305)
Treasury Stock Value Acquired Cost Method	(3,000)				(3,000)
Distributions to noncontrolling interests and other	(120)							(120)
Distributed under benefit plans	115			115
Other	3						3
Ending Balance at Dec. 31, 2017	30,801		18	46,622	(39,906)	(5,518)	29,391	194
Net income (loss)	6,305						6,257	48
Other comprehensive income (loss)	(603)					(603)
Dividends paid	(1,363)						(1,363)
Treasury Stock Value Acquired Cost Method	(2,999)				(2,999)
Distributions to noncontrolling interests and other	(121)							(121)
Distributed under benefit plans	257			257
Changes in Accounting Principles	(220)					58	(278)
Other	7						3	4
Ending Balance at Dec. 31, 2018	32,064		18	46,879	(42,905)	(6,063)	34,010	125
Net income (loss)	7,257						7,189	68
Other comprehensive income (loss)	746					746
Dividends paid	(1,500)						(1,500)
Treasury Stock Value Acquired Cost Method	(3,500)				(3,500)
Distributions to noncontrolling interests and other	(128)							(128)
Distributed under benefit plans	104			104
Changes in Accounting Principles	0					(40)	40
Other	7						3	4
Ending Balance at Dec. 31, 2019	$ 35,050	[1]	$ 18	$ 46,983	$ (46,405)	$ (5,357)	$ 39,742	$ 69
[1]

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 1.34	$ 1.16	$ 1.06

Accounting Policies

Accounting Policies	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Accounting Policies	Note 1—Accounting Policies ■ Consolidation Principles and Investments —Our consolidated financial statements of majority-owned, controlled subsidiaries beneficiary. ability to exert significant influence over the affiliates’ have the ability to exert significant influence, investment does not have a readily determinable cost minus impairment, plus or minus observable similar investment of the same issuer. gas plants and terminals are consolidated on a proportionate generally carried at cost. We manage our operations through six operating segments, defined by geographic 48, Canada, Europe and North Africa, Asia Pacific additional information, see Note 25—Segment ■ Foreign Currency Translation —Adjustments resulting from the process of translating functional currency financial statements into comprehensive loss in common stockholders’ equity. included in current earnings. currency. ■ Use of Estimates —The preparation of financial statements generally accepted in the U.S. requires management reported amounts of assets, liabilities, liabilities. ■ Revenue Recognition —Revenues associated with the sales of crude NGLs and other items are recognized at the point In evaluating when a customer has control of the title and physical delivery has occurred, whether ownership, and whether the customer has accepted are typically sold at prevailing market prices. deliveries (performance obligations) in the efforts to transfer control of current period deliveries to the expect to be entitled to in exchange for the related Payment is typically due within 30 days or less. Revenues associated with transactions commonly of inventory with the same counterparty are entered and reported net (i.e., on the same income statement ■ Shipping and Handling Costs —We typically incur shipping and handling costs prior to control transferring to the customer and account for these shipping and handling costs in production and operating Transportation costs related to marketing activities are recorded in billed to customers are treated as a component of the revenue when the customer obtains control. ■ Cash Equivalents —Cash equivalents are highly liquid, short-term convertible to known amounts of cash and have purchase. ■ Short-Term Investments —Short-term investments include investments marketable securities (commercial paper and government accrued interest and have original maturities remaining maturities are within one year. for sale debt securities which are carried at fair investments when they have remaining maturities ■ Long-Term Investments in Debt Securities —Long-term investments in debt securities financial instruments classified as available for sale one year as of the balance sheet date. and long-term receivables” line of our consolidated ■ Inventories —We have several valuation methods for our various types of inventories use the following methods for each type of inventory. are recorded at cost using the LIFO basis. the aggregate. permanent adjustments to the LIFO cost basis. current revenues. product to its existing condition and location, development costs. well equipment, are valued using various methods, FIFO method, consistent with industry practice. ■ Fair Value Measurements —Assets and liabilities measured at fair value within the fair value hierarchy are categorized into observability of the inputs employed in the measurement. markets for identical assets or liabilities. included within Level 1 for the asset or liability, either directly or indirectly inputs. to observable related market data or our assumptions ■ Derivative Instruments —Derivative instruments are recorded on the balance right of offset exists and certain other criteria are met, counterparty are netted on the balance sheet and the derivative assets and derivative liabilities, Recognition and classification of the gain or loss fair value depends on the purpose for issuing or not accounted for as hedges are recognized immediately ■ Oil and Gas Exploration and Development —Oil and gas exploration and development accounted for using the successful efforts method of Property Acquisition Costs —Oil and gas leasehold acquisition costs are the balance sheet caption PP&E. experience and management’s judgment. to be classified as proved, the associated leasehold Exploratory Costs —Geological and geophysical costs and the undeveloped properties are expensed as incurred. “suspended,” on the balance sheet pending further reserves have been found. are expensed as dry holes. gas, the well costs remain capitalized on the balance reserves and the economic and operating viability exploratory discoveries, it is not unusual to sheet for several years while we perform additional potential oil and gas field or while we seek government or seek environmental permitting. projects are moved into the development phase, reserves. Management reviews suspended well balances quarterly, continuously monitors additional appraisal drilling and seismic work, when it judges the potential field does not Suspended Wells and Other Exploration Expenses, for additional information Development Costs —Costs incurred to drill and equip development development wells, are capitalized. Depletion and Amortization —Leasehold costs of producing properties of-production method based on estimated proved development costs is based on the unit-of-production and gas reserves. ■ Capitalized Interest —Interest from external borrowings is expected construction period of one year or longer. underlying asset and is amortized over the useful assets. ■ Depreciation and Amortization —Depreciation and amortization of PP&E properties and certain pipeline and LNG assets pattern), are determined by the unit-of-production method. PP&E are determined by either the individual-unit-straight-line (for those individual units that are highly integrated ■ Impairment of Properties, Plants and Equipment —PP&E used in operations are assessed for impairment whenever changes in facts and circumstances the future cash flows expected to be generated following updates to corporate planning assumptions. asset may not be recovered, the asset is monitored changes to significant assumptions such as prices, If, upon review, the sum of the undiscounted before-tax cash flows is less asset group, the carrying value is written down to depreciation provisions and reported as impairments impairment is made. there are identifiable cash flows that are largely independent generally on a field-by-field basis for E&P assets. for long-lived assets, the fair value of impaired assets of expected future cash flows using discount rates market participants or based on a multiple of operating transactions of similar assets where possible. within one year are accounted for at the lower value determined using a binding negotiated price, flows as previously described. The expected future cash flows used for impairment on estimated future production volumes, prices review. including any development expenditures necessary probable and possible reserves exist, an appropriate included in the impairment calculation. ■ Impairment of Investments in Nonconsolidated —Investments in nonconsolidated entities assessed for impairment whenever changes in occurred and annually following updates to corporate judgmentally determined to be other than temporary, the carrying value of the to fair value. upon the present value of expected future cash those used by principal market participants, investee, if appropriate. ■ Maintenance and Repairs —Costs of maintenance and repairs, which are are expensed when incurred. ■ Property Dispositions —When complete units of depreciable property accumulated depreciation are eliminated, of our consolidated income statement. disposed of or retired which do not significantly and salvage value is charged or credited to accumulated ■ Asset Retirement Obligations and Environmental Costs —The fair value of legal obligations to retire and remove long-lived assets are recorded in when the asset is installed at the production location). capitalize this cost by increasing the carrying amount estimate of this liability changes, we will record an the liability is increased for the change in its present depreciated over the useful life of the related asset. no longer producing are recorded as a credit as a credit to DD&A, if the asset had not been previously Note 10—Asset Retirement Obligations and Accrued Environmental expenditures are expensed or capitalized, Expenditures relating to an existing condition economic benefit, are expensed. undiscounted basis (unless acquired in a purchase basis) when environmental assessments or cleanups estimated. their receipt is probable and estimable. ■ Guarantees —The fair value of a guarantee is determined guarantee is given. the guarantee. the facts and circumstances surrounding each type indefinite, we reverse the liability when we have or amortize it over an appropriate time time. the guarantee. separate liability if it is reasonably estimable, reverse the fair value liability only when there ■ Share-Based Compensation —We recognize share-based compensation expense over the shorter of the service period (i.e., the stated period of time required start of the service period and ending when an elected to recognize expense on a straight-line the award was granted with ratable or cliff vesting. ■ Income Taxes —Deferred income taxes are computed using temporary differences between the financial reporting basis except for deferred taxes on income and temporary adjustment considered to be permanently reinvested joint ventures. taxes. related to unrecognized tax benefits are reflected ■ Taxes Collected from Customers and Remitted to Governmental Authorities —Sales and value- added taxes are recorded net. ■ Net Income (Loss) Per Share of Common Stock —Basic net income (loss) per share of common stock is calculated based upon the daily weighted-average year. calculation includes fully vested stock and unit common stock, along with an adjustment to unit awards that are considered participating includes unvested stock, unit or option awards granted unexercised stock options, but only to the extent these under the treasury-stock method. per share, does not assume conversion or exercise Treasury stock is excluded from the daily weighted-average number both calculations.

Change in Accounting Priniciple

Change in Accounting Priniciples	12 Months Ended
	Dec. 31, 2019
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Standards [Text Block]	Note 2—Changes in Accounting Principles We adopted the provisions of FASB ASU No. 2016-02, “Leases,” (ASC Topic 842) and its amendments, beginning January 1, 2019. requirements for leasing arrangements, supersedes “Leases” (ASC Topic 840), and requires lessees to recognize substantially on the balance sheet. requirements for recognition, measurement, presentation lessees and lessors. We adopted ASC Topic Transition Method, which permits us to apply the provisions existing at or entered into after January 1, 2019, prior to January 1, 2019 under the historical the package of optional transition-related practical forward certain historical conclusions reached classification, and the accounting treatment and liabilities on our consolidated balance sheet months or less. The primary impact of applying ASC Topic 842 is the initial recognition 998 corresponding right-of-use assets on our consolidated as operating leases under ASC Topic 840, as well as enhanced disclosure of our leasing accounting treatment for finance leases remains retained earnings or other components of equity Topic 842 did not impact the presentation of our consolidated income statement See Note 17—Non-Mineral Leases for additional We adopted the provisions of FASB ASU No. 2018-02, “Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income,” from accumulated other comprehensive income Tax Cuts and Jobs Act, eliminating the stranded tax effects. sheet at January 1, 2019 for the adoption of Millions of Dollars Note 26—New Accounting Standards In June 2016, the FASB issued ASU No. 2016-13, “Measurement of Credit Losses on (ASU No. 2016-13), which sets forth the current impairment model for certain financial instruments ASU is effective for interim and annual periods beginning adopt ASU No. 2016-13 using a modified retrospective impact

Variable Interest Entities (VIE

Variable Interest Entities (VIEs)	12 Months Ended
	Dec. 31, 2019
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]
Variable Interest Entity Disclosure [Text Block]	Note 3—Variable Interest Entities We hold variable interests in VIEs for which there are existing arrangements that provide additional forms of subordinated financial support. beneficiary, these entities have not been consolidated in our financial statements. Marine Well Containment Company, LLC (MWCC) We have a 10 because MWCC is a limited liability company VIE, as it has entered into arrangements that provide We are not the primary beneficiary and do not consolidate MWCC because we share business and operation of the company and to economic performance with nine other unaffiliated Based on inputs related to the fair value of MWCC carrying value of our equity method investment 30 impairment of $ 95 income statement. For additional information the book value of our equity method investment 24 financial support to MWCC other than amounts we have no requirement to provide liquidity Australia Pacific LNG Pty Ltd (APLNG) We hold a 37.5 primary beneficiary because we share, with APLNG that most significantly impacts its and account for this entity as an equity method certain guarantees that provide APLNG with additional information see Note 12—Guarantees.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2019
Inventories [Abstract]
Inventories	Note 4—Inventories Inventories at December 31 were: Millions of Dollars 2019 2018 Crude oil and natural gas $ 472 432 Materials and supplies 554 575 $ 1,026 1,007 Inventories valued on the LIFO basis totaled 286 292 respectively. approximately $ 155 75

Assets Held for Sale, Sold or A

Assets Held for Sale, Sold or Acquired	12 Months Ended
	Dec. 31, 2019
Disposal Group Not Discontinued Operation Disposal Disclosures [Abstract]
Long Lived Assets Held For Sale [Text Block]	Note 5—Asset Acquisitions and Dispositions All gains or losses on asset dispositions dispositions” line on our consolidated income From Investing Activities” section of our consolidated 2019 Assets Held for Sale In October 2019, we entered into an agreement to sell operations to Santos for $ 1.39 In addition, we will receive a payment of $ 75 development project. 37.5 Field, our 56.9 40 the Greater Poseidon Fields, and our 50 approximately $ 0.6 1.2 0.3 working capital, offset by $ 0.7 0.2 for sale criteria in the fourth quarter, and as of December 31, 2019 1.2 “Prepaid expenses and other current assets” and $ 0.7 consolidated balance sheet. $ 372 364 317 respectively. approvals and other specific conditions precedent. reported within our Asia Pacific and Middle East In the fourth quarter of 2019, we signed an agreement 380 million, plus customary adjustments, carrying value to fair value, in the fourth quarter 379 tax for developed properties and exploration expenses 7 undeveloped properties. 390 million, which consisted primarily of $ 426 34 assets met held for sale criteria in the fourth quarter, and as of December 426 million of PP&E to “Prepaid expenses and other 34 accruals” on our consolidated balance sheet. including the $386 million of impairments noted 372 12 December 31, 2019 and 2017, for the year ended December 31, 2018 was $ 35 other specific conditions precedent and is expected operations are reported within our Lower 48 segment. Assets Sold In January 2019, we entered into agreements to sell 12.4 LNG Terminal and Golden Pass Pipeline. obligations for retaining use of the facilities. before-tax impairment of $ 60 of affiliates” line on our consolidated income statement. Results of operations for these assets are reported in Measurement for additional information. In April 2019, we entered into an agreement to sell Limited for $ 2.675 On September 30, 2019, we completed the sale for 2.2 1.7 before-tax and $ 2.1 sold indirectly held our exploration and production carrying value was approximately $ 0.5 1.6 0.5 cumulative foreign currency translation adjustments, 0.3 1.8 billion of ARO and negative $ 0.1 subsidiaries sold were $ 0.4 0.9 0.3 and 2017, segment. In the second quarter of 2019, we recognized an 52 our 30 350 Greater Sunrise Fields were included in our Asia In the fourth quarter of 2019, we sold our interests 16 million and recognized a before-tax gain of $ 82 of $ 4 70 our Lower 48 segment. Planned Dispositions In January 2020, we entered into an agreement to sell 48 segment for $ 186 2020 and the transaction is expected to be completed on the sale. 2018 Assets Sold In the first quarter of 2018, we completed the sale of proceeds of $ 112 No completed the sale of a package of largely undeveloped acreage $ 105 no noncash exchange of undeveloped acreage in value resulting in the recognition of a $ 56 packages of undeveloped acreage in the Lower 162 recognized gains of approximately $ 140 On October 31, 2018, we completed the sale of 196 million after customary adjustments and recognized 5 87 million in 2018 and $ 572 time of the disposition, our interest in Barnett had a 201 250 million of PP&E and $ 49 including both the impairments and loss on disposition 59 566 years 2018 and 2017, respectively. On December 18, 2018, we completed the sale of 16.5 7.5 interest in the field. Kuparuk Area in Alaska, including their 38 percent Assets). 1,743 customary adjustments which resulted in net 253 Field had a net carrying value of approximately 1,028 1,553 PP&E, $ 485 59 $ 715 Field, including the recognized gain, were $ 748 Clair Field was $ 0.4 within our Europe and North Africa segment and Acquisitions In May 2018, we completed the acquisition of 22 North Slope of Alaska, as well as its interest 386 customary adjustments. recognition of approximately $ 297 114 PP&E, $ 20 14 59 included in our Alaska segment. As discussed in the Clair Field transaction with BP 2018. 1,490 comprised of the fair value of $ 1,743 interest in the Clair Field, reduced by the net proceeds approximately $ 1.9 42 15 investments, $ 374 100 are included in our Alaska segment. 2017 Assets Sold On May 17, 2017, we completed the sale of our Lake (FCCL) Partnership, as well as the majority Consideration for the transaction was $ 11.0 208 Energy common shares and a five-year uncapped contingent $ 1.96 9.41 The contingent payment, calculated and paid on a quarterly basis, is $6 million CAD for every $1 CAD by which the WCS quarterly average crude price exceeds $52 CAD per barrel. on dispositions” on our consolidated income statement. with FCCL of $ 197 26 producing properties for 2017. 114 million and $ 95 At closing, the carrying value of our equity investment 8.9 interest in the western Canada gas assets was $ 1.9 2.6 offset by AROs of $ 585 100 of $ 2.1 Both FCCL and the western Canada gas assets For more information on the Canada disposition Investment in Cenovus Energy, Note 15—Fair Value Measurement, and Note 20—Accumulated Other Comprehensive Loss. In July 2017, we completed the sale of our interests Company for $ 2.5 $ 22 The transaction includes a contingent payment of up to $300 million. The six-year contingent payment, effective beginning January 1, 2018, is due annually for the periods in which the monthly U.S. Henry Hub price is at or above $3.20 per MMBTU. payments of $ 28 No recorded an impairment of $ 3.3 fair value. $ 2.5 2.9 406 tax loss associated with our interests in the San Juan million loss on disposition noted above, was $ 3.2 in our Lower 48 segment. In September 2017, we completed the sale of our 178 customary adjustments and recognized a loss on 28 carrying value of our interest was $ 206 279 72 of AROs. Panhandle properties of $ 14

Investments, Loans and Long-Ter

Investments, Loans and Long-Term Receivables	12 Months Ended
	Dec. 31, 2019
Investments, Loans and Long-Term Receivables and Joint Venture Acquisition Obligation [Abstract]
Investments, Loans and Long-Term Receivables	Note 6—Investments, Loans and Long-Term Receivables Components of investments, loans and long-term Millions of Dollars 2019 2018 Equity investments $ 8,234 9,005 Loans and advances—related parties 219 335 Long-term receivables 243 238 Long-term investments in debt securities 133 - Other investments 77 86 $ 8,906 9,664 Equity Investments Affiliated companies in which we had a significant APLNG— 37.5 37.5 25 to produce CBM from the Bowen and Surat basins in Queensland, Australia, LNG. Qatar Liquefied Gas Company Limited (3) (QG3)—30 percent owned Petroleum ( 68.5 1.5 Qatar’s North Field, as well as exports LNG. Summarized 100 percent earnings information combined, was as follows: Millions of Dollars 2019 2018 2017 Revenues $ 11,310 11,654 11,554 Income (loss) before income taxes 3,726 3,660 (2,875) Net income (loss) 3,085 3,244 (1,431) Summarized 100 percent balance sheet information combined, was as follows: Millions of Dollars 2019 2018 Current assets $ 3,289 3,285 Noncurrent assets 38,905 41,563 Current liabilities 2,603 2,625 Noncurrent liabilities 22,168 23,874 Our share of income taxes incurred directly affiliates, and as such is not included in income taxes At December 31, 2019, retained earnings included 32 affiliated companies. 1,378 1,226 605 in 2019, 2018 and 2017, APLNG APLNG is focused on CBM production from the the domestic gas market and on LNG processing to CBM resources in Australia and enhances our two long-term sales and purchase agreements, targeting the Asia Pacific markets. APLNG’s production and pipeline system, while we operate the LNG APLNG executed project financing agreements 8.5 billion project finance facility was initially composed Export-Import Bank of the United States for approximately 2.9 approximately $ 2.7 approximately $ 2.9 made its first principal and interest repayment bi-annual until March 2029. APLNG made a voluntary repayment of $ 1.4 At the same time, APLNG obtained a United 1.4 APLNG made its first interest payment related to scheduled to commence in September 2023, bi-annual During the first quarter of 2019, APLNG refinanced 3.2 transactions. 2.6 APLNG made its first principal and interest bi-annual facility until March 2028. 0.6 billion. commence in September 2023, with bi-annual In conjunction with the $3.2 billion debt obtained finance debt, APLNG made voluntary repayments 2.2 1.0 and international commercial banks and the Export-Import At December 31, 2019, a balance of $ 6.7 for additional information. During the first half of 2017, the outlook for crude reduced price outlooks, the estimated fair carrying value. concluded in the second quarter of 2017 the impairment ASC Topic 323, “Investments—Equity Method and Joint Ventures,” and the recognition of an impairment of our investment to fair value was necessary. 2,384 after-tax impairment in our second quarter 2017 discounted cash flow model using estimated of exchanges (short-term) and pricing service exchange rates provided by a third party, and a discount rate believed to be principal market participants. income statement. At December 31, 2019, the carrying value of 7,228 The historical cost basis of our 37.5 6,751 resulting in a basis difference of $ 477 associated with PP&E and subject to amortization, individual exploration and production license areas production. exploration license area will periodically be reviewed required, would result in acceleration of basis gas from each license, we amortize the basis method. expense of $ 36 44 100 difference on currently producing licenses. Distributions from APLNG commenced in FCCL FCCL Partnership, a Canadian upstream 50/50 general bitumen in the Athabasca oil sands in northeastern operator and managing partner of FCCL. On May 17, 2017, we completed the sale of our well as the majority of our western Canada gas within this footnote includes our historical Canada disposition and our investment in Cenovus and Note 7—Investment in Cenovus Energy. QG3 QG3 is a joint venture that owns an integrated financing, with a current outstanding balance 335 Term Receivables.” excluding the project financing, was $ 797 Pass LNG Terminal and affiliated Golden Pass Pipeline near Sabine Pass, Texas, intended to provide us with terminal and pipeline capacity for the receipt, previously held a 12.4 percent interest in Golden those interests in the second quarter of 2019 while from QG3 is being sold to markets outside of Acquisitions and Dispositions. Loans and Long-Term Receivables As part of our normal ongoing business operations numerous agreements with other parties to pursue and long-term receivables to certain affiliated and non-affiliated transferred or seller financing is provided to the agreement. decrease as interest and principal payments are interest rate. balance may not be fully recovered. At December 31, 2019, significant loans to affiliated QG3. 30 participants in the project are affiliates of Qatar Petroleum $ 4.0 1.3 1.5 billion from commercial banks, and $ 1.2 substantially the same terms as the ECA and commercial achieved financial completion and all project loan facilities Semi-annual repayments began in January 2011 and will extend through July The long-term portion of these loans is included consolidated balance sheet, while the short-term

Investment in Cenovus Energy

Investment in Cenovus Energy	12 Months Ended
	Dec. 31, 2019
Investment in Cenovus Energy [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	Note 7—Investment in Cenovus Energy On May 17, 2017, we completed the sale of our 50 well as the majority of our western Canada gas included 208 16.9 and outstanding Cenovus Energy common stock. additional information on the Canada disposition. million Cenovus Energy common shares was $ 1.96 9.41 the closing date. Our investment on our consolidated balance sheet 2.11 billion, reflecting the closing price of Cenovus 10.15 $ 649 1.46 gain recorded within the “Other income” line of December 31, 2019 relating to the shares held and Note 22—Other Financial Information, for intend to decrease our investment over time

Suspended Wells

Suspended Wells	12 Months Ended
	Dec. 31, 2019
Suspended Wells [Abstract]
Suspended Wells	Note 8—Suspended Wells and Other Exploration Expenses The following table reflects the net changes in suspended Millions of Dollars 2019 2018 2017 Beginning balance at January 1 $ 856 853 1,063 Additions pending the determination of proved reserves 239 140 118 Reclassifications to proved properties (11) (37) (66) Sales of suspended wells (54) (93) - Charged to dry hole expense (10) (7) (262) Ending balance at December 31 $ 1,020 * 856 853 The following table provides an aging of suspended Millions of Dollars 2019 2018 2017 Exploratory well costs capitalized for a period $ 206 145 67 Exploratory well costs capitalized for a period 814 711 786 Ending balance $ 1,020 * 856 853 Number of projects with exploratory well costs period greater than one year 23 24 23 The following table provides a further aging of than one year since the completion of drilling Millions of Dollars Suspended Since Total 2016–2018 2013–2015 2004–2012 Greater Poseidon—Australia (2)(3) 177 - 157 20 NPRA—Alaska (1) 149 111 38 - Barossa/Caldita—Australia (2)(3) 136 59 - 77 Surmont—Canada (1) 118 6 55 57 Middle Magdalena Basin—Colombia (1) 68 - 68 - Narwhal Trend—Alaska (1) 52 52 - - Kamunsu East—Malaysia (2) 19 - 19 - NC 98—Libya (2) 15 - 11 4 WL4-00—Malaysia (2) 17 17 - - Other of $10 million or less each (1)(2) 63 20 26 17 Total $ 814 265 374 175 (1)Additional appraisal wells planned. (2)Appraisal drilling complete; costs being incurred to assess development. (3)Assets held for sale as of December 31, 2019. Other Exploration Expenses In February 2017, we reached a settlement secured for our four-well commitment program before-tax charge of $ 43 “Exploration expenses” line on our consolidated income 2017. In 2019, we recorded before-tax dry hole expenses 111 exploration activities in the Central Louisiana Austin segment and in the “Exploration expenses” line Impairments for additional information on our

Impairments

Impairments	12 Months Ended
	Dec. 31, 2019
Impairment Of Long Lived Assets [Abstract]
Impairments	Note 9—Impairments During 2019, 2018 and 2017, we recognized the Millions of Dollars 2019 2018 2017 Alaska $ - 20 180 Lower 48 402 63 3,969 Canada 2 9 22 Europe and North Africa 1 (79) 46 Asia Pacific and Middle East - 14 2,384 $ 405 27 6,601 2019 In the Lower 48, we recorded impairments 402 Niobrara asset which were written down to fair value Dispositions, The charges discussed below, within this section, are included in the “Exploration consolidated income statement and are not reflected In our Lower 48 segment, we recorded a before-tax impairment 141 value of capitalized undeveloped leasehold costs related to our Central Louisiana Austin Chalk 2018 In Alaska, we recorded impairments of $ 20 In the Lower 48, we recorded impairments 63 Barnett asset which were written down to fair value finalized proceeds on a separate transaction. In our Europe and North Africa segment, we recorded 79 decreased ARO estimates on fields in the partly offset by an increased ARO estimate on a field 2017 In Alaska, we recorded impairments of $ 180 small interest in the Point Thomson unit. In the Lower 48, we recorded impairments 3,969 which were written down to fair value less costs additional information on our dispositions. In Canada, we recorded impairments of $ 22 In Europe and North Africa, we recorded impairments 46 forecasts for a field in the U.K. and restructured ownership processing plant in Norway, partly offset by decreased ARO estimates on fields at or which were impaired in prior years. In Asia Pacific and Middle East, we recorded impairments 2,384 APLNG investment. Long-Term Receivables. The charges discussed below, within this section, are included in the “Exploration consolidated income statement and are not reflected In our Lower 48 segment, we recorded a before-tax impairment 51 value of capitalized undeveloped leasehold costs suspension of appraisal activity by the operator. 38 impairment for mineral assets primarily

Asset Retirement Obligations an

Asset Retirement Obligations and Accrued Environmental Costs	12 Months Ended
	Dec. 31, 2019
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligations and Accrued Environmental Costs	Note 10—Asset Retirement Obligations and Accrued Asset retirement obligations and accrued environmental Millions of Dollars 2019 2018 Asset retirement obligations $ 6,206 7,908 Accrued environmental costs 171 178 Total asset retirement obligations and accrued environmental costs 6,377 8,086 Asset retirement obligations and accrued environmental (1,025) (398) Long-term asset retirement obligations and accrued $ 5,352 7,688 *Classified as a current liability on the balance sheet under “Other accruals.” $ 741 December 31, 2019. For additional information see Note 5—Asset Acquisitions Asset Retirement Obligations We record the fair value of a liability for an ARO when it is incurred (typically when the production location). cost by increasing the carrying amount of the related liability changes, we will record an adjustment increases for the change in its present value, related asset. We have numerous AROs we are required to perform under law or contract once out of service. future and will be funded from general company obligations involve plugging and abandonment platforms around the world, as well as oil and During 2019 and 2018, our overall ARO changed Millions of Dollars 2019 2018 Balance at January 1 $ 7,908 7,798 Accretion of discount 322 348 New obligations 155 657 Changes in estimates of existing obligations 50 (266) Spending on existing obligations (229) (228) Property dispositions (1,920) (161) Foreign currency translation (80) (240) Balance at December 31 $ 6,206 7,908 Accrued Environmental Costs Total accrued environmental costs at December 31, 2019 and 2018, were $ 171 178 respectively. We had accrued environmental costs of $ 112 100 respectively, related to remediation activities in the U.S. and Canada. Other $ 47 67 December 31, 2019 and 2018, respectively. 12 11 December 31, 2019 and 2018, respectively, where the company has been under the Federal Comprehensive Environmental laws. 30 Expected expenditures for environmental obligations using a weighted-average 5 liabilities of $ 97 portion of the accrued environmental costs that 10 7 2021, $ 10 3 2 108 after 2024.

Debt

Debt	12 Months Ended
	Dec. 31, 2019
Debt [Abstract]
Debt	Note 11—Debt Long-term debt at December 31 was: Millions of Dollars 2019 2018 9.125% Debentures due 2021 $ 123 123 8.20% Debentures due 2025 134 134 8.125% Notes due 2030 390 390 7.9% Debentures due 2047 60 60 7.8% Debentures due 2027 203 203 7.65% Debentures due 2023 78 78 7.40% Notes due 2031 500 500 7.375% Debentures due 2029 92 92 7.25% Notes due 2031 500 500 7.20% Notes due 2031 575 575 7% Debentures due 2029 200 200 6.95% Notes due 2029 1,549 1,549 6.875% Debentures due 2026 67 67 6.50% Notes due 2039 2,750 2,750 5.951% Notes due 2037 645 645 5.95% Notes due 2036 500 500 5.95% Notes due 2046 500 500 5.90% Notes due 2032 505 505 5.90% Notes due 2038 600 600 4.95% Notes due 2026 1,250 1,250 4.30% Notes due 2044 750 750 4.15% Notes due 2034 246 246 3.35% Notes due 2024 426 426 3.35% Notes due 2025 199 199 2.4% Notes due 2022 329 329 Floating rate notes due 2022 at 2.81 % – 3.58 % during 2019 and 2.32 % – 3.52 % during 2018 500 500 Industrial Development Bonds due 2035 at 1.08 % – 2.45 % during 2019 and 0.95 % – 1.86 % during 2018 18 18 Marine Terminal Revenue Refunding Bonds due 2031 at 1.08 % – 2.45 % during 0.88 % – 1.95 % during 2018 265 265 Other 17 17 Debt at face value 13,971 13,971 Finance leases 720 777 Net unamortized premiums, discounts and 204 220 Total debt 14,895 14,968 Short-term debt (105) (112) Long-term debt $ 14,790 14,856 Maturities of long-term borrowings, inclusive 2024 are: $ 105 235 940 198 548 We have a revolving credit facility totaling $ 6.0 credit facility may be used for direct bank borrowings, 500 million, or as support for our commercial paper among financial institutions and does not contain requiring maintenance of specified financial default provision relating to the failure to pay principal 200 more by ConocoPhillips, or any of its consolidated Credit facility borrowings may bear interest at London interbank market or at a margin above the overnight certain designated banks in the U.S. amounts. successors cease to be a majority of the Board We have a $ 6.0 capital needs. 90 days . outstanding in programs in place at December no borrowings or letters of credit under the revolving Since we had no $ 6.0 At both December 31, 2019 and 2018, we had 283 outstanding which mature business day. included in the “Long-term debt” line on our consolidated For additional information on Finance Leases, — Non-Mineral Leases.

Guarantees

Guarantees	12 Months Ended
	Dec. 31, 2019
Guarantees [Abstract]
Guarantees	Note 12—Guarantees At December 31, 2019, we were liable for certain arrangements as described below. a guarantor for newly issued or modified guarantees. below, we have not recognized a liability because the fair value of the obligation unless otherwise stated, we are not currently future performance to be either immaterial APLNG Guarantees At December 31, 2019, we had outstanding multiple 37.5 percent ownership interest in APLNG. 2019 exchange rates: ● During the third portion of the funds in a project finance reserve guarantee is 11 years . 170 and may become payable if an enforcement action against APLNG. 14 million. ● In conjunction with our original purchase of an ownership October 2008, we agreed to reimburse Origin arising under guarantees of an existing obligation agreements with remaining terms of up to 22 years . payments, or cost of volume delivery, under these guarantees is estimated 780 million ($ 1.4 billion in the event of intentional or reckless breach) meet its obligations under these agreements and payments are considered unlikely, as the payments, or cost of volume delivery, would only be triggered venturers do not make necessary equity contributions ● We have guaranteed the performance of APLNG with regard to certain other contracts connection with the project’s continued development. 26 years or the life of the venture . guarantees considered subordinated financial amount of future payments related to the remaining 60 would become payable if APLNG does not perform. Other Guarantees We have other guarantees with maximum future potential payment amounts totaling $ 820 of the residual value of leased corporate aircraft, finance reserve accounts. three years and would become payable if, upon sale, certain asset values are lower guaranteed entities, or as a result of nonperformance In conjunction with the disposition of our two continue to support various guarantees and letters are now affiliates of Chrysaor E&P Limited. obligations is approximately $ 100 ConocoPhillips for any losses suffered by us related to Indemnifications Over the years, we have entered into agreements to ventures and assets that gave rise to qualifying for taxes, environmental liabilities, employee claims greatly. indefinite and the maximum amount of future payments for these indemnifications at December 31, 2019, 80 indemnification liability over the relevant time surrounding each type of indemnity. liability when we have information the liability appropriate time period as the fair value of our indemnification possible future payments may exceed amounts recorded, possible to make a reasonable estimate of the recorded carrying amount at December 31, 2019, 30 for known contamination that are included in costs” line on our consolidated balance sheet. Note 13—Contingencies and Commitments.

Contingencies and Commitments

Contingencies and Commitments	12 Months Ended
	Dec. 31, 2019
Contingencies and Commitments [Abstract]
Contingencies and Commitments	Note 13—Contingencies and Commitments A number of lawsuits involving a variety of claims against ConocoPhillips. placement, storage, disposal or release of certain and inactive sites. contingencies. liability when the loss is probable and the amount reasonably estimated and no amount within the range minimum of the range is accrued. recoveries. respect to income tax-related contingencies, where sustaining a tax position is less than certain. about income tax-related contingencies. Based on currently available information, we believe liability exposures will exceed current accruals by consolidated financial statements. both with respect to accrued liabilities changes include contingent liabilities Estimated future environmental remediation magnitude of cleanup costs, the unknown time the determination of our liability in proportion related to tax and legal matters are subject to available during the administrative and litigation Environmental We are subject to international, federal, state and local environmental laws and regulations. our consolidated financial statements, we record best estimates, using all information that is currently available facts, existing technology, and presently enacted laws stakeholder and business considerations. experience in remediation of contaminated sites, the U.S. EPA or other organizations. liabilities, and we accrue them in the period they Although liability of those potentially responsible several for federal sites and frequently so for other particular site. any site at which we have been designated as a in sharing cleanup costs with other financially responsible are still under investigation by the potentially responsible normally assess the appropriate remediation. Where it appears that other potentially responsible share, we consider this inability in estimating As a result of various acquisitions in the past, environmental obligations are mitigated by indemnifications indemnifications are subject to dollar limits We are currently participating in environmental assessments and cleanups at numerous comparable state and international sites. other costs, we make accruals on an undiscounted combination, which we record on a discounted sites where it is probable future costs will be incurred not reduced these accruals for possible insurance recoveries. environmental assessments, cleanups and proceedings. Accrued Environmental Costs, for a summary of our Legal Proceedings We are subject to various lawsuits and claims including but not limited to matters and severance tax payments, gas measurement and damages, climate change, personal injury, and property damage. relate to alleged royalty and tax underpayments claims of alleged environmental contamination vigorously in these matters. Our legal organization applies its knowledge, experience characteristics of our cases, employing a litigation proceedings against us. individual cases. mediation. available information about current developments adequacy of current accruals and determines if accruals, is required. Other Contingencies We have contingent liabilities resulting from throughput agreements with pipeline and not associated with financing arrangements. company with additional funds through advances utilized. $ 277 supplies, commercial activities and services incident In 2007, ConocoPhillips was unable to reach agreement by the Venezuelan government’s Nationalization Decree. Petróleos de Venezuela, S.A. (PDVSA), or its affiliates, directly assumed control over ConocoPhillips’ interests in the Petrozuata and Hamaca heavy oil response to this expropriation, ConocoPhillips ICSID. ConocoPhillips’ significant oil investments decision that the expropriation was unlawful. government of Venezuela to pay ConocoPhillips approximately $ 8.7 government’s unlawful expropriation of the company’s investments in Venezuela in 2007. filed a request for recognition of the award in several issued a decision rectifying the award and reducing 227 at $ 8.5 In 2014, ConocoPhillips filed a separate and independent PDVSA under the contracts that had established the an award in April 2018, finding that PDVSA owed 2 under their agreements in connection with the expropriation of the projects and other pre-expropriation fiscal measures. In August 2018, ConocoPhillips entered into a settlement with PDVSA to recover the full amount of this ICC award, plus interest through the payment period, including initial payments totaling approximately $500 million within a period of 90 days from the time of signing of the settlement agreement. The balance of the settlement is to be paid quarterly over a period of four and a half years. approximately $ 754 jurisdictions, and ConocoPhillips agreed to suspend of default to PDVSA on October 14 and November a result, ConocoPhillips has resumed legal enforcement settlement and any actions thereof meet all appropriate any applicable sanctions imposed by the U.S. against In 2016, ConocoPhillips filed a separate and independent PDVSA under the contracts that had established the awarded ConocoPhillips approximately $ 55 recognition and enforcement of the award in various actions related to the award meet all appropriate applicable sanctions imposed by the U.S. against In February 2017, the ICSID Tribunal unanimously awarded Burlington subsidiary of ConocoPhillips, $ 380 Blocks 7 and 21, in breach of the U.S.-Ecuador separate decision finding Ecuador to be entitled 42 counterclaims. Ecuador paid Burlington $ 337 75 December 2017, and the second installment 262 an offset for the counterclaims decision, of which Burlington Ecuador Limited, its co-venturer and consortium the JOA. Perenco to pay an additional $ 54 Perenco will reconcile their shares of the environmental JOA participating interests, and we expect Burlington’s share will be immaterial. In June 2017, FAR Ltd. initiated arbitration before the ICC against ConocoPhillips with the sale of ConocoPhillips Senegal B.V. to Woodside Energy Holdings (Senegal) Limited in 2016. February 2020, the ICC Tribunal issued an award dismissing In late 2017, ConocoPhillips (U.K.) Limited Trade and Law (UNCITRAL) arbitration against Vietnam in accordance with the U.K.-Vietnam Bilateral Investment Treaty relating to a tax dispute arising from the Limited and ConocoPhillips (U.K.) Gama Limited. 2019, and the arbitration was dismissed in In 2017 and 2018, cities, counties, and a state and Maryland, as well as the Pacific Coast Federation against oil and gas companies, including ConocoPhillips, to abate alleged climate change impacts. lawsuits brought by the Cities of San Francisco, courts and appeals are pending. currently stayed pending resolution of the appeals U.S. Court of Appeals for the Ninth Circuit. state court while rulings in those matters, on the court, are on appeal to the U.S. Court of Appeals Several Louisiana parishes and individual landowners including ConocoPhillips, seeking compensatory in Louisiana. issue of whether they will proceed in federal or these lawsuits. Long-Term Throughput Agreements and Take We have certain throughput agreements and take-or-pay agreements in support of financing arrangements. The agreements typically provide for natural gas the company’s business. 2020—$ 7 7 7 7 7 after—$ 57 25 39 $ 43

Derivative and Financial Instru

Derivative and Financial Instruments	12 Months Ended
	Dec. 31, 2019
Derivative and Financial Instruments [Abstract]
Derivative and Financial Instruments	Note 14—Derivative and Financial Instruments We use futures, forwards, swaps and options in various markets to meet our customer market opportunities. NGLs. Our derivative instruments are held at fair value the right of setoff, they are presented on a net basis. our consolidated statement of cash flows. and losses are recognized either on a gross basis for trading. recognized upon settlement. hedge accounting for our commodity derivatives. The following table presents the gross fair values line items where they appear on our consolidated Millions of Dollars 2019 2018 Assets Prepaid expenses and other current assets $ 288 410 Other assets 34 40 Liabilities Other accruals 283 370 Other liabilities and deferred credits 28 30 The gains (losses) from commodity derivatives consolidated income statement were: Millions of Dollars 2019 2018 2017 Sales and other operating revenues $ 141 45 77 Other income 4 7 - Purchased commodities (118) (41) (61) The table below summarizes our material net exposures contracts: Open Position Long/(Short) 2019 2018 Commodity Natural gas and power (billions of cubic feet equivalent) Fixed price (5) (17) Basis (23) (1) Foreign Currency Exchange Derivatives We have foreign currency exchange rate risk resulting from international operations. exchange derivative activity primarily exposures, such as firm commitments for returns from net investments in foreign affiliates, accounting on our foreign currency exchange The following table presents the gross fair values collateral, and the line items where they appear Millions of Dollars 2019 2018 Assets Prepaid expenses and other current assets $ 1 7 Liabilities Other accruals 20 6 Other liabilities and deferred credits 8 - The losses from foreign currency exchange derivatives consolidated income statement were: Millions of Dollars 2019 2018 2017 Foreign currency transaction losses $ 16 1 13 We had the following net notional position of outstanding foreign currency exchange In Millions Notional Currency 2019 2018 Foreign Currency Exchange Derivatives Sell U.S. dollar, buy British pound USD - 805 Sell British pound, buy other currencies* GBP - 21 Buy British pound, sell euro GBP 4 - Sell Canadian dollar, buy U.S. dollar CAD 1,337 1,242 *Primarily euro and Norwegian krone. In December 2017, we entered into foreign exchange zero cost collars buying the right to sell $1.25 billion CAD at $0.707 CAD and selling the right to buy $1.25 billion CAD at $0.842 CAD against the U.S. dollar. The collar expired during the second quarter of 2019 and we entered into new foreign currency exchange forward contracts to sell $1.35 billion CAD at $0.748 CAD against the U.S. dollar. Financial Instruments We invest in financial instruments with maturities based on our cash forecasts for currency pools we manage. ● Time deposits: Interest bearing deposits placed with financial ● Demand deposits: withdrawn without notice. ● Commercial paper: Unsecured promissory notes issued government agency purchased at a discount to ● U.S. government or government agency obligations: government agencies. ● Corporate bonds: ● Asset-backed securities: Collateralized debt securities. The following investments are carried on our Carrying Amount The following table reflects our investments 2019 which are carried at fair value: Millions of Dollars Carrying Amount Cash and Cash Equivalents Short-Term Investments Investments and Long- Term Receivables Corporate Bonds Remaining maturities within one year $ 1 59 - Remaining maturities greater than one year through - - 99 Commercial Paper Remaining maturities within one year 8 30 - U.S. Government Obligations Remaining maturities within one year - 10 - Remaining maturities greater than one year through - - 15 Asset-backed Securities Remaining maturities greater than one year through - - 19 $ 9 99 133 The following table summarizes the amortized classified as available for sale at December 31, Millions of Dollars Amortized Cost Basis Fair Value Major Security Type Corporate bonds $ 159 159 Commercial paper 38 38 U.S. government obligations 25 25 Asset-backed securities 19 19 $ 241 241 Gross unrealized gains and gross unrealized losses investments in debt securities classified as available There were no other-than-temporary impairments during the year ended December 31, 2019. Gross realized gains and gross realized losses in debt securities classified as available for sale The cost of securities sold and redeemed is determined Credit Risk Financial instruments potentially exposed to concentrations short-term investments, long-term investments receivables. government money market funds, government debt financial institutions, placed in high-quality corporate bonds, U.S. government The credit risk from our OTC derivative contracts, counterparty to the transaction. limits and includes the use of cash-call margins when appropriate, nonperformance. these trades are cleared primarily with an exchange requirements until settled; however, we are exposed to the credit arising from daily margin cash calls, as well as for cash Our trade receivables result primarily international customer base, which limits our receivables have payment terms of 30 days or less , and we continually monitor this exposure and creditworthiness of the counterparties. however, we will sometimes use letters of credit, prepayments credit risk with counterparties that both buy from by us or owed to others Certain of our derivative instruments contain provisions that require us to post collateral if the derivative exposure exceeds a threshold amount. We have contracts with fixed threshold amounts and other contracts with variable threshold amounts that are contingent on our credit rating. The variable threshold amounts typically decline for lower credit ratings, while both the variable and fixed threshold amounts typically revert to zero if we fall below investment grade. Cash is the primary collateral in all contracts; however, many also permit us to post letters of credit as collateral, such as transactions administered through the New York Mercantile Exchange. The aggregate fair value of all derivative in a liability position on December 31, 2019 and 79 62 respectively. no collateral If our credit rating had been downgraded below required to post $ 76

Fair Value Measurement

Fair Value Measurement	12 Months Ended
	Dec. 31, 2019
Fair Value Measurement [Abstract]
Fair Value Measurement	Note 15—Fair Value Measurement We carry a portion of our assets and liabilities at fair value that are measured at a reporting price (i.e., the price that would be received to sell according to the quality of valuation inputs under ● Level 1: Quoted prices (unadjusted) in an active ● Level 2: Inputs other than quoted prices that ● Level 3: Unobservable inputs that are significant The classification of an asset or liability that are initially classified as Level 3 are subsequently unobservable inputs is inconsequential to the overall available. corroborated market data is no longer available. no material transfers in or out of Level 1 during Recurring Fair Value Measurement Financial assets and liabilities reported at fair Cenovus Energy shares, derivatives. ● Level 1 derivative assets and liabilities primarily valued using unadjusted prices available from the investment in common shares of Cenovus Energy, which is valued using quotes for shares and our investments in U.S. government obligations are valued using exchange prices. ● Level 2 derivative assets and liabilities primarily sale contracts that are valued using adjusted exchange companies that are all corroborated by market securities classified as available for sale including asset-backed securities that are valued using are corroborated with market data. ● Level 3 derivative assets and liabilities consist contracts where a significant portion of fair readily available. relationships among various commodities, modeled relevant economic measures. Level 3 activity was not material for all periods The following table summarizes the fair value unadjusted where the right of setoff exists for commodity basis): Millions of Dollars December 31, 2019 December 31, 2018 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Investment in Cenovus Energy $ 2,111 - - 2,111 1,462 - - 1,462 Investments in debt securities 25 216 - 241 Commodity derivatives 172 114 36 322 236 181 33 450 Total assets $ 2,308 330 36 2,674 1,698 181 33 1,912 Liabilities Commodity derivatives $ 174 115 22 311 225 145 30 400 Total liabilities $ 174 115 22 311 225 145 30 400 The following table summarizes those commodity presented on our consolidated balance sheet. multiple derivative instruments executed with the same right of setoff exists. Millions of Dollars Amounts Subject to Right of Setoff Gross Amounts Not Gross Net Amounts Subject to Gross Amounts Amounts Cash Net Recognized Right of Setoff Amounts Offset Presented Collateral Amounts December 31, 2019 Assets $ 322 3 319 193 126 4 122 Liabilities 311 4 307 193 114 12 102 December 31, 2018 Assets $ 450 9 441 280 161 - 161 Liabilities 400 4 396 280 116 10 106 At December 31, 2019 and December 31, 2018, balance sheet where we had the right of setoff. Non-Recurring Fair Value Measurement The following table summarizes the fair value assets accounted for at fair value on a non-recurring Millions of Dollars Fair Value Measurements Using Fair Value Level 1 Inputs Level 2 Inputs Level 3 Inputs Before-Tax Loss Year Net PP&E (held for sale) $ 194 194 - - 351 166 166 - - 28 Equity Method Investments 171 171 - - 60 30 - 30 - 95 Year Net PP&E (held for sale) $ 250 - - 250 44 201 201 - - 43 Net PP&E (held for sale) Net PP&E held for sale was written down to fair determined by its negotiated selling price (Level For additional information see Note 5—Asset Equity Method Investments During 2019, certain equity method investments amounts, and the impairments were considered to Topic 323. determined by negotiated selling prices. Dispositions. carrying value, and was written down to fair value. Entities. Reported Fair Values of Financial Instruments We used the following methods and assumptions to estimate the fair value of financial ● Cash and cash equivalents and short-term investments: sheet approximates fair value. the carrying amount reported on the balance sheet ● Accounts and notes receivable (including long-term reported on the balance sheet approximates fair estimate the fair value of the current portion and advances—related parties. ● Investment in Cenovus Energy shares: See Note 7—Investment the carrying value and fair value of our investment ● Investments in debt securities classified as available securities categorized as Level 1 in the fair fair value of investments in debt securities measured using pricing provided by brokers or market data. ● Loans and advances—related parties: The carrying value. categorized as Level 2 in the fair value hierarchy. Receivables, for additional information. ● Accounts payable (including related parties) payable and floating-rate debt reported on the balance ● Fixed-rate debt: The estimated fair value of fixed-rate pricing service that is corroborated by market 2 in the fair value hierarchy. The following table summarizes the net fair setoff exists for commodity derivatives): Millions of Dollars Carrying Amount Fair Value 2019 2018 2019 2018 Financial assets Investment in Cenovus Energy $ 2,111 1,462 2,111 1,462 Commodity derivatives 125 170 125 170 Investments in debt securities 241 - 241 - Total loans and advances—related parties 339 468 339 468 Financial liabilities Total debt, excluding finance leases 14,175 14,191 18,108 16,147 Commodity derivatives 106 110 106 110 Commodity Derivatives At December 31, 2019, commodity derivative 4 obligations to return cash collateral and $ 12 December 31, 2018, commodity derivative assets no cash collateral and $ 10

Equity

Equity	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Equity	Note 16—Equity Common Stock The changes in our shares of common stock, as categorized Shares 2019 2018 2017 Issued Beginning of year 1,791,637,434 1,785,419,175 1,782,079,107 Distributed under benefit plans 4,014,769 6,218,259 3,340,068 End of year 1,795,652,203 1,791,637,434 1,785,419,175 Held in Treasury Beginning of year 653,288,213 608,312,034 544,809,771 Repurchase of common stock 57,495,601 44,976,179 63,502,263 End of year 710,783,814 653,288,213 608,312,034 Preferred Stock We have authorized 500 0.01 none or outstanding at December 31, 2019 or 2018. Noncontrolling Interests At December 31, 2019 and 2018, we had $ 69 125 less-than-wholly owned consolidated subsidiaries the amounts were related to the Darwin LNG Repurchase of Common Stock As of December 31, 2019, we had announced a total 15 stock. 168,553,141 9,625 million, through December 31, 2019. an increase to our repurchase authorization 25 repurchases.

Non Mineral Leases

Non Mineral Leases	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Non-Mineral Leases	Note 17—Non-Mineral Leases The company primarily leases office buildings and drilling tugboats, corporate aircraft, and other facilities adjusting rental payments to reflect changes in price vary based on the nature of usage of the leased that provide it with the option to extend or renew the lease term, or purchase the leased asset as executed lease agreements that require it to additional information about guarantees, see imposed on us by the lease agreements with regard Certain arrangements may contain both lease and or contains a lease at contract inception. subject to the provisions of ASC Topic 842, and any non-lease components are subject accounting guidance; however, we have elected to adopt the optional practical expedient not to separate lease components apart from non-lease components for accounting purposes. for each of the company’s leased asset classes existing as of the effective date and provisions of ASC Topic 842 and will be applied to all new or modified leases 2019. company will determine at contract inception leased asset class. Leases are evaluated for classification as operating and right-of-use assets and corresponding liabilities the present value of future lease payments relating Future lease payments include variable lease payments rate at the commencement date and probable future lease payments may be increased to include and/or purchase options when the company has generally due to limited asset availability options. lease payments, unless the interest rate payments that vary subsequent to the commencement asset activities, or certain other contingencies are and corresponding liabilities. sheet for lease arrangements with terms of 12 months We often enter into leasing arrangements acting in the capacity as operator for and/or and gas joint ventures of undivided interests. as operator and there is no separate arrangement to recognize at lease commencement a right-of-use balance sheet on a gross basis. statement and statement of cash flows, such costs coventurers for their share of the lease cost as the underlying As a result, lease cost is presented in our consolidated proportional basis. lease liability only if we were a specified contractual be legally enforced against us. corresponding lease liability on our consolidated undivided interest ownership in the related joint The company has historically recorded certain under the proportionate consolidation method of basis consistent with its ownership interest recorded finance lease assets and liabilities basis pursuant to accounting guidance applicable 420 million of finance lease assets (net of accumulated 688 recorded on our consolidated balance sheet provisions of ASC Topic 842, and since we have elected to adopt the package practical expedients, the historical accounting treatment to reconsideration upon the modification or expiration. In connection with our adoption of ASC Topic 842, we have recorded on our 57 million of operating leases executed by investee consolidation method of accounting on a proportional investee company. The following tables summarize the finance leases sheet as of December 31, 2018, the operating asset and lease liability balances reflected for both sheet as of December 31, 2019: Millions of Dollars * Includes proportionately consolidated finance lease assets (net of 335 Millions of Dollars Short-term debt and long-term debt include proportionately consolidated finance 56 579 The following table summarizes our lease costs Millions of Dollars 2019 Lease Cost * Operating lease cost $ 341 Finance lease cost Amortization of right-of-use assets 99 Interest on lease liabilities 37 Short-term lease cost ** 77 Total lease cost *** $ 554 *The amounts presented in the table above have not been adjusted to reflect amounts recovered or reimbursed from oil and gas coventurers. 31 18 ***Variable lease cost and sublease income are immaterial for the period presented and therefore are not included in the table above. The following table summarizes the lease terms December 31, 2019 Lease Term and Discount Rate Weighted-average term (years) Operating leases 5.19 Finance leases 8.70 Weighted-average discount rate (percent) Operating leases 3.10 Finance leases 5.53 The following table summarizes other lease information Millions of Dollars 2019 Other Information * Cash paid for amounts included in the measurement Operating cash flows from operating leases $ 203 Operating cash flows from finance leases 27 Financing cash flows from finance leases 81 Right-of-use assets obtained in exchange for $ 499 Right-of-use assets obtained in exchange for 26 *The amounts presented in the table above have not been adjusted to reflect amounts recovered or reimbursed from oil and gas coventurers. addition, are reported in the "Cash Flows From Investing Activities" section of our consolidated statement of cash flows. The following table summarizes future lease Millions of Dollars Operating Leases Finance Maturity of Lease Liabilities 2020 $ 348 120 2021 247 104 2022 130 102 2023 82 88 2024 63 84 Remaining years 149 382 Total * 1,019 880 Less: portion representing imputed interest (87) (160) Total lease liabilities $ 932 720 *Future lease payments for operating and finance leases commencing on components in accordance with our election to adopt the optional practical components for accounting purposes. company have been included in the table on a proportionate basis consistent company or oil and gas venture. At December 31, 2018, future minimum payments ASC Topic 840 were: Millions of Dollars 2019 $ 118 2020 116 2021 100 2022 98 2023 87 Remaining years 453 Total 972 Less: portion representing imputed interest (195) Capital lease obligations $ 777 At December 31, 2018, future undiscounted minimum leases pursuant to ASC Topic 840 were: Millions of Dollars 2019 $ 248 2020 425 2021 136 2022 319 2023 54 Remaining years 212 Total 1,394 Less: income from subleases (7) Net minimum operating lease payments $ 1,387 For the years ended December 31, operating Millions of Dollars 2018 2017 Total rentals $ 253 264 Less: sublease rentals (16) (20) $ 237 244

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2019
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plans	Note 18—Employee Benefit Plans Pension and Postretirement Plans An analysis of the projected benefit obligations our postretirement health and life insurance plans Millions of Dollars Pension Benefits Other Benefits 2019 2018 2019 2018 U.S. Int’l. U.S. Int’l. Change in Benefit Obligation Benefit obligation at January 1 $ 2,136 3,438 3,236 3,845 218 265 Service cost 79 69 83 81 1 1 Interest cost 79 97 99 107 8 8 Plan participant contributions - 2 - 2 20 22 Plan amendments - - - 7 - - Actuarial (gain) loss 278 387 (44) (259) 27 (10) Benefits paid (253) (147) (507) (143) (59) (67) Curtailment - (69) (4) (3) - - Settlement - - (730) - - - Recognition of termination benefits - 1 3 - - - Foreign currency exchange rate change - 102 - (199) 1 (1) Benefit obligation at December 31* $ 2,319 3,880 2,136 3,438 216 218 *Accumulated benefit obligation portion of above at $ 2,161 3,594 1,969 3,066 Change in Fair Value of Plan Assets Fair value of plan assets at January 1 $ 1,336 3,358 2,541 3,647 - - Actual return on plan assets 273 529 (112) (106) - - Company contributions 235 464 144 156 39 45 Plan participant contributions - 2 - 2 20 22 Benefits paid (253) (147) (507) (143) (59) (67) Settlement - - (730) - - - Foreign currency exchange rate change - 100 - (198) - - Fair value of plan assets at December 31 $ 1,591 4,306 1,336 3,358 - - Funded Status $ (728) 426 (800) (80) (216) (218) Millions of Dollars For both U.S. and international pensions, the expected future return of each asset class, weighted class. class of assets. Included in accumulated other comprehensive amounts that had not been recognized in net Millions of Dollars Pension Benefits Other Benefits 2019 2018 2019 2018 U.S. Int’l. U.S. Int’l. Unrecognized net actuarial (gain) loss $ 479 227 516 310 8 (21) Unrecognized prior service cost (credit) - (2) - (4) (183) (216) Millions of Dollars Included in accumulated other comprehensive amounts that are expected to be amortized into Millions of Dollars Pension Other Benefits Benefits U.S. Int’l. Unrecognized net actuarial (gain) loss $ 50 23 1 Unrecognized prior service credit - (2) (31) For our tax-qualified pension plans with projected benefit obligation, the accumulated benefit obligation, 2,073 $ 1,919 1,635 1,871 1,737 and $ 1,373 For our unfunded nonqualified key employee supplemental the accumulated benefit obligation were $ 601 542 and were $ 586 504 The components of net periodic benefit cost of Millions of Dollars Pension Benefits Other Benefits 2019 2018 2017 2019 2018 2017 U.S. Int’l. U.S. Int’l. U.S. Int’l. Components of Net Periodic Benefit Cost Service cost $ 79 69 83 81 89 77 1 1 2 Interest cost 79 97 99 107 118 103 8 8 9 Expected return on plan assets (74) (138) (114) (155) (132) (158) - - - Amortization of prior service cost (credit) - (2) - (5) 4 (6) (33) (35) (36) Recognized net actuarial loss (gain) 54 32 53 31 69 50 (2) (1) (3) Settlements 62 - 196 - 131 - - - - Net periodic benefit cost $ 200 58 317 59 279 66 (26) (27) (28) The components of net periodic benefit cost, other expenses” line item on our consolidated income statement. In 2018, we purchased a group annuity contract 730 obligations from the U.S. qualified pension plan to funded directly by plan assets of the U.S. qualified Account (Title II) of the ConocoPhillips Retirement Plan, entrants. Title II will no longer receive pay credits to their Cash Balance Company Retirement Contribution (CRC) as We recognized pension settlement losses of $ 62 196 131 2017 as lump-sum benefit payments from certain costs for those plans and led to recognition of settlement The sale of two ConocoPhillips U.K. subsidiaries significant reduction of future services of active curtailment. assets were updated, the pension benefit obligation $ 43 a decrease in the discount rate from 2.90 1.80 offset by a decrease in the pension benefit obligation from In determining net pension and other postretirement line basis over the average remaining service period For net actuarial gains and losses, we amortize 10 We have multiple nonpension postretirement benefit plans for health and life insurance. are contributory and subject to various cost sharing adjusted annually; the life insurance plans are medical accumulated postretirement benefit 7 2020 that declines to 5 2028 . postretirement benefit obligation assumes an ultimate 4 that increases to 5 2028 . would be immaterial to ConocoPhillips. Plan Assets —We follow a policy of broadly diversifying pension plan assets across asset individual holdings. that are considered appropriate include U.S. equities, income, real estate and private equity investments. the investment program from time to time. 37 securities, 56 6 1 are publicly traded, therefore minimizing liquidity The following is a description of the valuation methodologies been no changes in the methodologies used at ● Fair values of equity securities and government based on quoted market prices in active markets ● Fair values of corporate debt securities, agency and securities categorized in Level 2 are estimated prices for similar assets and liabilities in markets that are not active. security, its fair value is calculated by pricing models that benchmark the security securities with actual market prices. value is based on pricing models that use something inputs such as benchmark yields, reported trades and securities are categorized in Level 3 of the fair ● Fair values of investments in common/collective based on the fair value of the underlying assets. ● Fair values of mutual funds are based on quoted shares held. ● Time deposits are valued at cost, which approximates fair ● Cash is valued at cost, which approximates fair categorized in Level 2 are valued using observable cash balances held in the form of short-term are categorized as Level 2. ● Fair values of exchange-traded derivatives classified For other derivatives classified in Level 2, the values with market input parameters from third-party ● Fair values of insurance contracts are valued at the by the insurance company to the plans’ participants. ● Fair values of real estate investments are valued methods that include reference to third-party sources ● A portion of U.S. pension plan assets is held as contract, which is calculated as the market value accumulated benefit obligation covered by the Level 3 in the fair value hierarchy as the fair value prices, recently executed transactions, and obligations. $ 95 235 140 benefit obligation covered by the contract. annuity contract was valued at $ 84 228 144 million for the accumulated benefit obligation 2019 is due to an increase in the fair value of the 7 decrease in the present value of the contract obligation 4 available for meeting general pension benefit contributions are required and no new benefits contract. The fair values of our pension plan assets at Millions of Dollars U.S. International Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total 2019 Equity securities U.S. $ 94 - 7 101 435 - - 435 International 98 - - 98 266 - - 266 Mutual funds 93 - - 93 245 267 - 512 Debt securities Government - - - - 1,412 - - 1,412 Corporate - 2 - 2 - - - - Mutual funds - - - - 392 - - 392 Cash and cash equivalents - - - - 98 - - 98 Derivatives - - - - 11 - - 11 Real estate - - - - - - 132 132 Total in fair value hierarchy $ 285 2 7 294 2,859 267 132 3,258 Investments measured at net asset value* Equity securities Common/collective trusts $ - - - 457 - - - 167 Debt securities Common/collective trusts - - - 637 - - - 760 Cash and cash equivalents - - - 25 - - - - Real estate - - - 83 - - - 112 Total** $ 285 2 7 1,496 2,859 267 132 4,297 **Excludes the participating interest in the insurance annuity contract with a 95 9 The fair values of our pension plan assets at Millions of Dollars U.S. International Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total 2018 Equity securities U.S. $ 74 - 20 94 371 - - 371 International 80 - - 80 241 - - 241 Mutual funds 76 - - 76 213 181 - 394 Debt securities Government - - - - 889 - - 889 Corporate - 2 - 2 - - - - Mutual funds - - - - 363 - - 363 Cash and cash equivalents - - - - 71 - - 71 Time deposits - - - - 6 - - 6 Derivatives - - - - (17) - - (17) Real estate - - - - - - 124 124 Total in fair value hierarchy $ 230 2 20 252 2,137 181 124 2,442 Investments measured at net asset value* Equity securities Common/collective trusts $ - - - 364 - - - 153 Debt securities Common/collective trusts - - - 548 - - - 641 Cash and cash equivalents - - - 5 - - - - Real estate - - - 80 - - - 109 Total** $ 230 2 20 1,249 2,137 181 124 3,345 **Excludes the participating interest in the insurance annuity contract with a 84 16 Level 3 activity was not material for all Our funding policy for U.S. plans is to contribute Income Security Act of 1974 and the Internal plans are dependent upon local laws and tax regulations. 350 million to our domestic qualified and nonqualified 90 our international qualified and nonqualified The following benefit payments, which are exclusive and which reflect expected future service, as appropriate, Millions of Dollars Pension Other Benefits Benefits U.S. Int’l. 2020 $ 447 150 32 2021 270 156 29 2022 250 158 27 2023 217 163 24 2024 220 170 22 2025–2029 822 927 64 Severance Accrual The following table summarizes our severance accrual Millions of Dollars Of the remaining balance at December 31, 2019, 5 Defined Contribution Plans Most U.S. employees are eligible to participate deposit up to 75 approximately 17 1 their eligible pay receive a 6 contribution of up to 6 to opt out of Title II are eligible to receive a CRC of 6 three years 100 charged to expense for the CPSP and predecessor plans 82 82 $ 77 We have several defined contribution plans for our international employees, each eligibility depending on location. approximately $ 30 31 35 Share-Based Compensation Plans The 2014 Omnibus Stock and Performance Incentive shareholders in May 2014. 10 -year life, the Plan allows the issuance of 79 common stock for compensation to our employees (i) any shares of common stock available for future stock represented by awards granted under the prior delivery of shares of common stock or which result company shall be available for awards under the plans. 40 common stock are available for incentive stock of our Board of Directors is authorized to determine granted. performance share units to employees and non-employee success and profitability. Total share-based compensation expense is measured using the grant date fair value awards and the settlement date fair value for our compensation expense over the shorter of the service award); or the period beginning at the start of the eligible for retirement, but not less than six months, award to not be subject to forfeiture. vesting (i.e., a waiver of the remaining period of service employees at the time of their retirement. award vest at different times) while some of our awards We recognize expense on a straight-line basis over the service period for the entire was granted with ratable or cliff vesting. Compensation Expense —Total share-based compensation expense recognized in income (loss) and the associated tax benefit for the years ended Millions of Dollars 2019 2018 2017 Compensation cost $ 274 265 227 Tax benefit 71 64 76 Stock Options — Stock options granted under the provisions of the Plan and prior plans permit purchase of our common stock at exercise prices equivalent to the average fair market value of ConocoPhillips common stock on the date the options were granted. The options have terms of 10 years and generally vest ratably, with one- third of the options awarded vesting and becoming exercisable on each anniversary date following the date of grant. Options awarded to certain employees already eligible for retirement vest within six months of the grant date, but those options do not become exercisable until the end of the normal vesting period. Beginning in 2018, stock option grants were discontinued and replaced with three-year, time-vested restricted stock units which generally will be cash-settled. The fair market values of the options granted in Black-Scholes-Merton option-pricing model. 2017 Assumptions used Risk-free interest rate 2.24 % Dividend yield 4.00 % Volatility 28.12 % Expected life (years) 6.39 There were no ranges in the assumptions used to 2017. We believe our historical volatility for periods prior to the 2012 separation of our longer relevant in estimating expected volatility. average blend of the company’s historical stock price volatility from Downstream businesses) through the stock option a group of peer companies for the expected term The following summarizes our stock option activity Millions of Dollars Weighted-Average Aggregate Options Exercise Price Intrinsic Value Outstanding at December 31, 2018 19,379,677 $ 52.88 $ 214 Exercised (1,339,480) 36.28 39 Forfeited - Expired or cancelled - Outstanding at December 31, 2019 18,040,197 $ 54.11 $ 206 Vested at December 31, 2019 17,922,026 $ 54.14 $ 205 Exercisable at December 31, 2019 17,172,815 $ 54.33 $ 194 The weighted-average remaining contractual term options at December 31, 2019, was 4.43 4.41 4.29 grant date fair value of stock option awards granted 9.18 . options exercised was $ 94 4 During 2019, we received $ 49 13 options. was zero . Stock Unit Program— Generally, restricted stock units are granted annually under the provisions of the Plan and vest in an aggregate installment on the third anniversary of the grant date. In addition, restricted stock units granted under the Plan for a variable long-term incentive program vest ratably in three equal annual installments beginning on the first anniversary of the grant date. Restricted stock units are also granted ad hoc to attract or retain key personnel, and the terms and conditions under which these restricted stock units vest vary by award . Stock-Settled Upon vesting, these restricted stock units are settled by issuing one share of ConocoPhillips common stock per unit. Units awarded to retirement eligible employees vest six months from the grant date; however, those units are not issued as common stock until the earlier of separation from the company or the end of the regularly scheduled vesting period. Until issued as stock, most recipients of the restricted stock units receive a quarterly cash payment of a dividend equivalent that is charged to retained earnings. The grant date fair market value of these restricted stock units is deemed equal to the average ConocoPhillips stock price on the grant date. The grant date fair market value of units that do not receive a dividend equivalent while unvested is deemed equal to the average ConocoPhillips stock price on the grant date, less the net present value of the dividends that will not be received . The following summarizes our stock-settled stock Weighted-Average Millions of Dollars Stock Units Grant Date Fair Value Total Fair Value Outstanding at December 31, 2018 7,546,973 $ 43.41 Granted 2,045,503 67.77 Forfeited (99,748) 62.93 Issued (3,269,682) 34.32 $ 225 Outstanding at December 31, 2019 6,223,046 $ 55.99 Not Vested at December 31, 2019 4,185,141 56.17 At December 31, 2019, was $ 93 1.71 being 2.73 2017 was $ 52.45 48.77 , respectively. $ 154 159 Cash-Settled Beginning in 2018, cash-settled executive restricted stock units replaced the stock option program. These restricted stock units, subject to elections to defer, will be settled in cash equal to the fair market value of a share of ConocoPhillips common stock per unit on the settlement date and are classified as liabilities on the balance sheet. Units awarded to retirement eligible employees vest six months from the grant date; however, those units are not settled until the earlier of separation from the company or the end of the regularly scheduled vesting period. Compensation expense is initially measured using the average fair market value of ConocoPhillips common stock and is subsequently adjusted, based on changes in the ConocoPhillips stock price through the end of each subsequent reporting period, through the settlement date. Recipients receive an accrued reinvested dividend equivalent that is charged to compensation expense. The accrued reinvested dividend is paid at the time of settlement, subject to the terms and conditions of the award. The following summarizes our cash-settled stock Weighted-Average Millions of Dollars Stock Units Grant Date Fair Value Total Fair Value Outstanding at December 31, 2018 376,608 $ 62.21 Granted 319,552 68.20 Forfeited (6,914) 61.35 Issued (92,255) 61.61 $ 6 Outstanding at December 31, 2019 596,991 $ 64.54 Not Vested at December 31, 2019 153,457 64.54 At December 31, 2019, was $ 5 1.70 being 2.12 $ 53.68 . 1 Performance Share Program —Under the Plan, we also annually grant restricted (PSUs) to senior management. performance period). ConocoPhillips common stock and is subsequently price through the end of each subsequent reporting the settlement date for cash-settled awards. Stock-Settled For performance periods beginning before 2009, PSUs do not vest until the employee becomes eligible for retirement by reaching age 55 with five years of service, and restrictions do not lapse until the employee separates from the company. With respect to awards for performance periods beginning in 2009 through 2012, PSUs do not vest until the earlier of the date the employee becomes eligible for retirement by reaching age 55 with five years of service or five years after the grant date of the award, and restrictions do not lapse until the earlier of the employee’s separation from the company or five years after the grant date (although recipients can elect to defer the lapsing of restrictions until separation). We recognize compensation expense for these awards beginning on the grant date and ending on the date the PSUs are scheduled to vest. Since these awards are authorized three years prior to the grant date, for employees eligible for retirement by or shortly after the grant date, we recognize compensation expense over the period beginning on the date of authorization and ending on the date of grant. Until issued as stock, recipients of the PSUs receive a quarterly cash payment of a dividend equivalent that is charged to retained earnings. Beginning in 2013, PSUs authorized for future grants will vest, absent employee election to defer, upon settlement following the conclusion of the three-year performance period. We recognize compensation expense over the period beginning on the date of authorization and ending on the conclusion of the performance period. PSUs are settled by issuing one share of ConocoPhillips common stock per unit. The following summarizes our stock-settled Performance December 31, 2019: Weighted-Average Millions of Dollars Stock Units Grant Date Fair Value Total Fair Value Outstanding at December 31, 2018 2,335,542 $ 50.45 Granted 77,841 68.90 Forfeited - Issued (388,559) 53.66 $ 25 Outstanding at December 31, 2019 2,024,824 $ 50.55 Not Vested at December 31, 2019 15,616 $ 47.80 At December 31, 2019, performance share awards was zero . during 2018 and 2017 was $ 53.28 49.76 , respectively. during 2018 and 2017 was $ 29 57 Cash-Settled In connection with and immediately following the new PSUs, subject to a shortened performance employee election to defer, on the earlier of five years after employee becomes eligible for retirement. date, we recognize compensation expense the date of grant. the date the PSUs are scheduled to vest. share of ConocoPhillips common stock per unit the balance sheet. dividend equivalent that is charged to compensation expense. Beginning in 2013, PSUs authorized for future grants three-year performance period. authorization and ending at the conclusion of to the fair market value of a share of ConocoPhillips classified as liabilities on the balance sheet. performance period, recipients of the PSUs do but after the performance period ends, until quarterly cash payment of a dividend equivalent period beginning in 2018, recipients of the PSUs charged to compensation expense. the terms and conditions of the award. The following summarizes our cash-settled Performance December 31, 2019: Weighted-Average Millions of Dollars Stock Units Grant Date Fair Value Total Fair Value Outstanding at December 31, 2018 1,131,007 $ 62.21 Granted 1,958,043 68.90 Forfeited - Settled (2,479,776) 69.10 $ 171 Outstanding at December 31, 2019 609,274 $ 64.54 Not Vested at December 31, 2019 38,487 $ 64.54 At December 31, 2019, performance share awards was zero . during 2018 and 2017 was $ 53.28 49.76 , respectively. share awards settled during 2018 and 2017 22 24 From inception of the Performance Share Program conclusion of performance periods. Beginning in February 2014, initial target PSU awards are issued near the beginning of new performance periods. These initial target PSU awards will terminate at the end of the performance periods and will be settled after the performance periods have ended. Also in 2014, initial target PSU awards were issued for open performance periods that began in prior years. For the open performance period beginning in 2012, the initial target PSU awards terminated at the end of the three-year performance period and were replaced with approved PSU awards. For the open performance period beginning in 2013, the initial target PSU awards terminated at the end of the three-year performance period and were settled after the performance period ended. There is no effect on recognition of compensation expense. Other —In addition to the above active programs, stock units that were either issued as part of former members of the company’s Board of Directors or as part of an executive has been discontinued. dividend equivalent. The following summarizes the aggregate activity December 31, 2019: Weighted-Average Millions of Dollars Stock Units Grant Date Fair Value Total Fair Value Outstanding at December 31, 2018 1,107,315 $ 46.57 Granted 64,063 63.58 Cancelled (2,307) 23.73 Issued (177,163) 49.23 $ 11 Outstanding at December 31, 2019 991,908 $ 47.24 At December 31, 2019, all outstanding restricted was no granted during 2018 and 2017 was $ 62.01 48.87 , respectively. during 2018 and 2017 was $ 17 4

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2019
Income Taxes [Abstract]
Income Taxes	Note 19—Income Taxes Income taxes charged to net income (loss) were: Millions of Dollars 2019 2018 2017 Income Taxes Federal Current $ 18 4 79 Deferred (113) 545 (3,046) Foreign Current 2,545 3,273 1,729 Deferred (323) (166) (510) State and local Current 148 108 51 Deferred (8) (96) (125) $ 2,267 3,668 (1,822) Deferred income taxes reflect the net tax effect of temporary assets and liabilities for financial reporting purposes of deferred tax liabilities and assets at December Millions of Dollars 2019 2018 Deferred Tax Liabilities PP&E and intangibles $ 8,660 8,004 Inventory 35 60 Deferred state income tax - 61 Other 234 156 Total deferred tax liabilities 8,929 8,281 Deferred Tax Assets Benefit plan accruals 542 641 Asset retirement obligations and accrued environmental 2,339 2,891 Investments in joint ventures 1,722 104 Other financial accruals and deferrals 777 330 Loss and credit carryforwards 8,968 2,378 Other 345 398 Total deferred tax assets 14,693 6,742 Less: valuation allowance (10,214) (3,040) Net deferred tax assets 4,479 3,702 Net deferred tax liabilities $ 4,450 4,579 At December 31, 2019, noncurrent assets and liabilities 184 million and $ 4,634 of $ 442 million and $ 5,021 At December 31, 2019, the components of the applicable valuation allowances were: Millions of Dollars Net Deferred Expiration of Gross Deferred Tax Asset After Net Deferred Tax Asset Valuation Allowance Tax Asset U.S. foreign tax credits $ 7,696 14 2028 U.S. general business credits 250 250 2036-2038 U.S. capital loss 202 32 2024 State net operating losses and tax credits 370 50 Various Foreign net operating losses and tax credits 450 413 Post 2025 $ 8,968 759 Valuation than not, be realized. 7,174 primarily relates to deferred tax assets recognized the U.S. Tax Cuts and Jobs Act (Tax Legislation including ongoing issuance of tax regulations related to such legislation), as further discussed below. and available tax-planning strategies, management primarily be realized as offsets to reversing deferred tax On December 2, 2019, the Internal Revenue Service Tax Cuts and Jobs Act. recognized $ 151 6,642 foreign tax credit carryovers where recognition still makes their realization unlikely and therefore allowance. At December 31, 2019, unremitted income subsidiaries and foreign corporate joint ventures 4,196 have not been provided on this amount, as of income taxes. payable on this income if distributed is approximately 210 The following table shows a reconciliation 2018 and 2017: Millions of Dollars 2019 2018 2017 Balance at January 1 $ 1,081 882 381 Additions based on tax positions related to the current 9 268 612 Additions for tax positions of prior years 120 43 109 Reductions for tax positions of prior years (22) (73) (129) Settlements (9) (35) (5) Lapse of statute (2) (4) (86) Balance at December 31 $ 1,177 1,081 882 Included in the balance of unrecognized tax benefits 1,100 $ 1,081 882 balance of the unrecognized tax benefits increased settlement. The balance of the unrecognized tax distributions from certain foreign subsidiaries. mainly due to the recognition of a U.S. worthless securities cash tax benefit. settlement. At December 31, 2019, 2018 and 2017, accrued liabilities 42 $ 45 54 benefit to earnings of $ 3 4 no in 2017. We file tax returns in the U.S. federal jurisdiction and in many foreign and state jurisdictions. jurisdictions are generally complete as follows: Issues in dispute for audited years and audits for completion in the many jurisdictions in which unrecognized tax benefits can be expected to fluctuate changes could be significant when compared change is not estimable. The amounts of U.S. and foreign income (loss) statutory rate with the provision for income taxes, Millions of Dollars Percent of Pre-Tax Income (Loss) 2019 2018 2017 2019 2018 2017 Income (loss) before income taxes United States $ 4,704 2,867 (5,250) 49.4 % 28.7 200.8 Foreign 4,820 7,106 2,635 50.6 71.3 (100.8) $ 9,524 9,973 (2,615) 100.0 % 100.0 100.0 Federal statutory income tax $ 2,000 2,095 (915) 21.0 % 21.0 35.0 Non-U.S. effective tax rates 1,399 1,766 625 14.7 17.7 (23.9) Tax Legislation - (10) (852) - (0.1) 32.6 Canada disposition - - (1,277) - - 48.8 U.K. disposition (732) (150) - (7.7) (1.5) - Recovery of outside basis (77) (21) (962) (0.8) (0.2) 36.8 Adjustment to tax reserves 9 (4) 881 0.1 - (33.7) Adjustment to valuation allowance (225) (26) - (2.4) (0.3) - APLNG impairment - - 834 - - (31.9) State income tax 123 135 (84) 1.3 1.4 3.2 Malaysia Deepwater Incentive (164) - - (1.7) - - Enhanced oil recovery credit (27) (99) (68) (0.3) (1.0) 2.6 Other (39) (18) (4) (0.4) (0.2) 0.2 $ 2,267 3,668 (1,822) 23.8 % 36.8 69.7 Our effective tax rate for 2019 was favorably impacted disposition generated a before-tax gain of more than 1.7 335 million. The disposition generated a U.S. capital 2.1 tax benefit of approximately $ 285 asset fully offset with a valuation allowance. information on the disposition. During the third quarter of 2019, we received final deepwater tax credits. As a result, we recorded 164 The decrease in the effective tax rate for 2018 was primarily the U.K. and our overall income position, partially Our effective tax rate for 2018 was favorably impacted held 16.5 percent of our 24 percent interest generated a before-tax gain of $ 715 Dispositions, Tax Legislation was enacted in the U.S. on December 22, 2017, reducing the rate to 21 percent from 35 percent, requiring companies foreign subsidiaries that were previously tax deferred earnings. SAB 118 measurement period We applied the guidance in Staff Accounting Bulletin No. 118 when accounting for the enactment-date effects of Tax Legislation in 2017 and throughout 2018. accounting for all the enactment-date income the remeasurement of deferred tax assets and liabilities 2018, we had completed our accounting for all the further discussed below, during 2018, we recognized adjustments of $ 10 recorded at December 31, 2017, and included these Provisional Amounts—Foreign tax effects The one-time transition tax is based on our total from U.S. income taxes under U.S. law. We estimated at December 31, 2017, that we would not incur a one- time transition tax. by the U.S. Department of the Treasury and the Internal Revenue transition tax liability during 2018. As a result of the Tax Legislation, we removed the indefinite reinvestment subsidiaries and recorded a tax expense of $ 56 Deferred tax assets and liabilities As of December 31, 2017, we remeasured certain deferred they were expected to reverse in the future (which amount of $ 908 calculations during the 12 months ended December 10 million, which is included as a component of income Global intangible low-taxed income (GILTI) We have elected to account for GILTI income tax impact related to GILTI activities is immaterial. Our effective tax rate in 2017 was favorably impacted 1,277 disposition. capital gains exclusion component of the 2017 unrealizable Canadian capital asset tax basis. of our Canadian operations, may generate an additional 822 believe it is not likely we will receive a corresponding 822 offset by a full tax reserve. Canada disposition. The impairment of our APLNG investment in the the “APLNG” section of Note 6—Investments, impairment of our APLNG investment. Certain operating losses in jurisdictions outside security deduction. the amount of the tax benefit was $ 9 36 962

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income	Note 20—Accumulated Other Comprehensive Loss Accumulated other comprehensive loss in the Millions of Dollars Defined Benefit Plans Net Unrealized Loss on Securities Foreign Currency Translation Accumulated Other Comprehensive Loss December 31, 2016 $ (547) - (5,646) (6,193) Other comprehensive income (loss) 147 (58) 586 675 December 31, 2017 (400) (58) (5,060) (5,518) Other comprehensive income (loss) 39 - (642) (603) Cumulative effect of adopting ASU No. 2016-01* - 58 - 58 December 31, 2018 (361) - (5,702) (6,063) Other comprehensive income 51 - 695 746 Cumulative effect of adopting ASU No. 2018-02** (40) - - (40) December 31, 2019 $ (350) - (5,007) (5,357) — Changes in Accounting Principles for additional information. During 2019, we recognized $ 483 of our sale of two ConocoPhillips U.K. subsidiaries. Note 5—Asset Acquisitions and Dispositions. There were no items within accumulated other comprehensive The following table summarizes reclassifications ended December 31: Millions of Dollars 2019 2018 Defined Benefit Plans $ 88 189 Above amounts are included in the computation of net periodic benefit cost are presented net of tax expense of: $ 23 50 See Note 18—Employee Benefit Plans, for additional information.

Cash Flow Information

Cash Flow Information	12 Months Ended
	Dec. 31, 2019
Cash Flow Information [Abstract]
Cash Flow Information	Note 21—Cash Flow Information Millions of Dollars 2019 2018 2017 Noncash Investing Activities Increase (decrease) in PP&E related to an increase retirement obligations $ 205 395 (37) Increase (decrease) in assets and liabilities exchange* Accounts receivable - (44) - Inventories - 42 - Investments and long-term receivables - 15 - PP&E - 1,907 - Other long-term assets - (9) - Accounts payable - 7 - Accrued income and other taxes - 40 - Cash Payments Interest $ 810 772 1,163 Income taxes 2,905 2,976 1,168 Net Sales (Purchases) of Investments Short-term investments purchased $ (4,902) (1,953) (6,617) Short-term investments sold 2,138 3,573 4,827 Investments and long-term receivables purchased (146) - - $ (2,910) 1,620 (1,790) *See Note 5—Asset Acquisitions and Dispositions. The following items are included in the “Cash cash flows. We collected $ 330 430 agreement related to an award issued by the ICC 262 75 from Ecuador in 2018 and 2017, respectively, as installment payments related Ecuador in 2017. In 2019, we made a $ 324 our domestic qualified pension plan of $ 120 600 In 2017, we recognized a $ 180 transactions.

Other Financial Information

Other Financial Information	12 Months Ended
	Dec. 31, 2019
Other Financial Information [Abstract]
Other Financial Information	Note 22—Other Financial Information Millions of Dollars 2019 2018 2017 Interest and Debt Expense Incurred Debt $ 799 838 1,114 Other 36 67 103 835 905 1,217 Capitalized (57) (170) (119) Expensed $ 778 735 1,098 Other Income Interest income $ 166 97 112 Unrealized gains (losses) on Cenovus Energy common shares* 649 (437) - Other, net 543 513 417 $ 1,358 173 529 *See Note 7—Investment in Cenovus Energy, for additional information. Research and Development Expenditures —expensed $ 82 78 100 Shipping and Handling Costs $ 1,008 1,075 1,050 Foreign Currency Transaction (Gains) Losses —after-tax Alaska $ - - - Lower 48 - - - Canada 5 (11) 3 Europe and North Africa - (26) 7 Asia Pacific and Middle East 31 3 23 Other International 1 - 1 Corporate and Other 21 21 (3) $ 58 (13) 31 Millions of Dollars

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Note 23—Related Party Transactions Our related parties primarily include equity method Significant transactions with our equity affiliates Millions of Dollars 2019 2018 2017 Operating revenues and other income $ 89 98 107 Purchases 38 98 99 Operating expenses and selling, general and administrative 65 60 59 Net interest (income) expense* (13) (14) (13) *We paid interest to, or received interest from, The table above includes transactions with the Investments, Loans and Long-Term Receivables, for additional information.

Sales and Other Operating Reven

Sales and Other Operating Revenues	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer	Note 24—Sales and Other Operating Revenues Revenue from Contracts with Customers The following table provides further disaggregation Millions of Dollars Revenues from contracts outside the scope of ASC market prices which qualify as derivatives accounted and for which we have not elected NPNS. for recognition of revenue from these contracts disaggregation of revenues is provided in conjunction Information: Millions of Dollars Millions of Dollars Practical Expedients Typically, cases may extend longer, which may be out to the end of 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 from Contracts with Customers At December 31, 2019, the “Accounts and trade receivables of $ 2,372 2,889 contracts with customers within the scope of ASC Topic 606. We typically receive payment within 30 days or less (depending on the terms of the invoice) once delivery is made. Revenues that are outside the scope of ASC Topic 606 relate primarily to contracts at market prices for which we do not under ASC Topic 815. receivables associated with gas sold under contracts receivables where NPNS has been elected. Contract Liabilities from Contracts with Customers We have entered into contractual arrangements where we license proprietary technology to customers related to the optimization process for operating LNG plants. The agreements typically provide for negotiated payments to be made at stated milestones. The payments are not directly related to our performance under the contract and are recorded as deferred revenue to be recognized as revenue when the customer can utilize and benefit from their right to use the license. Payments are received in installments over the construction period. Millions of Dollars We expect to recognize the contract liabilities as of December 31, 2019, as revenue during 2021 and 2022.

Segment Disclosures and Related

Segment Disclosures and Related Information	12 Months Ended
	Dec. 31, 2019
Segment Disclosures and Related Information [Abstract]
Segment Disclosures and Related Information	Note 25—Segment Disclosures and Related Information We explore for, produce, transport and market crude oil, bitumen, natural gas, LNG and NGLs on basis. six region: Alaska, Lower 48, Canada, Europe and International. Corporate and Other represents costs not directly expense, premiums on early retirement of debt, licensing revenues. We evaluate performance and allocate resources based on net income (loss) attributable Segment accounting policies are the same as those prices that approximate market. Analysis of Results by Operating Segment Millions of Dollars 2019 2018 2017 Sales and Other Operating Revenues Alaska $ 5,483 5,740 4,224 Lower 48 15,514 17,029 12,968 Intersegment eliminations (46) (40) (4) Lower 48 15,468 16,989 12,964 Canada 2,910 3,184 3,178 Intersegment eliminations (1,141) (1,160) (559) Canada 1,769 2,024 2,619 Europe and North Africa 5,101 6,635 5,181 Asia Pacific and Middle East 4,525 4,861 4,014 Other International - - - Corporate and Other 221 168 104 Consolidated sales and other operating revenues $ 32,567 36,417 29,106 Depreciation, Depletion, Amortization and Impairments Alaska $ 805 760 1,026 Lower 48 3,224 2,370 6,693 Canada 232 324 461 Europe and North Africa 887 1,041 1,313 Asia Pacific and Middle East 1,285 1,382 3,819 Other International - - - Corporate and Other 62 106 134 Consolidated depreciation, depletion, amortization $ 6,495 5,983 13,446 The market for our products is large and diverse, therefore, dependent upon any single customer. Millions of Dollars Income Taxes Alaska $ 472 376 (689) Lower 48 137 474 (2,453) Canada (43) (96) (616) Europe and North Africa 1,435 2,265 1,165 Asia Pacific and Middle East 491 722 351 Other International 8 30 21 Corporate and Other (233) (103) 399 Consolidated income taxes $ 2,267 3,668 (1,822) Net Income (Loss) Attributable to ConocoPhillips Alaska $ 1,520 1,814 1,466 Lower 48 436 1,747 (2,371) Canada 279 63 2,564 Europe and North Africa 2,724 1,866 553 Asia Pacific and Middle East 1,929 2,070 (1,098) Other International 263 364 167 Corporate and Other 38 (1,667) (2,136) Consolidated net income (loss) attributable $ 7,189 6,257 (855) Investments in and Advances to Affiliates Alaska $ 83 86 56 Lower 48 35 378 402 Canada - - - Europe and North Africa 54 55 55 Asia Pacific and Middle East 8,281 8,821 9,077 Other International - - - Corporate and Other - - - Consolidated investments in and advances to affiliates $ 8,453 9,340 9,590 Millions of Dollars Capital Expenditures and Investments Alaska $ 1,513 1,298 815 Lower 48 3,394 3,184 2,136 Canada 368 477 202 Europe and North Africa 708 877 872 Asia Pacific and Middle East 584 718 482 Other International 8 6 21 Corporate and Other 61 190 63 Consolidated capital expenditures and investments $ 6,636 6,750 4,591 Interest Income and Expense Interest income Alaska $ - - - Lower 48 - - - Canada - - - Europe and North Africa 2 2 2 Asia Pacific and Middle East 15 15 9 Other International - - - Corporate and Other 149 80 101 Interest and debt expense Corporate and Other $ 778 735 1,098 Sales and Other Operating Revenues by Crude oil $ 18,482 19,571 13,260 Natural gas 8,715 10,720 10,773 Natural gas liquids 814 1,114 1,102 Other* 4,556 5,012 3,971 Consolidated sales and other operating revenues $ 32,567 36,417 29,106 *Includes LNG and bitumen. Geographic Information Millions of Dollars Sales and Other Operating Revenues (1) Long-Lived Assets (2) 2019 2018 2017 2019 2018 2017 United States (3) $ 21,159 22,740 17,204 26,566 26,838 23,623 Australia and Timor-Leste (4) 1,647 1,798 1,448 7,228 9,301 9,657 Canada 1,769 2,024 2,619 5,769 5,333 5,613 China 772 836 712 1,447 1,380 1,275 Indonesia 875 886 757 605 669 758 Libya 1,103 1,142 586 668 679 699 Malaysia 1,230 1,346 1,103 1,871 2,327 2,736 Norway 2,349 2,886 2,348 5,258 5,582 6,154 United Kingdom 1,649 2,606 2,248 2 1,583 3,335 Other foreign countries 14 153 81 1,308 1,346 1,423 Worldwide consolidated $ 32,567 36,417 29,106 50,722 55,038 55,273 (1) Sales and other operating revenues are attributable (2) Defined as net PP&E plus equity investments (3) Long-lived assets do not include $ 426 2019. (4) Long-lived assets do not include $ 1,236 31, 2019.

New Accounting Standards

New Accounting Standards	12 Months Ended
	Dec. 31, 2019
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Standards [Text Block]	Note 2—Changes in Accounting Principles We adopted the provisions of FASB ASU No. 2016-02, “Leases,” (ASC Topic 842) and its amendments, beginning January 1, 2019. requirements for leasing arrangements, supersedes “Leases” (ASC Topic 840), and requires lessees to recognize substantially on the balance sheet. requirements for recognition, measurement, presentation lessees and lessors. We adopted ASC Topic Transition Method, which permits us to apply the provisions existing at or entered into after January 1, 2019, prior to January 1, 2019 under the historical the package of optional transition-related practical forward certain historical conclusions reached classification, and the accounting treatment and liabilities on our consolidated balance sheet months or less. The primary impact of applying ASC Topic 842 is the initial recognition 998 corresponding right-of-use assets on our consolidated as operating leases under ASC Topic 840, as well as enhanced disclosure of our leasing accounting treatment for finance leases remains retained earnings or other components of equity Topic 842 did not impact the presentation of our consolidated income statement See Note 17—Non-Mineral Leases for additional We adopted the provisions of FASB ASU No. 2018-02, “Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income,” from accumulated other comprehensive income Tax Cuts and Jobs Act, eliminating the stranded tax effects. sheet at January 1, 2019 for the adoption of Millions of Dollars Note 26—New Accounting Standards In June 2016, the FASB issued ASU No. 2016-13, “Measurement of Credit Losses on (ASU No. 2016-13), which sets forth the current impairment model for certain financial instruments ASU is effective for interim and annual periods beginning adopt ASU No. 2016-13 using a modified retrospective impact

Supplementary Information - Con

Supplementary Information - Condensed Consolidating Financial Information	12 Months Ended
	Dec. 31, 2019
Supplementary Information - Condensed Consolidating Financial Information [Abstract]
Supplementary Information - Condensed Consolidating Financial Information	Supplementary Information—Condensed Consolidating We have various cross guarantees among ConocoPhillips, ConocoPhillips Company LLC, with respect to publicly held debt securities. ConocoPhillips. ConocoPhillips and/or ConocoPhillips Company obligations of Burlington Resources LLC, with respect ConocoPhillips has fully and unconditionally with respect to its publicly held debt securities. unconditionally guaranteed the payment obligations securities. presents the results of operations, financial position ● ConocoPhillips, ConocoPhillips Company and investments in subsidiaries utilizing the equity ● All other nonguarantor subsidiaries of ConocoPhillips. ● The consolidating adjustments necessary to present In 2017, ConocoPhillips Company received a $ 9.8 billion return of capital and a $ 1.4 from nonguarantor subsidiaries to settle certain no impact on our consolidated financial statements. In 2017, ConocoPhillips received a $ 7.8 0.2 ConocoPhillips Company to settle certain impact on our consolidated financial statements. In 2018, ConocoPhillips Company received a $ 4.8 2.4 from nonguarantor subsidiaries to settle certain no impact on our consolidated financial statements. In 2018, ConocoPhillips received a $ 3.5 1.0 ConocoPhillips Company to settle certain impact on our consolidated financial statements. In 2019, ConocoPhillips received a $ 2.4 1.7 ConocoPhillips Company to settle certain on our consolidated financial statements. In 2019, ConocoPhillips Company received a $ 4.5 4.2 from nonguarantor subsidiaries to settle certain no impact on our consolidated financial statements. In 2019, Burlington Resources LLC received 3.2 to settle certain accumulated intercompany balances. financial statements. This condensed consolidating financial information consolidated financial statements and notes. Millions of Dollars Millions of Dollars Millions of Dollars Millions of Dollars Millions of Dollars

Schedule ll

Schedule ll	12 Months Ended
	Dec. 31, 2019
Valuation and Qualifying Accounts [Abstract]
VALUATION AND QUALIFYING ACCOUNTS	SCHEDULE II—VALUATION ConocoPhillips Millions of Dollars Balance at Charged to Balance at Description January 1 Expense Other (a) Deductions December 31 2019 Deducted from asset accounts: Allowance for doubtful accounts and notes receivable $ 25 5 - (17) (b) 13 Deferred tax asset valuation allowance 3,040 7,376 (26) (176) 10,214 Included in other liabilities: Restructuring accruals 48 (1) - (24) (c) 23 2018 Deducted from asset accounts: Allowance for doubtful accounts and notes receivable $ 4 23 - (2) (b) 25 Deferred tax asset valuation allowance 1,254 2,067 (8) (273) 3,040 Included in other liabilities: Restructuring accruals 53 70 (2) (73) (c) 48 2017 Deducted from asset accounts: Allowance for doubtful accounts and notes receivable $ 5 2 - (3) (b) 4 Deferred tax asset valuation allowance 675 560 19 - 1,254 Included in other liabilities: Restructuring accruals 80 65 1 (93) (c) 53 (a)Represents acquisitions/dispositions/revisions and the effect of translating foreign financial statements. (b)Amounts charged off less recoveries of amounts previously charged off. (c)Benefit payments. See Note 19 — Income Taxes, in the Notes to Consolidated Financial Statements, for additional information related to our deferred tax asset valuation allowance.

Accounting Policies (Policies)

Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Consolidation Principles and Investments	Consolidation Principles and Investments —Our consolidated financial statements of majority-owned, controlled subsidiaries beneficiary. ability to exert significant influence over the affiliates’ have the ability to exert significant influence, investment does not have a readily determinable cost minus impairment, plus or minus observable similar investment of the same issuer. gas plants and terminals are consolidated on a proportionate generally carried at cost. We manage our operations through six operating segments, defined by geographic 48, Canada, Europe and North Africa, Asia Pacific additional information, see Note 25—Segment
Foreign Currency Translation	Foreign Currency Translation —Adjustments resulting from the process of translating functional currency financial statements into comprehensive loss in common stockholders’ equity. included in current earnings. currency.
Use of Estimates	Use of Estimates —The preparation of financial statements generally accepted in the U.S. requires management reported amounts of assets, liabilities, liabilities.
Revenue Recognition	Revenue Recognition —Revenues associated with the sales of crude NGLs and other items are recognized at the point In evaluating when a customer has control of the title and physical delivery has occurred, whether ownership, and whether the customer has accepted are typically sold at prevailing market prices. deliveries (performance obligations) in the efforts to transfer control of current period deliveries to the expect to be entitled to in exchange for the related Payment is typically due within 30 days or less. Revenues associated with transactions commonly of inventory with the same counterparty are entered and reported net (i.e., on the same income statement Typically, cases may extend longer, which may be out to the end of 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.
Cash Equivalents	Cash Equivalents —Cash equivalents are highly liquid, short-term convertible to known amounts of cash and have purchase.
Investment, Policy	Short-Term Investments —Short-term investments include investments marketable securities (commercial paper and government accrued interest and have original maturities remaining maturities are within one year. for sale debt securities which are carried at fair investments when they have remaining maturities Long-Term Investments in Debt Securities —Long-term investments in debt securities financial instruments classified as available for sale one year as of the balance sheet date. and long-term receivables” line of our consolidated
Inventories	Inventories —We have several valuation methods for our various types of inventories use the following methods for each type of inventory. are recorded at cost using the LIFO basis. the aggregate. permanent adjustments to the LIFO cost basis. current revenues. product to its existing condition and location, development costs. well equipment, are valued using various methods, FIFO method, consistent with industry practice.
Fair Value Measurements	Fair Value Measurements —Assets and liabilities measured at fair value within the fair value hierarchy are categorized into observability of the inputs employed in the measurement. markets for identical assets or liabilities. included within Level 1 for the asset or liability, either directly or indirectly inputs. to observable related market data or our assumptions
Derivative Instruments	Derivative Instruments —Derivative instruments are recorded on the balance right of offset exists and certain other criteria are met, counterparty are netted on the balance sheet and the derivative assets and derivative liabilities, Recognition and classification of the gain or loss fair value depends on the purpose for issuing or not accounted for as hedges are recognized immediately
Oil and Gas Exploration and Development	Oil and Gas Exploration and Development —Oil and gas exploration and development accounted for using the successful efforts method of Property Acquisition Costs —Oil and gas leasehold acquisition costs are the balance sheet caption PP&E. experience and management’s judgment. to be classified as proved, the associated leasehold Exploratory Costs —Geological and geophysical costs and the undeveloped properties are expensed as incurred. “suspended,” on the balance sheet pending further reserves have been found. are expensed as dry holes. gas, the well costs remain capitalized on the balance reserves and the economic and operating viability exploratory discoveries, it is not unusual to sheet for several years while we perform additional potential oil and gas field or while we seek government or seek environmental permitting. projects are moved into the development phase, reserves. Management reviews suspended well balances quarterly, continuously monitors additional appraisal drilling and seismic work, when it judges the potential field does not Suspended Wells and Other Exploration Expenses, for additional information Development Costs —Costs incurred to drill and equip development development wells, are capitalized. Depletion and Amortization —Leasehold costs of producing properties of-production method based on estimated proved development costs is based on the unit-of-production and gas reserves.
Capitalized Interest	Capitalized Interest —Interest from external borrowings is expected construction period of one year or longer. underlying asset and is amortized over the useful assets.
Depreciation and Amortization	Depreciation and Amortization —Depreciation and amortization of PP&E properties and certain pipeline and LNG assets pattern), are determined by the unit-of-production method. PP&E are determined by either the individual-unit-straight-line (for those individual units that are highly integrated
Impairment of Properties, Plants and Equipment	Impairment of Properties, Plants and Equipment —PP&E used in operations are assessed for impairment whenever changes in facts and circumstances the future cash flows expected to be generated following updates to corporate planning assumptions. asset may not be recovered, the asset is monitored changes to significant assumptions such as prices, If, upon review, the sum of the undiscounted before-tax cash flows is less asset group, the carrying value is written down to depreciation provisions and reported as impairments impairment is made. there are identifiable cash flows that are largely independent generally on a field-by-field basis for E&P assets. for long-lived assets, the fair value of impaired assets of expected future cash flows using discount rates market participants or based on a multiple of operating transactions of similar assets where possible. within one year are accounted for at the lower value determined using a binding negotiated price, flows as previously described. The expected future cash flows used for impairment on estimated future production volumes, prices review. including any development expenditures necessary probable and possible reserves exist, an appropriate included in the impairment calculation.
Impairment of Investments in Nonconsolidated Entities	Impairment of Investments in Nonconsolidated —Investments in nonconsolidated entities assessed for impairment whenever changes in occurred and annually following updates to corporate judgmentally determined to be other than temporary, the carrying value of the to fair value. upon the present value of expected future cash those used by principal market participants, investee, if appropriate.
Maintenance and Repairs	Maintenance and Repairs —Costs of maintenance and repairs, which are are expensed when incurred.
Property Dispositions	Property Dispositions —When complete units of depreciable property accumulated depreciation are eliminated, of our consolidated income statement. disposed of or retired which do not significantly and salvage value is charged or credited to accumulated
Asset Retirement Obligations and Environmental Costs	Asset Retirement Obligations and Environmental Costs —The fair value of legal obligations to retire and remove long-lived assets are recorded in when the asset is installed at the production location). capitalize this cost by increasing the carrying amount estimate of this liability changes, we will record an the liability is increased for the change in its present depreciated over the useful life of the related asset. no longer producing are recorded as a credit as a credit to DD&A, if the asset had not been previously Note 10—Asset Retirement Obligations and Accrued Environmental expenditures are expensed or capitalized, Expenditures relating to an existing condition economic benefit, are expensed. undiscounted basis (unless acquired in a purchase basis) when environmental assessments or cleanups estimated. their receipt is probable and estimable.
Guarantees	Guarantees —The fair value of a guarantee is determined guarantee is given. the guarantee. the facts and circumstances surrounding each type indefinite, we reverse the liability when we have or amortize it over an appropriate time time. the guarantee. separate liability if it is reasonably estimable, reverse the fair value liability only when there
Stock-Based Compensation	Share-Based Compensation —We recognize share-based compensation expense over the shorter of the service period (i.e., the stated period of time required start of the service period and ending when an elected to recognize expense on a straight-line the award was granted with ratable or cliff vesting.
Income Taxes	Income Taxes —Deferred income taxes are computed using temporary differences between the financial reporting basis except for deferred taxes on income and temporary adjustment considered to be permanently reinvested joint ventures. taxes. related to unrecognized tax benefits are reflected
Taxes Collected from Customers and Remitted to Governmental Authorities	Taxes Collected from Customers and Remitted to Governmental Authorities —Sales and value- added taxes are recorded net.
Net Income (Loss) Per Share of Common Stock	Net Income (Loss) Per Share of Common Stock —Basic net income (loss) per share of common stock is calculated based upon the daily weighted-average year. calculation includes fully vested stock and unit common stock, along with an adjustment to unit awards that are considered participating includes unvested stock, unit or option awards granted unexercised stock options, but only to the extent these under the treasury-stock method. per share, does not assume conversion or exercise Treasury stock is excluded from the daily weighted-average number both calculations.
Shipping and Handling Cost, Policy [Policy Text Block]	Shipping and Handling Costs —We typically incur shipping and handling costs prior to control transferring to the customer and account for these shipping and handling costs in production and operating Transportation costs related to marketing activities are recorded in billed to customers are treated as a component of the revenue when the customer obtains control.
Long-Duration Contracts Revenue Recognition, Policy [Policy Text Block]	We have entered into contractual arrangements where we license proprietary technology to customers related to the optimization process for operating LNG plants. The agreements typically provide for negotiated payments to be made at stated milestones. The payments are not directly related to our performance under the contract and are recorded as deferred revenue to be recognized as revenue when the customer can utilize and benefit from their right to use the license. Payments are received in installments over the construction period.

Change in Accounting Principles

Change in Accounting Principles (Tables)	12 Months Ended
	Dec. 31, 2019
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]	Millions of Dollars

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2019
Inventories [Abstract]
Inventories	Note 4—Inventories Inventories at December 31 were: Millions of Dollars 2019 2018 Crude oil and natural gas $ 472 432 Materials and supplies 554 575 $ 1,026 1,007

Investments, Loans and Long-T_2

Investments, Loans and Long-Term Receivables (Tables)	12 Months Ended
	Dec. 31, 2019
Investments, Loans and Long-Term Receivables and Joint Venture Acquisition Obligation [Abstract]
Components of investments, loans and long-term receivables	Note 6—Investments, Loans and Long-Term Receivables Components of investments, loans and long-term Millions of Dollars 2019 2018 Equity investments $ 8,234 9,005 Loans and advances—related parties 219 335 Long-term receivables 243 238 Long-term investments in debt securities 133 - Other investments 77 86 $ 8,906 9,664
Summarized financial information for equity method investments in affiliated companies	Summarized 100 percent earnings information combined, was as follows: Millions of Dollars 2019 2018 2017 Revenues $ 11,310 11,654 11,554 Income (loss) before income taxes 3,726 3,660 (2,875) Net income (loss) 3,085 3,244 (1,431) Summarized 100 percent balance sheet information combined, was as follows: Millions of Dollars 2019 2018 Current assets $ 3,289 3,285 Noncurrent assets 38,905 41,563 Current liabilities 2,603 2,625 Noncurrent liabilities 22,168 23,874

Suspended Wells (Tables)

Suspended Wells (Tables)	12 Months Ended
	Dec. 31, 2019
Suspended Wells [Abstract]
Net changes in suspended exploratory well costs	Note 8—Suspended Wells and Other Exploration Expenses The following table reflects the net changes in suspended Millions of Dollars 2019 2018 2017 Beginning balance at January 1 $ 856 853 1,063 Additions pending the determination of proved reserves 239 140 118 Reclassifications to proved properties (11) (37) (66) Sales of suspended wells (54) (93) - Charged to dry hole expense (10) (7) (262) Ending balance at December 31 $ 1,020 * 856 853
Aging of suspended well cost	The following table provides an aging of suspended Millions of Dollars 2019 2018 2017 Exploratory well costs capitalized for a period $ 206 145 67 Exploratory well costs capitalized for a period 814 711 786 Ending balance $ 1,020 * 856 853 Number of projects with exploratory well costs period greater than one year 23 24 23
Aging of Exploratory Well Cost that have been capitalized for more than one year	The following table provides a further aging of than one year since the completion of drilling Millions of Dollars Suspended Since Total 2016–2018 2013–2015 2004–2012 Greater Poseidon—Australia (2)(3) 177 - 157 20 NPRA—Alaska (1) 149 111 38 - Barossa/Caldita—Australia (2)(3) 136 59 - 77 Surmont—Canada (1) 118 6 55 57 Middle Magdalena Basin—Colombia (1) 68 - 68 - Narwhal Trend—Alaska (1) 52 52 - - Kamunsu East—Malaysia (2) 19 - 19 - NC 98—Libya (2) 15 - 11 4 WL4-00—Malaysia (2) 17 17 - - Other of $10 million or less each (1)(2) 63 20 26 17 Total $ 814 265 374 175 (1)Additional appraisal wells planned. (2)Appraisal drilling complete; costs being incurred to assess development. (3)Assets held for sale as of December 31, 2019.

Impairments (Tables)

Impairments (Tables)	12 Months Ended
	Dec. 31, 2019
Impairment Of Long Lived Assets [Abstract]
Impairment Charges By Segment Before Tax	Note 9—Impairments During 2019, 2018 and 2017, we recognized the Millions of Dollars 2019 2018 2017 Alaska $ - 20 180 Lower 48 402 63 3,969 Canada 2 9 22 Europe and North Africa 1 (79) 46 Asia Pacific and Middle East - 14 2,384 $ 405 27 6,601

Asset Retirement Obligations _2

Asset Retirement Obligations and Accrued Environmental Costs (Tables)	12 Months Ended
	Dec. 31, 2019
Asset Retirement Obligation Disclosure [Abstract]
Asset retirement obligations and accrued environmental costs	Note 10—Asset Retirement Obligations and Accrued Asset retirement obligations and accrued environmental Millions of Dollars 2019 2018 Asset retirement obligations $ 6,206 7,908 Accrued environmental costs 171 178 Total asset retirement obligations and accrued environmental costs 6,377 8,086 Asset retirement obligations and accrued environmental (1,025) (398) Long-term asset retirement obligations and accrued $ 5,352 7,688
Changes in overall asset retirement obligation changed	During 2019 and 2018, our overall ARO changed Millions of Dollars 2019 2018 Balance at January 1 $ 7,908 7,798 Accretion of discount 322 348 New obligations 155 657 Changes in estimates of existing obligations 50 (266) Spending on existing obligations (229) (228) Property dispositions (1,920) (161) Foreign currency translation (80) (240) Balance at December 31 $ 6,206 7,908

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2019
Debt [Abstract]
Long-term debt	Note 11—Debt Long-term debt at December 31 was: Millions of Dollars 2019 2018 9.125% Debentures due 2021 $ 123 123 8.20% Debentures due 2025 134 134 8.125% Notes due 2030 390 390 7.9% Debentures due 2047 60 60 7.8% Debentures due 2027 203 203 7.65% Debentures due 2023 78 78 7.40% Notes due 2031 500 500 7.375% Debentures due 2029 92 92 7.25% Notes due 2031 500 500 7.20% Notes due 2031 575 575 7% Debentures due 2029 200 200 6.95% Notes due 2029 1,549 1,549 6.875% Debentures due 2026 67 67 6.50% Notes due 2039 2,750 2,750 5.951% Notes due 2037 645 645 5.95% Notes due 2036 500 500 5.95% Notes due 2046 500 500 5.90% Notes due 2032 505 505 5.90% Notes due 2038 600 600 4.95% Notes due 2026 1,250 1,250 4.30% Notes due 2044 750 750 4.15% Notes due 2034 246 246 3.35% Notes due 2024 426 426 3.35% Notes due 2025 199 199 2.4% Notes due 2022 329 329 Floating rate notes due 2022 at 2.81 % – 3.58 % during 2019 and 2.32 % – 3.52 % during 2018 500 500 Industrial Development Bonds due 2035 at 1.08 % – 2.45 % during 2019 and 0.95 % – 1.86 % during 2018 18 18 Marine Terminal Revenue Refunding Bonds due 2031 at 1.08 % – 2.45 % during 0.88 % – 1.95 % during 2018 265 265 Other 17 17 Debt at face value 13,971 13,971 Finance leases 720 777 Net unamortized premiums, discounts and 204 220 Total debt 14,895 14,968 Short-term debt (105) (112) Long-term debt $ 14,790 14,856

Derivative and Financial Inst_2

Derivative and Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2019
Derivative and Financial Instruments [Abstract]
Balance sheet location and fair value amounts of derivatives	The following table presents the gross fair values line items where they appear on our consolidated Millions of Dollars 2019 2018 Assets Prepaid expenses and other current assets $ 288 410 Other assets 34 40 Liabilities Other accruals 283 370 Other liabilities and deferred credits 28 30 The following table presents the gross fair values collateral, and the line items where they appear Millions of Dollars 2019 2018 Assets Prepaid expenses and other current assets $ 1 7 Liabilities Other accruals 20 6 Other liabilities and deferred credits 8 -
Income statement location and gain/loss amounts of derivatives	The gains (losses) from commodity derivatives consolidated income statement were: Millions of Dollars 2019 2018 2017 Sales and other operating revenues $ 141 45 77 Other income 4 7 - Purchased commodities (118) (41) (61) The losses from foreign currency exchange derivatives consolidated income statement were: Millions of Dollars 2019 2018 2017 Foreign currency transaction losses $ 16 1 13
Net exposures/net notional positions of derivative contracts	The table below summarizes our material net exposures contracts: Open Position Long/(Short) 2019 2018 Commodity Natural gas and power (billions of cubic feet equivalent) Fixed price (5) (17) Basis (23) (1) We had the following net notional position of outstanding foreign currency exchange In Millions Notional Currency 2019 2018 Foreign Currency Exchange Derivatives Sell U.S. dollar, buy British pound USD - 805 Sell British pound, buy other currencies* GBP - 21 Buy British pound, sell euro GBP 4 - Sell Canadian dollar, buy U.S. dollar CAD 1,337 1,242 *Primarily euro and Norwegian krone.
Net carrying amount of held to maturity investments	Carrying Amount
Debt Securities Carried at Fair Value	The following table reflects our investments 2019 which are carried at fair value: Millions of Dollars Carrying Amount Cash and Cash Equivalents Short-Term Investments Investments and Long- Term Receivables Corporate Bonds Remaining maturities within one year $ 1 59 - Remaining maturities greater than one year through - - 99 Commercial Paper Remaining maturities within one year 8 30 - U.S. Government Obligations Remaining maturities within one year - 10 - Remaining maturities greater than one year through - - 15 Asset-backed Securities Remaining maturities greater than one year through - - 19 $ 9 99 133
Schedule of Unrealized Loss on Investments [Table Text Block]	The following table summarizes the amortized classified as available for sale at December 31, Millions of Dollars Amortized Cost Basis Fair Value Major Security Type Corporate bonds $ 159 159 Commercial paper 38 38 U.S. government obligations 25 25 Asset-backed securities 19 19 $ 241 241

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	12 Months Ended
	Dec. 31, 2019
Fair Value Measurement [Abstract]
Fair value hierarchy for gross financial assets and liabilities	The following table summarizes the fair value unadjusted where the right of setoff exists for commodity basis): Millions of Dollars December 31, 2019 December 31, 2018 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Investment in Cenovus Energy $ 2,111 - - 2,111 1,462 - - 1,462 Investments in debt securities 25 216 - 241 Commodity derivatives 172 114 36 322 236 181 33 450 Total assets $ 2,308 330 36 2,674 1,698 181 33 1,912 Liabilities Commodity derivatives $ 174 115 22 311 225 145 30 400 Total liabilities $ 174 115 22 311 225 145 30 400
Commodity derivative balances subject to right of setoff	The following table summarizes those commodity presented on our consolidated balance sheet. multiple derivative instruments executed with the same right of setoff exists. Millions of Dollars Amounts Subject to Right of Setoff Gross Amounts Not Gross Net Amounts Subject to Gross Amounts Amounts Cash Net Recognized Right of Setoff Amounts Offset Presented Collateral Amounts December 31, 2019 Assets $ 322 3 319 193 126 4 122 Liabilities 311 4 307 193 114 12 102 December 31, 2018 Assets $ 450 9 441 280 161 - 161 Liabilities 400 4 396 280 116 10 106 At December 31, 2019 and December 31, 2018, balance sheet where we had the right of setoff.
Values of assets, by major category, measured at fair value on a nonrecurring basis	Non-Recurring Fair Value Measurement The following table summarizes the fair value assets accounted for at fair value on a non-recurring Millions of Dollars Fair Value Measurements Using Fair Value Level 1 Inputs Level 2 Inputs Level 3 Inputs Before-Tax Loss Year Net PP&E (held for sale) $ 194 194 - - 351 166 166 - - 28 Equity Method Investments 171 171 - - 60 30 - 30 - 95 Year Net PP&E (held for sale) $ 250 - - 250 44 201 201 - - 43
Commodity derivative and financial instruments	The following table summarizes the net fair setoff exists for commodity derivatives): Millions of Dollars Carrying Amount Fair Value 2019 2018 2019 2018 Financial assets Investment in Cenovus Energy $ 2,111 1,462 2,111 1,462 Commodity derivatives 125 170 125 170 Investments in debt securities 241 - 241 - Total loans and advances—related parties 339 468 339 468 Financial liabilities Total debt, excluding finance leases 14,175 14,191 18,108 16,147 Commodity derivatives 106 110 106 110

Equity (Tables)

Equity (Tables)	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Changes in shares of common stock	Note 16—Equity Common Stock The changes in our shares of common stock, as categorized Shares 2019 2018 2017 Issued Beginning of year 1,791,637,434 1,785,419,175 1,782,079,107 Distributed under benefit plans 4,014,769 6,218,259 3,340,068 End of year 1,795,652,203 1,791,637,434 1,785,419,175 Held in Treasury Beginning of year 653,288,213 608,312,034 544,809,771 Repurchase of common stock 57,495,601 44,976,179 63,502,263 End of year 710,783,814 653,288,213 608,312,034

Non Mineral Leases (Tables)

Non Mineral Leases (Tables)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Lease, Assets And Liabilities [Table Text Block]	Millions of Dollars * Includes proportionately consolidated finance lease assets (net of 335 Millions of Dollars Short-term debt and long-term debt include proportionately consolidated finance 56 579
Lease, Cost [Table Text Block]	The following table summarizes our lease costs Millions of Dollars 2019 Lease Cost * Operating lease cost $ 341 Finance lease cost Amortization of right-of-use assets 99 Interest on lease liabilities 37 Short-term lease cost ** 77 Total lease cost *** $ 554 *The amounts presented in the table above have not been adjusted to reflect amounts recovered or reimbursed from oil and gas coventurers. 31 18 ***Variable lease cost and sublease income are immaterial for the period presented and therefore are not included in the table above. The following table summarizes the lease terms December 31, 2019 Lease Term and Discount Rate Weighted-average term (years) Operating leases 5.19 Finance leases 8.70 Weighted-average discount rate (percent) Operating leases 3.10 Finance leases 5.53 The following table summarizes other lease information Millions of Dollars 2019 Other Information * Cash paid for amounts included in the measurement Operating cash flows from operating leases $ 203 Operating cash flows from finance leases 27 Financing cash flows from finance leases 81 Right-of-use assets obtained in exchange for $ 499 Right-of-use assets obtained in exchange for 26 *The amounts presented in the table above have not been adjusted to reflect amounts recovered or reimbursed from oil and gas coventurers. addition, are reported in the "Cash Flows From Investing Activities" section of our consolidated statement of cash flows.
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	The following table summarizes future lease Millions of Dollars Operating Leases Finance Maturity of Lease Liabilities 2020 $ 348 120 2021 247 104 2022 130 102 2023 82 88 2024 63 84 Remaining years 149 382 Total * 1,019 880 Less: portion representing imputed interest (87) (160) Total lease liabilities $ 932 720 *Future lease payments for operating and finance leases commencing on components in accordance with our election to adopt the optional practical components for accounting purposes. company have been included in the table on a proportionate basis consistent company or oil and gas venture.
Finance Lease, Liability, Maturity [Table Text Block]	The following table summarizes future lease Millions of Dollars Operating Leases Finance Maturity of Lease Liabilities 2020 $ 348 120 2021 247 104 2022 130 102 2023 82 88 2024 63 84 Remaining years 149 382 Total * 1,019 880 Less: portion representing imputed interest (87) (160) Total lease liabilities $ 932 720 *Future lease payments for operating and finance leases commencing on components in accordance with our election to adopt the optional practical components for accounting purposes. company have been included in the table on a proportionate basis consistent company or oil and gas venture.
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]	At December 31, 2018, future minimum payments ASC Topic 840 were: Millions of Dollars 2019 $ 118 2020 116 2021 100 2022 98 2023 87 Remaining years 453 Total 972 Less: portion representing imputed interest (195) Capital lease obligations $ 777
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	At December 31, 2018, future undiscounted minimum leases pursuant to ASC Topic 840 were: Millions of Dollars 2019 $ 248 2020 425 2021 136 2022 319 2023 54 Remaining years 212 Total 1,394 Less: income from subleases (7) Net minimum operating lease payments $ 1,387
Schedule of Rent Expense [Table Text Block]	For the years ended December 31, operating Millions of Dollars 2018 2017 Total rentals $ 253 264 Less: sublease rentals (16) (20) $ 237 244

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2019
Compensation And Retirement Disclosure [Abstract]
Pension and Postretirement Plans	An analysis of the projected benefit obligations our postretirement health and life insurance plans Millions of Dollars Pension Benefits Other Benefits 2019 2018 2019 2018 U.S. Int’l. U.S. Int’l. Change in Benefit Obligation Benefit obligation at January 1 $ 2,136 3,438 3,236 3,845 218 265 Service cost 79 69 83 81 1 1 Interest cost 79 97 99 107 8 8 Plan participant contributions - 2 - 2 20 22 Plan amendments - - - 7 - - Actuarial (gain) loss 278 387 (44) (259) 27 (10) Benefits paid (253) (147) (507) (143) (59) (67) Curtailment - (69) (4) (3) - - Settlement - - (730) - - - Recognition of termination benefits - 1 3 - - - Foreign currency exchange rate change - 102 - (199) 1 (1) Benefit obligation at December 31* $ 2,319 3,880 2,136 3,438 216 218 *Accumulated benefit obligation portion of above at $ 2,161 3,594 1,969 3,066 Change in Fair Value of Plan Assets Fair value of plan assets at January 1 $ 1,336 3,358 2,541 3,647 - - Actual return on plan assets 273 529 (112) (106) - - Company contributions 235 464 144 156 39 45 Plan participant contributions - 2 - 2 20 22 Benefits paid (253) (147) (507) (143) (59) (67) Settlement - - (730) - - - Foreign currency exchange rate change - 100 - (198) - - Fair value of plan assets at December 31 $ 1,591 4,306 1,336 3,358 - - Funded Status $ (728) 426 (800) (80) (216) (218)
Amounts Recognized in the Consolidated Balance Sheet	Millions of Dollars
Weighted-Average Assumptions Used to Determine Benefit Obligations and Net Periodic Benefit Cost	Millions of Dollars
Before tax amounts unrecognized in net periodic postretirement benefit cost	Included in accumulated other comprehensive amounts that had not been recognized in net Millions of Dollars Pension Benefits Other Benefits 2019 2018 2019 2018 U.S. Int’l. U.S. Int’l. Unrecognized net actuarial (gain) loss $ 479 227 516 310 8 (21) Unrecognized prior service cost (credit) - (2) - (4) (183) (216)
Sources of change in other comprehensive income	Millions of Dollars
Amounts included in accumulated other comprehensive income that are expected to be amortized into net periodic postretirement cost	Included in accumulated other comprehensive amounts that are expected to be amortized into Millions of Dollars Pension Other Benefits Benefits U.S. Int’l. Unrecognized net actuarial (gain) loss $ 50 23 1 Unrecognized prior service credit - (2) (31)
Net periodic benefit cost of all defined benefit plans	The components of net periodic benefit cost of Millions of Dollars Pension Benefits Other Benefits 2019 2018 2017 2019 2018 2017 U.S. Int’l. U.S. Int’l. U.S. Int’l. Components of Net Periodic Benefit Cost Service cost $ 79 69 83 81 89 77 1 1 2 Interest cost 79 97 99 107 118 103 8 8 9 Expected return on plan assets (74) (138) (114) (155) (132) (158) - - - Amortization of prior service cost (credit) - (2) - (5) 4 (6) (33) (35) (36) Recognized net actuarial loss (gain) 54 32 53 31 69 50 (2) (1) (3) Settlements 62 - 196 - 131 - - - - Net periodic benefit cost $ 200 58 317 59 279 66 (26) (27) (28)
Fair values of our pension plan assets	The fair values of our pension plan assets at Millions of Dollars U.S. International Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total 2019 Equity securities U.S. $ 94 - 7 101 435 - - 435 International 98 - - 98 266 - - 266 Mutual funds 93 - - 93 245 267 - 512 Debt securities Government - - - - 1,412 - - 1,412 Corporate - 2 - 2 - - - - Mutual funds - - - - 392 - - 392 Cash and cash equivalents - - - - 98 - - 98 Derivatives - - - - 11 - - 11 Real estate - - - - - - 132 132 Total in fair value hierarchy $ 285 2 7 294 2,859 267 132 3,258 Investments measured at net asset value* Equity securities Common/collective trusts $ - - - 457 - - - 167 Debt securities Common/collective trusts - - - 637 - - - 760 Cash and cash equivalents - - - 25 - - - - Real estate - - - 83 - - - 112 Total** $ 285 2 7 1,496 2,859 267 132 4,297 The fair values of our pension plan assets at Millions of Dollars U.S. International Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total 2018 Equity securities U.S. $ 74 - 20 94 371 - - 371 International 80 - - 80 241 - - 241 Mutual funds 76 - - 76 213 181 - 394 Debt securities Government - - - - 889 - - 889 Corporate - 2 - 2 - - - - Mutual funds - - - - 363 - - 363 Cash and cash equivalents - - - - 71 - - 71 Time deposits - - - - 6 - - 6 Derivatives - - - - (17) - - (17) Real estate - - - - - - 124 124 Total in fair value hierarchy $ 230 2 20 252 2,137 181 124 2,442 Investments measured at net asset value* Equity securities Common/collective trusts $ - - - 364 - - - 153 Debt securities Common/collective trusts - - - 548 - - - 641 Cash and cash equivalents - - - 5 - - - - Real estate - - - 80 - - - 109 Total** $ 230 2 20 1,249 2,137 181 124 3,345
Benefit payments excluding the participating annuity contract and which reflect expected future service, as appropriate, are expected to be paid:	The following benefit payments, which are exclusive and which reflect expected future service, as appropriate, Millions of Dollars Pension Other Benefits Benefits U.S. Int’l. 2020 $ 447 150 32 2021 270 156 29 2022 250 158 27 2023 217 163 24 2024 220 170 22 2025–2029 822 927 64
Share-based compensation expense recognized in income and the associated tax benefit	Compensation Expense —Total share-based compensation expense recognized in income (loss) and the associated tax benefit for the years ended Millions of Dollars 2019 2018 2017 Compensation cost $ 274 265 227 Tax benefit 71 64 76
Significant assumptions used to calculate the fair market values	The fair market values of the options granted in Black-Scholes-Merton option-pricing model. 2017 Assumptions used Risk-free interest rate 2.24 % Dividend yield 4.00 % Volatility 28.12 % Expected life (years) 6.39
Summary of stock option activity	The following summarizes our stock option activity Millions of Dollars Weighted-Average Aggregate Options Exercise Price Intrinsic Value Outstanding at December 31, 2018 19,379,677 $ 52.88 $ 214 Exercised (1,339,480) 36.28 39 Forfeited - Expired or cancelled - Outstanding at December 31, 2019 18,040,197 $ 54.11 $ 206 Vested at December 31, 2019 17,922,026 $ 54.14 $ 205 Exercisable at December 31, 2019 17,172,815 $ 54.33 $ 194
Summary of restricted stock unit activity	The following summarizes our stock-settled stock Weighted-Average Millions of Dollars Stock Units Grant Date Fair Value Total Fair Value Outstanding at December 31, 2018 7,546,973 $ 43.41 Granted 2,045,503 67.77 Forfeited (99,748) 62.93 Issued (3,269,682) 34.32 $ 225 Outstanding at December 31, 2019 6,223,046 $ 55.99 Not Vested at December 31, 2019 4,185,141 56.17 The following summarizes our cash-settled stock Weighted-Average Millions of Dollars Stock Units Grant Date Fair Value Total Fair Value Outstanding at December 31, 2018 376,608 $ 62.21 Granted 319,552 68.20 Forfeited (6,914) 61.35 Issued (92,255) 61.61 $ 6 Outstanding at December 31, 2019 596,991 $ 64.54 Not Vested at December 31, 2019 153,457 64.54
Summary of Performance Share Program activity	The following summarizes our stock-settled Performance December 31, 2019: Weighted-Average Millions of Dollars Stock Units Grant Date Fair Value Total Fair Value Outstanding at December 31, 2018 2,335,542 $ 50.45 Granted 77,841 68.90 Forfeited - Issued (388,559) 53.66 $ 25 Outstanding at December 31, 2019 2,024,824 $ 50.55 Not Vested at December 31, 2019 15,616 $ 47.80 The following summarizes our cash-settled Performance December 31, 2019: Weighted-Average Millions of Dollars Stock Units Grant Date Fair Value Total Fair Value Outstanding at December 31, 2018 1,131,007 $ 62.21 Granted 1,958,043 68.90 Forfeited - Settled (2,479,776) 69.10 $ 171 Outstanding at December 31, 2019 609,274 $ 64.54 Not Vested at December 31, 2019 38,487 $ 64.54
Summary of aggregate activity of restricted shares and units	The following summarizes the aggregate activity December 31, 2019: Weighted-Average Millions of Dollars Stock Units Grant Date Fair Value Total Fair Value Outstanding at December 31, 2018 1,107,315 $ 46.57 Granted 64,063 63.58 Cancelled (2,307) 23.73 Issued (177,163) 49.23 $ 11 Outstanding at December 31, 2019 991,908 $ 47.24
Severance accrual	Millions of Dollars

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Income Taxes [Abstract]
Income taxes charged to income (loss)	Note 19—Income Taxes Income taxes charged to net income (loss) were: Millions of Dollars 2019 2018 2017 Income Taxes Federal Current $ 18 4 79 Deferred (113) 545 (3,046) Foreign Current 2,545 3,273 1,729 Deferred (323) (166) (510) State and local Current 148 108 51 Deferred (8) (96) (125) $ 2,267 3,668 (1,822)
Components of deferred tax liabilities and assets	Deferred income taxes reflect the net tax effect of temporary assets and liabilities for financial reporting purposes of deferred tax liabilities and assets at December Millions of Dollars 2019 2018 Deferred Tax Liabilities PP&E and intangibles $ 8,660 8,004 Inventory 35 60 Deferred state income tax - 61 Other 234 156 Total deferred tax liabilities 8,929 8,281 Deferred Tax Assets Benefit plan accruals 542 641 Asset retirement obligations and accrued environmental 2,339 2,891 Investments in joint ventures 1,722 104 Other financial accruals and deferrals 777 330 Loss and credit carryforwards 8,968 2,378 Other 345 398 Total deferred tax assets 14,693 6,742 Less: valuation allowance (10,214) (3,040) Net deferred tax assets 4,479 3,702 Net deferred tax liabilities $ 4,450 4,579
Components of loss and credit carryforwards and applicable valulation allowances	At December 31, 2019, the components of the applicable valuation allowances were: Millions of Dollars Net Deferred Expiration of Gross Deferred Tax Asset After Net Deferred Tax Asset Valuation Allowance Tax Asset U.S. foreign tax credits $ 7,696 14 2028 U.S. general business credits 250 250 2036-2038 U.S. capital loss 202 32 2024 State net operating losses and tax credits 370 50 Various Foreign net operating losses and tax credits 450 413 Post 2025 $ 8,968 759
Reconciliation of the beginning and ending unrecognized tax benefits	The following table shows a reconciliation 2018 and 2017: Millions of Dollars 2019 2018 2017 Balance at January 1 $ 1,081 882 381 Additions based on tax positions related to the current 9 268 612 Additions for tax positions of prior years 120 43 109 Reductions for tax positions of prior years (22) (73) (129) Settlements (9) (35) (5) Lapse of statute (2) (4) (86) Balance at December 31 $ 1,177 1,081 882
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	The amounts of U.S. and foreign income (loss) statutory rate with the provision for income taxes, Millions of Dollars Percent of Pre-Tax Income (Loss) 2019 2018 2017 2019 2018 2017 Income (loss) before income taxes United States $ 4,704 2,867 (5,250) 49.4 % 28.7 200.8 Foreign 4,820 7,106 2,635 50.6 71.3 (100.8) $ 9,524 9,973 (2,615) 100.0 % 100.0 100.0 Federal statutory income tax $ 2,000 2,095 (915) 21.0 % 21.0 35.0 Non-U.S. effective tax rates 1,399 1,766 625 14.7 17.7 (23.9) Tax Legislation - (10) (852) - (0.1) 32.6 Canada disposition - - (1,277) - - 48.8 U.K. disposition (732) (150) - (7.7) (1.5) - Recovery of outside basis (77) (21) (962) (0.8) (0.2) 36.8 Adjustment to tax reserves 9 (4) 881 0.1 - (33.7) Adjustment to valuation allowance (225) (26) - (2.4) (0.3) - APLNG impairment - - 834 - - (31.9) State income tax 123 135 (84) 1.3 1.4 3.2 Malaysia Deepwater Incentive (164) - - (1.7) - - Enhanced oil recovery credit (27) (99) (68) (0.3) (1.0) 2.6 Other (39) (18) (4) (0.4) (0.2) 0.2 $ 2,267 3,668 (1,822) 23.8 % 36.8 69.7

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated other comprehensive income in the equity section of the balance sheet included	Note 20—Accumulated Other Comprehensive Loss Accumulated other comprehensive loss in the Millions of Dollars Defined Benefit Plans Net Unrealized Loss on Securities Foreign Currency Translation Accumulated Other Comprehensive Loss December 31, 2016 $ (547) - (5,646) (6,193) Other comprehensive income (loss) 147 (58) 586 675 December 31, 2017 (400) (58) (5,060) (5,518) Other comprehensive income (loss) 39 - (642) (603) Cumulative effect of adopting ASU No. 2016-01* - 58 - 58 December 31, 2018 (361) - (5,702) (6,063) Other comprehensive income 51 - 695 746 Cumulative effect of adopting ASU No. 2018-02** (40) - - (40) December 31, 2019 $ (350) - (5,007) (5,357) — Changes in Accounting Principles for additional information. During 2019, we recognized $ 483 of our sale of two ConocoPhillips U.K. subsidiaries. Note 5—Asset Acquisitions and Dispositions. There were no items within accumulated other comprehensive
Items reclassified out of accumulated other comprehensive income (loss)	The following table summarizes reclassifications ended December 31: Millions of Dollars 2019 2018 Defined Benefit Plans $ 88 189 Above amounts are included in the computation of net periodic benefit cost are presented net of tax expense of: $ 23 50 See Note 18—Employee Benefit Plans, for additional information.

Cash Flow Information (Tables)

Cash Flow Information (Tables)	12 Months Ended
	Dec. 31, 2019
Cash Flow Information [Abstract]
Cash Flow Information	Note 21—Cash Flow Information Millions of Dollars 2019 2018 2017 Noncash Investing Activities Increase (decrease) in PP&E related to an increase retirement obligations $ 205 395 (37) Increase (decrease) in assets and liabilities exchange* Accounts receivable - (44) - Inventories - 42 - Investments and long-term receivables - 15 - PP&E - 1,907 - Other long-term assets - (9) - Accounts payable - 7 - Accrued income and other taxes - 40 - Cash Payments Interest $ 810 772 1,163 Income taxes 2,905 2,976 1,168 Net Sales (Purchases) of Investments Short-term investments purchased $ (4,902) (1,953) (6,617) Short-term investments sold 2,138 3,573 4,827 Investments and long-term receivables purchased (146) - - $ (2,910) 1,620 (1,790) *See Note 5—Asset Acquisitions and Dispositions.

Other Financial Information (Ta

Other Financial Information (Tables)	12 Months Ended
	Dec. 31, 2019
Other Financial Information [Abstract]
Other Financial Information	Note 22—Other Financial Information Millions of Dollars 2019 2018 2017 Interest and Debt Expense Incurred Debt $ 799 838 1,114 Other 36 67 103 835 905 1,217 Capitalized (57) (170) (119) Expensed $ 778 735 1,098 Other Income Interest income $ 166 97 112 Unrealized gains (losses) on Cenovus Energy common shares* 649 (437) - Other, net 543 513 417 $ 1,358 173 529 *See Note 7—Investment in Cenovus Energy, for additional information. Research and Development Expenditures —expensed $ 82 78 100 Shipping and Handling Costs $ 1,008 1,075 1,050 Foreign Currency Transaction (Gains) Losses —after-tax Alaska $ - - - Lower 48 - - - Canada 5 (11) 3 Europe and North Africa - (26) 7 Asia Pacific and Middle East 31 3 23 Other International 1 - 1 Corporate and Other 21 21 (3) $ 58 (13) 31
Property, Plant And Equipment [Table Text Block]	Millions of Dollars

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2019
Related Party Transactions [Abstract]
Significant transactions with related parties	Note 23—Related Party Transactions Our related parties primarily include equity method Significant transactions with our equity affiliates Millions of Dollars 2019 2018 2017 Operating revenues and other income $ 89 98 107 Purchases 38 98 99 Operating expenses and selling, general and administrative 65 60 59 Net interest (income) expense* (13) (14) (13) *We paid interest to, or received interest from,

Sales and Other Operating Rev_2

Sales and Other Operating Revenues (Tables)	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue [Table Text Block]	Millions of Dollars Millions of Dollars Millions of Dollars
Contract with Customer, Asset and Liability [Table Text Block]	Millions of Dollars

Segment Disclosures and Relat_2

Segment Disclosures and Related Information (Tables)	12 Months Ended
	Dec. 31, 2019
Segment Disclosures and Related Information [Abstract]
Sales and Other Operating Revenues	Analysis of Results by Operating Segment Millions of Dollars 2019 2018 2017 Sales and Other Operating Revenues Alaska $ 5,483 5,740 4,224 Lower 48 15,514 17,029 12,968 Intersegment eliminations (46) (40) (4) Lower 48 15,468 16,989 12,964 Canada 2,910 3,184 3,178 Intersegment eliminations (1,141) (1,160) (559) Canada 1,769 2,024 2,619 Europe and North Africa 5,101 6,635 5,181 Asia Pacific and Middle East 4,525 4,861 4,014 Other International - - - Corporate and Other 221 168 104 Consolidated sales and other operating revenues $ 32,567 36,417 29,106
Depreciation, Depletion, Amortization and Impairments	Depreciation, Depletion, Amortization and Impairments Alaska $ 805 760 1,026 Lower 48 3,224 2,370 6,693 Canada 232 324 461 Europe and North Africa 887 1,041 1,313 Asia Pacific and Middle East 1,285 1,382 3,819 Other International - - - Corporate and Other 62 106 134 Consolidated depreciation, depletion, amortization $ 6,495 5,983 13,446 The market for our products is large and diverse, therefore, dependent upon any single customer.
Equity in Earnings of Affiliates	Millions of Dollars
Income Taxes	Income Taxes Alaska $ 472 376 (689) Lower 48 137 474 (2,453) Canada (43) (96) (616) Europe and North Africa 1,435 2,265 1,165 Asia Pacific and Middle East 491 722 351 Other International 8 30 21 Corporate and Other (233) (103) 399 Consolidated income taxes $ 2,267 3,668 (1,822)
Net Income Attributable to ConocoPhillips	Net Income (Loss) Attributable to ConocoPhillips Alaska $ 1,520 1,814 1,466 Lower 48 436 1,747 (2,371) Canada 279 63 2,564 Europe and North Africa 2,724 1,866 553 Asia Pacific and Middle East 1,929 2,070 (1,098) Other International 263 364 167 Corporate and Other 38 (1,667) (2,136) Consolidated net income (loss) attributable $ 7,189 6,257 (855)
Investments In and Advances To Affiliates	Investments in and Advances to Affiliates Alaska $ 83 86 56 Lower 48 35 378 402 Canada - - - Europe and North Africa 54 55 55 Asia Pacific and Middle East 8,281 8,821 9,077 Other International - - - Corporate and Other - - - Consolidated investments in and advances to affiliates $ 8,453 9,340 9,590
Total Assets	Millions of Dollars
Capital Expenditures and Investments	Capital Expenditures and Investments Alaska $ 1,513 1,298 815 Lower 48 3,394 3,184 2,136 Canada 368 477 202 Europe and North Africa 708 877 872 Asia Pacific and Middle East 584 718 482 Other International 8 6 21 Corporate and Other 61 190 63 Consolidated capital expenditures and investments $ 6,636 6,750 4,591
Interest Income and Expense	Interest Income and Expense Interest income Alaska $ - - - Lower 48 - - - Canada - - - Europe and North Africa 2 2 2 Asia Pacific and Middle East 15 15 9 Other International - - - Corporate and Other 149 80 101 Interest and debt expense Corporate and Other $ 778 735 1,098
Geographic Information	Geographic Information Millions of Dollars Sales and Other Operating Revenues (1) Long-Lived Assets (2) 2019 2018 2017 2019 2018 2017 United States (3) $ 21,159 22,740 17,204 26,566 26,838 23,623 Australia and Timor-Leste (4) 1,647 1,798 1,448 7,228 9,301 9,657 Canada 1,769 2,024 2,619 5,769 5,333 5,613 China 772 836 712 1,447 1,380 1,275 Indonesia 875 886 757 605 669 758 Libya 1,103 1,142 586 668 679 699 Malaysia 1,230 1,346 1,103 1,871 2,327 2,736 Norway 2,349 2,886 2,348 5,258 5,582 6,154 United Kingdom 1,649 2,606 2,248 2 1,583 3,335 Other foreign countries 14 153 81 1,308 1,346 1,423 Worldwide consolidated $ 32,567 36,417 29,106 50,722 55,038 55,273
Sales and Other Operating Revenues by Product	Sales and Other Operating Revenues by Crude oil $ 18,482 19,571 13,260 Natural gas 8,715 10,720 10,773 Natural gas liquids 814 1,114 1,102 Other* 4,556 5,012 3,971 Consolidated sales and other operating revenues $ 32,567 36,417 29,106 *Includes LNG and bitumen.

Supplementary Information - C_2

Supplementary Information - Condensed Consolidating Financial Information (Tables)	12 Months Ended
	Dec. 31, 2019
Supplementary Information - Condensed Consolidating Financial Information [Abstract]
Condensed Consolidated Income Statement	Millions of Dollars Millions of Dollars
Schedule of Condensed Balance Sheet	Millions of Dollars
Condensed Consolidated Statement of Cash Flows	Millions of Dollars Millions of Dollars

Schedule II (Tables)

Schedule II (Tables)	12 Months Ended
	Dec. 31, 2019
Valuation and Qualifying Accounts [Abstract]
Schedule Of Valuation And Qualifying Accounts Disclosure Table TextBlock	SCHEDULE II—VALUATION ConocoPhillips Millions of Dollars Balance at Charged to Balance at Description January 1 Expense Other (a) Deductions December 31 2019 Deducted from asset accounts: Allowance for doubtful accounts and notes receivable $ 25 5 - (17) (b) 13 Deferred tax asset valuation allowance 3,040 7,376 (26) (176) 10,214 Included in other liabilities: Restructuring accruals 48 (1) - (24) (c) 23 2018 Deducted from asset accounts: Allowance for doubtful accounts and notes receivable $ 4 23 - (2) (b) 25 Deferred tax asset valuation allowance 1,254 2,067 (8) (273) 3,040 Included in other liabilities: Restructuring accruals 53 70 (2) (73) (c) 48 2017 Deducted from asset accounts: Allowance for doubtful accounts and notes receivable $ 5 2 - (3) (b) 4 Deferred tax asset valuation allowance 675 560 19 - 1,254 Included in other liabilities: Restructuring accruals 80 65 1 (93) (c) 53 (a)Represents acquisitions/dispositions/revisions and the effect of translating foreign financial statements. (b)Amounts charged off less recoveries of amounts previously charged off. (c)Benefit payments. See Note 19 — Income Taxes, in the Notes to Consolidated Financial Statements, for additional information related to our deferred tax asset valuation allowance.

Accounting Policies - Textuals

Accounting Policies - Textuals (Details)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Number of operating segments	6
Revenue, Performance Obligation, Description of Payment Terms	Payment is typically due within 30 days or less.

Change in Accounting Principl_2

Change in Accounting Principles (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Liability	$ 932
Accumulated Other Comprehensive Income (Loss), Net of Tax	(5,357)		$ (6,063)	$ (5,518)	$ (6,193)
Retained Earnings (Accumulated Deficit)	$ 39,742		34,010
Accounting Standards Update 2016-02 (Topic 842) [Member] | Restatement Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Right-of-Use Asset		$ 998
ASU 2018-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax		(6,103)
Retained Earnings (Accumulated Deficit)		34,050
ASU 2018-02 [Member] | ScenarioPreviouslyReportedMember [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax			(6,063)
Retained Earnings (Accumulated Deficit)			$ 34,010
ASU 2018-02 [Member] | Restatement Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Right-of-Use Asset		998
Operating Lease, Liability		998
Accumulated Other Comprehensive Income (Loss), Net of Tax		(40)
Retained Earnings (Accumulated Deficit)		$ 40

Variable Interest Entities (V_2

Variable Interest Entities (VIEs) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule Of Equity Method Investments [Line Items]
Book value of equity method investment		$ 8,234	$ 9,005
Income (Loss) From Equity Method Investments		$ 779	$ 1,074	$ 772
MWCC LLC [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership percentage in equity investment		10.00%
Australia Pacific LNG [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership percentage in equity investment		37.50%
MWCC LLC [Member] | MWCC LLC [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership percentage in equity investment		10.00%
Book value of equity method investment	$ 30	$ 24
Income (Loss) From Equity Method Investments	$ (95)

Inventories (Details)

Inventories (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Inventory, Net [Abstract]
Crude oil and natural gas	$ 472	$ 432
Materials and supplies	554	575
Inventory Net	$ 1,026	$ 1,007

Inventory Disclosure - Narrativ

Inventory Disclosure - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Inventory, Net [Abstract]
Inventories valued on the LIFO basis	$ 286	$ 292
Excess of current replacement cost over LIFO cost of inventories	$ 155	$ 75

Assets Held for Sale, Sold or_2

Assets Held for Sale, Sold or Acquired Textuals (Details) - USD ($) $ / shares in Units, shares in Millions

1 Months Ended

3 Months Ended

5 Months Ended

7 Months Ended

12 Months Ended

Jan. 31, 2020

Oct. 31, 2019

Sep. 30, 2019

Apr. 30, 2019

Oct. 31, 2018

Sep. 30, 2017

Dec. 31, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

May 17, 2017

Jul. 31, 2017

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Dec. 02, 2019

Jan. 31, 2019

Dec. 18, 2018

Income related items for assets held for sale [Abstract]

Income (Loss) From Equity Method Investments

$ 779,000,000

$ 1,074,000,000

$ 772,000,000

Exploration Expense

743,000,000

369,000,000

[1]

934,000,000

[1]

Gain (Loss) on Disposition of Oil and Gas Property [Abstract]

Other income

1,358,000,000

173,000,000

529,000,000

Equity Method Investments

$ 8,234,000,000

$ 9,005,000,000

8,234,000,000

9,005,000,000

Operating Segments [Member]

Income related items for assets held for sale [Abstract]

Income (Loss) From Equity Method Investments

779,000,000

1,074,000,000

772,000,000

Corporate, Non-Segment [Member]

Income related items for assets held for sale [Abstract]

Income (Loss) From Equity Method Investments

0

0

0

Alaska Segment [Member] | Operating Segments [Member]

Income related items for assets held for sale [Abstract]

Income (Loss) From Equity Method Investments

7,000,000

6,000,000

7,000,000

Lower 48 Segment [Member] | Operating Segments [Member]

Income related items for assets held for sale [Abstract]

Income (Loss) From Equity Method Investments

(159,000,000)

1,000,000

5,000,000

Canada Segment [Member] | Operating Segments [Member]

Income related items for assets held for sale [Abstract]

Income (Loss) From Equity Method Investments

0

0

197,000,000

Asia Pacific and Middle East Segment [Member] | Operating Segments [Member]

Income related items for assets held for sale [Abstract]

Income (Loss) From Equity Method Investments

915,000,000

1,051,000,000

553,000,000

Europe and North Africa Segment [Member] | Operating Segments [Member]

Income related items for assets held for sale [Abstract]

Income (Loss) From Equity Method Investments

16,000,000

16,000,000

10,000,000

Australia West Assets [Member] | Asia Pacific and Middle East Segment [Member] | Operating Segments [Member]

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Net carrying value

$ 600,000,000

Amount of PP&E in carrying value of asset

1,200,000,000

1,200,000,000

1,200,000,000

Working Capital and cash in net carrying value

(300,000,000)

Amount of deferred taxes in carrying value of asset

(200,000,000)

Income related items for assets held for sale [Abstract]

Results Of Operations Income Before Income Taxes

372,000,000

364,000,000

317,000,000

Australia West Assets [Member] | Asia Pacific and Middle East Segment [Member] | Operating Segments [Member] | Scenario Plan [Member]

Asset Held For Sale Transaction Detail [Abstract]

Proceeds from asset dispositions

1,390,000,000

Australia West Sale Contingent Proceeds upon Final Investment Decision

75,000,000

Australia West Assets [Member] | Asia Pacific and Middle East Segment [Member] | Operating Segments [Member] | Asset Retirement Obligation Costs [Member]

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Asset Retirement Obligation of held for sale or sold

$ 700,000,000

$ 700,000,000

$ 700,000,000

Barossa project [Member] | Asia Pacific and Middle East Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Ownership Percent

37.50%

37.50%

Caldita Field [Member] | Asia Pacific and Middle East Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Ownership Percent

37.50%

37.50%

Darwin LNG Facility [Member] | Asia Pacific and Middle East Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Ownership Percent

56.90%

56.90%

Bayu-Undan Field [Member] | Asia Pacific and Middle East Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Ownership Percent

56.90%

56.90%

Poseidon Field [Member] | Asia Pacific and Middle East Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Ownership Percent

40.00%

40.00%

Athena Field [Member] | Asia Pacific and Middle East Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Ownership Percent

50.00%

50.00%

Niobrara [Member] | Lower 48 Segment [Member] | Operating Segments [Member]

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Net carrying value

$ 390,000,000

Amount of PP&E in carrying value of asset

$ 426,000,000

$ 426,000,000

426,000,000

Income related items for assets held for sale [Abstract]

Results Of Operations Income Before Income Taxes

(372,000,000)

35,000,000

(12,000,000)

Impairment of assets in exchange

379,000,000

Exploration Expense

7,000,000

Niobrara [Member] | Lower 48 Segment [Member] | Operating Segments [Member] | Scenario Plan [Member]

Asset Held For Sale Transaction Detail [Abstract]

Proceeds from asset dispositions

380,000,000

Niobrara [Member] | Lower 48 Segment [Member] | Operating Segments [Member] | Asset Retirement Obligation Costs [Member]

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Asset Retirement Obligation of held for sale or sold

34,000,000

34,000,000

$ 34,000,000

Golden Pass [Member] | Lower 48 Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Ownership percentage in equity investment

12.40%

Income related items for assets held for sale [Abstract]

Income (Loss) From Equity Method Investments

$ (60,000,000)

U.K. Subsidiaries [Member] | Europe and North Africa Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Proceeds from asset dispositions

$ 2,200,000,000

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Net carrying value

500,000,000

Amount of PP&E in carrying value of asset

1,600,000,000

Working Capital and cash in net carrying value

(100,000,000)

Amount of deferred taxes in carrying value of asset

300,000,000

Cumulative foreign currency translation adjustments

500,000,000

Income related items for assets held for sale [Abstract]

Results Of Operations Income Before Income Taxes

400,000,000

900,000,000

300,000,000

Gain (Loss) on Disposition of Oil and Gas Property [Abstract]

Before-tax gain (loss) on disposition

1,700,000,000

After-tax gain (loss) on disposition

2,100,000,000

2,100,000,000

U.K. Subsidiaries [Member] | Europe and North Africa Segment [Member] | Operating Segments [Member] | Scenario Plan [Member]

Asset Held For Sale Transaction Detail [Abstract]

Proceeds from asset dispositions

$ 2,675,000,000

U.K. Subsidiaries [Member] | Europe and North Africa Segment [Member] | Operating Segments [Member] | Asset Retirement Obligation Costs [Member]

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Asset Retirement Obligation of held for sale or sold

1,800,000,000

Greater Sunrise Fields [Member] | Asia Pacific and Middle East Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Proceeds from asset dispositions

$ 350,000,000

Ownership Percent

30.00%

Gain (Loss) on Disposition of Oil and Gas Property [Abstract]

After-tax gain (loss) on disposition

$ 52,000,000

Magnolia Field And Platform [Member] | Lower 48 Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Proceeds from asset dispositions

16,000,000

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Amount of PP&E in carrying value of asset

4,000,000

4,000,000

Gain (Loss) on Disposition of Oil and Gas Property [Abstract]

Before-tax gain (loss) on disposition

82,000,000

Magnolia Field And Platform [Member] | Lower 48 Segment [Member] | Operating Segments [Member] | Asset Retirement Obligation Costs [Member]

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Asset retirement obligation at disposal

$ 70,000,000

70,000,000

Other properties [Member] | Lower 48 Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Proceeds from asset dispositions

$ 112,000,000

Gain (Loss) on Disposition of Oil and Gas Property [Abstract]

Before-tax gain (loss) on disposition

$ 0

Other properties [Member] | Lower 48 Segment [Member] | Operating Segments [Member] | Scenario Plan [Member]

Asset Held For Sale Transaction Detail [Abstract]

Proceeds from asset dispositions

$ 186,000,000

Undeveloped Leasehold Assets [Member] | Lower 48 Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Proceeds from asset dispositions

162,000,000

$ 56,000,000

$ 105,000,000

Gain (Loss) on Disposition of Oil and Gas Property [Abstract]

Before-tax gain (loss) on disposition

140,000,000

0

Barnett [Member] | Lower 48 Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Proceeds from asset dispositions

$ 196,000,000

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Net carrying value

201,000,000

Amount of PP&E in carrying value of asset

250,000,000

Income related items for assets held for sale [Abstract]

Results Of Operations Income Before Income Taxes

(59,000,000)

(566,000,000)

Gain (Loss) on Disposition of Oil and Gas Property [Abstract]

Before-tax gain (loss) on disposition

5,000,000

Impaired Assets to be Disposed of by Method Other than Sale, Carrying Value of Asset

87,000,000

87,000,000

572,000,000

Barnett [Member] | Lower 48 Segment [Member] | Operating Segments [Member] | Asset Retirement Obligation Costs [Member]

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Asset retirement obligation at disposal

$ 49,000,000

U.K. subsidiary holding Clair field | Europe and North Africa Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Proceeds from asset dispositions

253,000,000

Ownership Percent

16.50%

Ownership percentage retained

7.50%

Fair Value Assets Disposed Of

$ 1,743,000,000

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Net carrying value

1,028,000,000

Amount of PP&E in carrying value of asset

1,553,000,000

Amount of deferred taxes in carrying value of asset

(485,000,000)

Income related items for assets held for sale [Abstract]

Results Of Operations Income Before Income Taxes

748,000,000

(400,000)

Gain (Loss) on Disposition of Oil and Gas Property [Abstract]

Before-tax gain (loss) on disposition

$ 715,000,000

U.K. subsidiary holding Clair field | Europe and North Africa Segment [Member] | Operating Segments [Member] | Asset Retirement Obligation Costs [Member]

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Asset Retirement Obligation of held for sale or sold

$ 59,000,000

Foster Creek Christina Lake (FCCL) and western Canada gas properties [Member] | Canada Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Proceeds from asset dispositions

$ 11,000,000,000

Shares Exchanged for Assets Held for Sale

208

Gain (Loss) on Disposition of Oil and Gas Property [Abstract]

Before-tax gain (loss) on disposition

$ 114,000,000

95,000,000

2,100,000,000

Business Combination, Contingent Consideration Arrangements [Abstract]

Assets Held for Sale, Contingent Consideration Term

The contingent payment, calculated and paid on a quarterly basis, is $6 million CAD for every $1 CAD by which the WCS quarterly average crude price exceeds $52 CAD per barrel.

Cenovus Energy common share price

$ 9.41

Cenovus Energy Investment at Cost

$ 1,960,000,000

Foster Creek Christina Lake (FCCL) [Member]

Asset Held For Sale Transaction Detail [Abstract]

Ownership percentage in equity investment

50.00%

Foster Creek Christina Lake (FCCL) [Member] | Canada Segment [Member] | Operating Segments [Member]

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Carrying Value of Equity Investment Sold

$ 8,900,000,000

Income related items for assets held for sale [Abstract]

Income (Loss) From Equity Method Investments

197,000,000

Western Canada Gas Properties [Member] | Canada Segment [Member] | Operating Segments [Member]

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Net carrying value

1,900,000,000

Amount of PP&E in carrying value of asset

2,600,000,000

Total current liabilities of assets held for sale

100,000,000

Income related items for assets held for sale [Abstract]

Results Of Operations Income Before Income Taxes

(26,000,000)

Western Canada Gas Properties [Member] | Canada Segment [Member] | Operating Segments [Member] | Asset Retirement Obligation Costs [Member]

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Asset Retirement Obligation of held for sale or sold

$ 585,000,000

San Juan Basin [Member] | Lower 48 Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Proceeds from asset dispositions

$ 2,500,000,000

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Net carrying value

2,500,000,000

Amount of PP&E in carrying value of asset

2,900,000,000

Income related items for assets held for sale [Abstract]

Results Of Operations Income Before Income Taxes

(3,200,000,000)

Impairment of asset held for sale

$ 3,300,000,000

Gain (Loss) on Disposition of Oil and Gas Property [Abstract]

Before-tax gain (loss) on disposition

$ (22,000,000)

$ 0

$ 28,000,000

Business Combination, Contingent Consideration Arrangements [Abstract]

Assets Held for Sale, Contingent Consideration Term

The transaction includes a contingent payment of up to $300 million. The six-year contingent payment, effective beginning January 1, 2018, is due annually for the periods in which the monthly U.S. Henry Hub price is at or above $3.20 per MMBTU.

San Juan Basin [Member] | Lower 48 Segment [Member] | Operating Segments [Member] | Scenario Plan [Member]

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Asset Retirement Obligation of held for sale or sold

$ 406,000,000

Panhandle [Member] | Lower 48 Segment [Member] | Operating Segments [Member]

Asset Held For Sale Transaction Detail [Abstract]

Proceeds from asset dispositions

$ 178,000,000

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Net carrying value

206,000,000

Amount of PP&E in carrying value of asset

279,000,000

Income related items for assets held for sale [Abstract]

Results Of Operations Income Before Income Taxes

$ (14,000,000)

Gain (Loss) on Disposition of Oil and Gas Property [Abstract]

Before-tax gain (loss) on disposition

$ (28,000,000)

Panhandle [Member] | Lower 48 Segment [Member] | Operating Segments [Member] | Asset Retirement Obligation Costs [Member]

Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]

Asset Retirement Obligation of held for sale or sold

$ 72,000,000

[1]

See Notes to Consolidated Financial Statements.

Aquisitons (Details)

Aquisitons (Details) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 18, 2018
Business Combinations [Abstract]
Property, Plant and Equipment, Net		$ 45,698,000,000	$ 42,269,000,000	$ 45,698,000,000
Capitalized Costs, Unproved Properties		4,662,000,000	3,980,000,000	4,662,000,000
Capitalized Costs Proved Properties		100,657,000,000	88,284,000,000	100,657,000,000
Inventories Acquired			0	42,000,000	$ 0
Investments and long-term receivables		9,329,000,000	8,687,000,000	9,329,000,000
Asset Retirement Obligation		7,908,000,000	$ 6,206,000,000	$ 7,908,000,000	$ 7,798,000,000
Kuparuk Assets [Member] | Alaska Segment [Member] | Operating Segments [Member]
Business Acquisition [Line Items]
Costs Incurred, Acquisition of Oil and Gas Properties, Total	$ 386,000,000	1,490,000,000
Percent Acquired	22.00%
Fair Value of Assets Acquired		1,743,000,000
Business Combinations [Abstract]
Capitalized Costs, Unproved Properties	$ 114,000,000
Capitalized Costs Proved Properties	297,000,000					$ 1,900,000,000
Inventories Acquired	20,000,000	$ 42,000,000
Investments and long-term receivables	14,000,000					15,000,000
Net Working Capital						(100,000,000)
Kuparuk Assets [Member] | Alaska Segment [Member] | Operating Segments [Member] | Asset Retirement Obligation Costs [Member]
Business Combinations [Abstract]
Asset Retirement Obligation	$ 59,000,000					$ 374,000,000

Investments, Loans and LT Recei

Investments, Loans and LT Receivables Components (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Summary of Investment Holdings [Line Items]
Equity investments	$ 8,234	$ 9,005
Loans and advances-related parties	219	335
Long-term receivables	243	238
Other investments	77	86
Total	8,906	9,664
Other Long-term Investments [Member]
Summary of Investment Holdings [Line Items]
Investments in long-term debt securities	$ 133	$ 0

Investments, Loans and LT Rec_2

Investments, Loans and LT Receivables - Financial Info (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Equity Method Investment, Summarized Financial Information [Abstract]
Revenues	$ 11,310	$ 11,654	$ 11,554
Income (loss) before income taxes	3,726	3,660	(2,875)
Net income (loss)	3,085	3,244	$ (1,431)
Current assets	3,289	3,285
Noncurrent assets	38,905	41,563
Current liabilities	2,603	2,625
Noncurrent liabilities	$ 22,168	$ 23,874

Investments, Loans and LT Rec_3

Investments, Loans and LT Receivables Textuals (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Sep. 30, 2018	Mar. 31, 2019	Jun. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2012
Schedule Of Equity Method Investments [Line Items]
Retained Earning Equity Method				$ 32
Equity Method Investment Dividends				1,378	$ 1,226	$ 605
Letters of Credit [Abstract]
Book value of equity method investment				8,234	9,005
Income (Loss) From Equity Method Investments				$ 779	1,074	772
Australia Pacific LNG [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership percentage in equity investment				37.50%
Letters of Credit [Abstract]
Total amount under revolving credit facilities							$ 8,500
Line of Credit Facility, Frequency of Payments				bi-annual
Balance Outstanding On Credit Facility				$ 6,700
Long Term Debt Refinanced Amount		$ 3,200
Before-Tax Loss - Equity method investments			$ 2,384
Book value of equity method investment				7,228
Historical cost basis				6,751
Difference between estimated value and book value of equity method investment				477
Amortizable portion of the basis difference in PPE				$ 36	$ 44	$ 100
Australia Pacific LNG [Member] | Export-Import Bank of US [Member]
Letters of Credit [Abstract]
Total amount under revolving credit facilities							2,900
Australia Pacific LNG [Member] | Export-Import Bank of China [Member]
Letters of Credit [Abstract]
Total amount under revolving credit facilities							2,700
Early Repayment of Senior Debt	$ 1,400	1,000
Line of Credit Facility, Frequency of Payments				bi-annual
Australia Pacific LNG [Member] | U S Private Placement Bond [Member]
Letters of Credit [Abstract]
Total amount under revolving credit facilities	$ 1,400
Australia Pacific LNG [Member] | Australian and International Commercial Bank Syndicate [Member]
Letters of Credit [Abstract]
Total amount under revolving credit facilities							$ 2,900
Early Repayment of Senior Debt		2,200
Australia Pacific LNG [Member] | Commerical Banks [Member]
Letters of Credit [Abstract]
Line of Credit Facility, Frequency of Payments				bi-annual
Long Term Debt Refinanced Amount		2,600
Australia Pacific LNG [Member] | U S Private Placement Bond Two [Member]
Letters of Credit [Abstract]
Total amount under revolving credit facilities		$ 600
Line of Credit Facility, Frequency of Payments				bi-annual
Australia Pacific LNG [Member] | Origin Energy [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership percentage in equity investment				37.50%
Australia Pacific LNG [Member] | Sinopec [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership percentage in equity investment				25.00%
QG3
Schedule Of Equity Method Investments [Line Items]
Ownership percentage in equity investment				30.00%
Letters of Credit [Abstract]
Total amount under revolving credit facilities				$ 4,000
Line of Credit Facility, Frequency of Payments				Semi-annual
Book value of equity method investment				$ 797
Loans to related parties				335
QG3 | Credit Agencies [Member]
Letters of Credit [Abstract]
Total amount under revolving credit facilities				1,300
QG3 | Commerical Banks [Member]
Letters of Credit [Abstract]
Total amount under revolving credit facilities				1,500
QG3 | ConocoPhillips [Member]
Letters of Credit [Abstract]
Total amount under revolving credit facilities				$ 1,200
QG3 | Mitsui & Co, Ltd. [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership percentage in equity investment				1.50%
QG3 | Qatar Petroleum [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership percentage in equity investment				68.50%

Investment in Cenovus Energy (D

Investment in Cenovus Energy (Details) - USD ($) $ / shares in Units, shares in Millions		5 Months Ended	12 Months Ended
		May 17, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Investment in Cenovus Energy			$ 2,111,000,000	$ 1,462,000,000
Unrealized Gain (Loss) on Securities, before tax	[1]		649,000,000	(437,000,000)	$ 0
Foster Creek Christina Lake (FCCL) [Member]
Schedule of Available-for-sale Securities [Line Items]
Ownership percentage in equity investment		50.00%
Common Stock [Member] | Cenovus Energy [Member]
Schedule of Available-for-sale Securities [Line Items]
Shares Exchanged for Assets Held for Sale		208
Percent of issued and outstanding common shares of Cenovus		16.90%
Investment In Equity Security Fair Value		$ 1,960,000,000	$ 2,110,000,000	$ 1,460,000,000
Cenovus Energy common share price		$ 9.41	$ 10.15
Unrealized Gain (Loss) on Securities, before tax			$ 649,000,000
[1]	*See Note 7—Investment in Cenovus Energy, for additional information.

Suspended Wells Net Changes in

Suspended Wells Net Changes in Well Costs (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net changes in suspended Exploratory well costs
Beginning balance	$ 856,000,000	$ 853,000,000	$ 1,063,000,000
Additions pending the determination of proved reserves	239,000,000	140,000,000	118,000,000
Reclassifications to proved properties	(11,000,000)	(37,000,000)	(66,000,000)
Sales of suspended wells	(54,000,000)	(93,000,000)	0
Charged to dry hole expense	(10,000,000)	(7,000,000)	(262,000,000)
Ending balance	$ 1,020,000,000	$ 856,000,000	$ 853,000,000

Suspended Wells Changes in Well

Suspended Wells Changes in Well Costs Narrative (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Capitalized Exploratory Well Costs	$ 1,020,000,000	$ 856,000,000	$ 853,000,000	$ 1,063,000,000
AUSTRALIA
Capitalized Exploratory Well Costs	$ 313,000,000

Suspended Wells - Aging of susp

Suspended Wells - Aging of suspended well balances (Details)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Aging of suspended well cost
Exploratory well costs capitalized for a period of one year or less	$ 206,000,000	$ 145,000,000	$ 67,000,000
Exploratory well costs capitalized for a period greater than one year	814,000,000	711,000,000	786,000,000
Ending balance	$ 1,020,000,000	$ 856,000,000	$ 853,000,000	$ 1,063,000,000
Number of projects that have exploratory well costs that have been capitalized for a period greater than one year	23	24	23

Suspended Wells-Exploratory Cap

Suspended Wells-Exploratory Capitalized Well Costs (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	$ 814	$ 711	$ 786
2016 - 2018 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	265
2013 - 2015 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	374
2004 - 2012 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	175
Greater Poseidon-Australia [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	177
Greater Poseidon-Australia [Member] | 2016 - 2018 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	0
Greater Poseidon-Australia [Member] | 2013 - 2015 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	157
Greater Poseidon-Australia [Member] | 2004 - 2012 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	20
NPR-A-Alaska [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	149
NPR-A-Alaska [Member] | 2016 - 2018 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	111
NPR-A-Alaska [Member] | 2013 - 2015 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	38
NPR-A-Alaska [Member] | 2004 - 2012 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	0
Barossa/Caldita-Australia [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	136
Barossa/Caldita-Australia [Member] | 2016 - 2018 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	59
Barossa/Caldita-Australia [Member] | 2013 - 2015 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	0
Barossa/Caldita-Australia [Member] | 2004 - 2012 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	77
Surmont - Canada
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	118
Surmont - Canada | 2016 - 2018 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	6
Surmont - Canada | 2013 - 2015 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	55
Surmont - Canada | 2004 - 2012 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	57
Middle Magdalena Basin-Columbia
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	68
Middle Magdalena Basin-Columbia | 2016 - 2018 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	0
Middle Magdalena Basin-Columbia | 2013 - 2015 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	68
Middle Magdalena Basin-Columbia | 2004 - 2012 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	0
Narwhal Trend Alaska [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	52
Narwhal Trend Alaska [Member] | 2016 - 2018 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	52
Narwhal Trend Alaska [Member] | 2013 - 2015 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	0
Narwhal Trend Alaska [Member] | 2004 - 2012 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	0
Kamunsu East-Malaysia
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	19
Kamunsu East-Malaysia | 2016 - 2018 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	0
Kamunsu East-Malaysia | 2013 - 2015 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	19
Kamunsu East-Malaysia | 2004 - 2012 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	0
NC 98-Libya
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	15
NC 98-Libya | 2016 - 2018 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	0
NC 98-Libya | 2013 - 2015 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	11
NC 98-Libya | 2004 - 2012 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	4
WL4-00-Malaysia
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	17
WL4-00-Malaysia | 2016 - 2018 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	17
WL4-00-Malaysia | 2013 - 2015 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	0
WL4-00-Malaysia | 2004 - 2012 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	0
Other Projects [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	63
Other Projects [Member] | 2016 - 2018 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	20
Other Projects [Member] | 2013 - 2015 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	26
Other Projects [Member] | 2004 - 2012 [Member]
Aging of exploratory well costs that have been capitalized for more than one year
Aging of Exploratory Well Cost that have been capitalized for more than one year	$ 17

Suspended Wells-Exploration Exp

Suspended Wells-Exploration Expense (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Feb. 28, 2017	Dec. 31, 2019	Dec. 31, 2018	[1]	Dec. 31, 2017	[1]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Exploration Expense		$ 743	$ 369		$ 934
Lower 48 Segment [Member] | Central Louisiana Austin Chalk [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Exploration Expense		111
Lower 48 Segment [Member] | Operating Segments [Member] | Central Louisiana Austin Chalk [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Exploration Expense		$ 141
Angola | Other International Segment [Member] | Athena Drilling Rig [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Exploration Expense	$ 43
[1]	See Notes to Consolidated Financial Statements.

Impairments (Details)

Impairments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges	$ 405	$ 27	$ 6,601
Alaska Segment [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges	0	20	180
Lower 48 Segment [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges	402	63	3,969
Canada Segment [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges	2	9	22
Europe and North Africa Segment [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges	1	(79)	46
Asia Pacific and Middle East Segment [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges	$ 0	$ 14	$ 2,384

Impairments Narratives (Details

Impairments Narratives (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018		Dec. 31, 2017
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges	$ 405	$ 27		$ 6,601
Exploration Expense	743	369	[1]	934	[1]
Alaska Segment [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges	0	20		180
Alaska Segment [Member] | Small interest Point Thomson Unit | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges				180
Alaska Segment [Member] | Cancelled Project [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges		20
Lower 48 Segment [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges	402	63		3,969
Lower 48 Segment [Member] | Niobrara [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges	402
Lower 48 Segment [Member] | Central Louisiana Austin Chalk [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Exploration Expense	111
Lower 48 Segment [Member] | Central Louisiana Austin Chalk [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Exploration Expense	141
Lower 48 Segment [Member] | Barnett [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges		63
Lower 48 Segment [Member] | Certain Developed Properties [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges				3,969
Lower 48 Segment [Member] | Shenandoah Leasehold [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Exploration Expense				51
Lower 48 Segment [Member] | Mineral Assets [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Exploration Expense				38
Canada Segment [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges	2	9		22
Canada Segment [Member] | Cancelled Project [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges				22
Europe and North Africa Segment [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges	1	(79)		46
Europe and North Africa Segment [Member] | Certain Projects In Europe And NorthAfrica [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges		(79)		46
Asia Pacific and Middle East Segment [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges	$ 0	$ 14		2,384
Asia Pacific and Middle East Segment [Member] | Australia Pacific LNG [Member] | Operating Segments [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges				$ 2,384
[1]	See Notes to Consolidated Financial Statements.

Asset Retirement Obligations _3

Asset Retirement Obligations and Accrued Environmental Costs (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Environmental Liabilities [Line Items]
Asset retirement obligations	$ 6,206	$ 7,908	$ 7,798
Accrued environmental costs	171	178
Total asset retirement obligations and accrued environmental costs	6,377	8,086
Asset retirement obligations and accrued environmental costs due within one year	1,025	398
Long-term asset retirement obligations and accrued environmental costs	5,352	$ 7,688
Other accruals
Environmental Liabilities [Line Items]
Asset retirement obligations and accrued environmental costs due within one year	$ (741)

Asset Retirement Obligations _4

Asset Retirement Obligations and Accrued Environmental Costs - Change in Asset Retirement Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Changes in overall asset retirement obligation changed
Balance at January 1	$ 7,908	$ 7,798
Accretion of discount	322	348
New obligations	155	657
Changes in estimates of existing obligations	50	(266)
Spending on existing obligations	(229)	(228)
Property dispositions	(1,920)	(161)
Foreign currency translation	(80)	(240)
Balance at December 31	$ 6,206	$ 7,908

Asset Retirement Obligations _5

Asset Retirement Obligations and Accrued Environmental Costs - Textuals (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Environmental Liabilities [Line Items]
Accrued environmental costs	$ 171	$ 178
Accrued Enviornmental Costs Discounted	$ 97
Maximum number of years accrued environmental liabilities will be paid over	30 years
Expected expenditures for acquired environmental obligations, weighted-average discount factor rate	5.00%
Accrued environmental costs, undiscounted due 2020	$ 10
Accrued environmental costs, undiscounted due 2021	7
Accrued environmental costs, undiscounted due 2022	10
Accrued environmental costs, undiscounted due 2023	3
Accrued environmental costs, undiscounted due 2024	2
Accrued environmental costs, undiscounted due after 2025	108
Cleanup Remediation Activities [Member]
Environmental Liabilities [Line Items]
Accrued environmental costs	112	100
Corporate and Other Environmental Liabilities [Member]
Environmental Liabilities [Line Items]
Accrued environmental costs	47	67
Federal Comprehensive Environmental Response Compensation and Liability Act or Similar State Laws [Member]
Environmental Liabilities [Line Items]
Accrued environmental costs	$ 12	$ 11

Debt (Details)

Debt (Details) - USD ($) $ in Millions	Dec. 31, 2019		Dec. 31, 2018
Long-term debt
Debt Instrument, Face Amount	$ 13,971		$ 13,971
Finance Lease Obligations	720		777
Net unamortized premiums and discounts	204		220
Total debt	14,895		14,968
Short-term debt	(105)		(112)
Long-term debt	14,790		14,856
Variable rate debt bonds [Member]
Long-term debt
Debt Instrument, Face Amount	283		283
9.125% Debentures [Member] | Due 2021 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	123		123
8.20% Debentures [Member] | Due 2025 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	134		134
8.125% Notes [Member] | Due 2030 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	390		390
7.9% Debentures [Member] | Due 2047 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	60		60
7.8% Debentures [Member] | Due 2027 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	203		203
7.65% Debentures [Member] | Due 2023 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	78		78
7.40% Notes [Member] | Due 2031 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	500		500
7.375% Debentures [Member] | Due 2029 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	92		92
7.25% Notes [Member] | Due 2031 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	500		500
7.20% Notes [Member] | Due 2031 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	575		575
7% Debentures [Member] | Due 2029 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	200		200
6.95% Notes [Member] | Due 2029 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	1,549		1,549
6.875% Debentures [Member] | Due 2026 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	67		67
6.50% Notes [Member] | Due 2039 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	2,750		2,750
5.951% Notes [Member] | Due 2037 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	645		645
5.95% Notes [Member] | Due 2036 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	500		500
5.95% Notes [Member] | Due 2046 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	500		500
5.90% Notes [Member] | Due 2032 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	505		505
5.90% Notes [Member] | Due 2038 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	600		600
4.95% Notes [Member] | Due 2026 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	1,250		1,250
4.3% Notes [Member] | Due 2044 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	750		750
4.15% Notes [Member] | Due 2034 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	246		246
3.35% Notes [Member] | Due 2024 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	426		426
3.35% Notes [Member] | Due 2025 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	199		199
2.4% Notes [Member] | Due 2022 [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	329		329
Floating rate note due 2018 [Member] | Due 2018 [Member] | Floating Rate Notes [Member]
Long-term debt
Debt Instrument, Face Amount	$ 500		$ 500
Floating Rate Notes Due 2022 [Member] | Floating Rate Notes [Member] | Minimum [Member]
Long-term debt
Debt Instrument, Interest Rate, Stated Percentage	2.81%		2.32%
Floating Rate Notes Due 2022 [Member] | Floating Rate Notes [Member] | Maximum [Member]
Long-term debt
Debt Instrument, Interest Rate, Stated Percentage	3.58%		3.52%
Industrial Development Bonds Due One [Member] | Variable rate debt bonds [Member]
Long-term debt
Debt Instrument, Face Amount	$ 18		$ 18
Industrial Development Bonds Due One [Member] | Variable rate debt bonds [Member] | Minimum [Member]
Long-term debt
Debt Instrument, Interest Rate, Stated Percentage	1.08%		0.95%
Industrial Development Bonds Due One [Member] | Variable rate debt bonds [Member] | Maximum [Member]
Long-term debt
Debt Instrument, Interest Rate, Stated Percentage	2.45%		1.86%
Marine Terminal Revenue Refunding Bonds [Member] | Variable rate debt bonds [Member] | Minimum [Member]
Long-term debt
Debt Instrument, Interest Rate, Stated Percentage	1.08%	[1]	0.88%
Marine Terminal Revenue Refunding Bonds [Member] | Variable rate debt bonds [Member] | Maximum [Member]
Long-term debt
Debt Instrument, Interest Rate, Stated Percentage	2.45%		1.95%
Marine Terminal Revenue Refunding Bonds [Member] | Due 2031 [Member] | Variable rate debt bonds [Member]
Long-term debt
Debt Instrument, Face Amount	$ 265		$ 265
Other Debt [Member] | Unsecured Debt (Debentures) [Member]
Long-term debt
Debt Instrument, Face Amount	$ 17		$ 17
[1]	<div>Plans for which ConocoPhillips is not the primary obligor—primarily those administered by equity affiliates.</div>

Debt Narratives (Details)

Debt Narratives (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt (Textual) [Abstract]
Maturities of long-term borrowings in 2020	$ 105,000,000
Maturities of long-term borrowings in 2021	235,000,000
Maturities of long-term borrowings in 2022	940,000,000
Maturities of long-term borrowings in 2023	198,000,000
Maturities of long-term borrowings in 2024	548,000,000
Short-term Debt [Line Items]
Letters of Credit Outstanding, Amount	277,000,000
Debt Instrument [Line Items]
Debt Instrument, Face Amount	13,971,000,000	$ 13,971,000,000
Repayment of Debt	80,000,000	4,995,000,000	$ 7,876,000,000
Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Total amount under revolving credit facilities	6,000,000,000
Commercial paper program	$ 6,000,000,000
Maturity period of commercial paper (in days)	P90D
Minimum limit of debt for cross default provision	$ 200,000,000
Letters of Credit Outstanding, Amount	0	0
Commercial paper outstanding	0	0
Line of Credit Facility, Remaining Borrowing Capacity	6,000,000,000
Letter Of Credit [Member]
Short-term Debt [Line Items]
Letters of credit capacity	500,000,000
Unsecured Debt (Debentures) [Member] | Due 2021 [Member] | 9.125% Debentures [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	123,000,000	123,000,000
Unsecured Debt (Debentures) [Member] | Due 2022 [Member] | 2.4% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	329,000,000	329,000,000
Unsecured Debt (Debentures) [Member] | Due 2023 [Member] | 7.65% Debentures [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	78,000,000	78,000,000
Unsecured Debt (Debentures) [Member] | Due 2024 [Member] | 3.35% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	426,000,000	426,000,000
Unsecured Debt (Debentures) [Member] | Due 2025 [Member] | 3.35% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	199,000,000	199,000,000
Unsecured Debt (Debentures) [Member] | Due 2025 [Member] | 8.20% Debentures [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	134,000,000	134,000,000
Unsecured Debt (Debentures) [Member] | Due 2027 [Member] | 7.8% Debentures [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	203,000,000	203,000,000
Unsecured Debt (Debentures) [Member] | Due 2030 [Member] | 8.125% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	390,000,000	390,000,000
Unsecured Debt (Debentures) [Member] | Due 2034 [Member] | 4.15% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	246,000,000	246,000,000
Unsecured Debt (Debentures) [Member] | Due 2047 [Member] | 7.9% Debentures [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	60,000,000	60,000,000
Floating Rate Notes [Member] | Due 2018 [Member] | Floating rate note due 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	500,000,000	500,000,000
Variable rate debt bonds [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 283,000,000	$ 283,000,000

Guarantees Textual (Details)

Guarantees Textual (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)
Australia Pacific LNG [Member]
Guarantor Obligations [Line Items]
Equity Interest Of Others	37.50%
Continued development [Member] | Australia Pacific LNG [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 60
Terms of Guarantees Outstanding	26 years or the life of the venture
Other Guarantees [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 820
Terms of Guarantees Outstanding	P3Y
Other Guarantees [Member] | U.K. Subsidiaries [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 100
Indemnification [Member]
Guarantor Obligations [Line Items]
Accrual for Environmental Loss Contingencies	30
Guarantor Obligations, Current Carrying Value	80
Guarantee existing sales agreement of natural gas delivery | Australia Pacific LNG [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 780
Terms of Guarantees Outstanding	P22Y
Max potential future payments-reckless breach [Member] | Australia Pacific LNG [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 1,400
Finance Reserve Guarantee [Member] | Australia Pacific LNG [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 170
Terms of Guarantees Outstanding	P11Y
Guarantor Obligations, Current Carrying Value	$ 14

Contingencies and Commitments (

Contingencies and Commitments (Details) - USD ($) $ in Millions	1 Months Ended						12 Months Ended
	Sep. 30, 2019	Aug. 31, 2019	Mar. 31, 2019	Apr. 30, 2018	Dec. 31, 2017	Feb. 28, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Aug. 29, 2019
Loss Contingencies [Line Items]
Letters of Credit Outstanding, Amount							$ 277
Long-Term Throughput Agreements and Take-or-Pay Agreements [Abstract]
Payments under Long-Term Throughput Agreements And Take-or-Pay Agreements, Due within one year							7
Payments under Long-Term Throughput Agreements And Take-or-Pay Agreements, Due in Second Year							7
Payments under Long-Term Throughput Agreements And Take-or-Pay Agreements, Due in Third Year							7
Payments under Long-Term Throughput Agreements And Take-or-Pay Agreements, Due in Fourth Year							7
Payments under Long-Term Throughput Agreements And Take-or-Pay Agreements, Due in Fifth Year							7
Payments under Long-Term Throughput Agreements And Take-or-Pay Agreements, Due after Fifth Year							57
Total payments under Long-Term Throughput Agreements and Take-or-Pay Agreements					$ 43		25	$ 39	$ 43
Ecuador | Cleanup Remediation Activities [Member] | Penrenco Ecuador Limited [Member]
Loss Contingencies [Line Items]
Settlement Amount Awarded To Other Party Through Third Party	$ 54
Burlington Resources Inc Vs The Republic Of Ecuador [Member]
Loss Contingencies [Line Items]
Cash Proceeds from Legal Settlements								262	$ 75
Burlington Resources Inc Vs The Republic Of Ecuador [Member] | Burlington Resources Inc [Member] | Ecuador
Loss Contingencies [Line Items]
Litigation Settlement, Amount Awarded from Other Party						$ 380
Litigation Settlement, Amount Awarded to Other Party						$ 42
Cash Proceeds from Legal Settlements				$ 262	75
Settlement Agreement Payment Installment Total					$ 337
ConocoPhillips Vs Petroleos de Venezuela SA [Member]
Loss Contingencies [Line Items]
Cash Proceeds from Legal Settlements							$ 330	$ 430
ConocoPhillips Vs Petroleos de Venezuela SA [Member] | Venezuela
Loss Contingencies [Line Items]
Litigation Settlement, Amount Awarded from Other Party			$ 8,700
Litigation Settlement Amount Awarded From Other Party Revised										$ 8,500
Litigation Award Reduction										$ 227
Loss Contingency Settlement Agreement Terms							under their agreements in connection with the expropriation of the projects and other pre-expropriation fiscal measures. In August 2018, ConocoPhillips entered into a settlement with PDVSA to recover the full amount of this ICC award, plus interest through the payment period, including initial payments totaling approximately $500 million within a period of 90 days from the time of signing of the settlement agreement. The balance of the settlement is to be paid quarterly over a period of four and a half years.
ConocoPhillips Versus Petroleos De Venezuela 2 [Member] | Venezuela
Loss Contingencies [Line Items]
Litigation Settlement, Amount Awarded from Other Party				$ 2,000
Cash Proceeds from Legal Settlements							$ 754
Conoco Phillips Versus Petroleos DeVenezuela 3 [Member] | Venezuela
Loss Contingencies [Line Items]
Litigation Settlement, Amount Awarded from Other Party		$ 55

Derivative and Financial Inst_3

Derivative and Financial Instruments - Commodity Balance Sheet (Details) - Commodity Contract [Member] - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Commodity derivative assets	$ 288	$ 410
Other assets [Member]
Derivatives, Fair Value [Line Items]
Commodity derivative assets	34	40
Other accruals [Member]
Derivatives, Fair Value [Line Items]
Commodity derivative liabilities	283	370
Other liabilities and deferred credits [Member]
Derivatives, Fair Value [Line Items]
Commodity derivative liabilities	$ 28	$ 30

Derivative and Financial Inst_4

Derivative and Financial Instruments - Commodity GainLoss (Details) - Commodity Contract [Member] - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Sales and other operating revenues [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from commodity derivatives	$ 141,000,000	$ 45,000,000	$ 77,000,000
Other Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from commodity derivatives	4,000,000	7,000,000	0
Purchased commodities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from commodity derivatives	$ (118,000,000)	$ (41,000,000)	$ (61,000,000)

Derivative and Financial Inst_5

Derivative and Financial Instruments - Commodity Notional (Details) - Commodity Contract [Member] - Short [Member] - Bcfe Bcfe in Billions	Dec. 31, 2019	Dec. 31, 2018
Natural gas and power, Fixed price [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Commodity derivatives - volumetric material net exposures	(5)	(17)
Natural gas and power, Basis [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Commodity derivatives - volumetric material net exposures	(23)	(1)

Derivative and Financial Inst_6

Derivative and Financial Instruments - FX Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Foreign currency exchange derivative assets	$ 1	$ 7
Other accruals [Member]
Derivatives, Fair Value [Line Items]
Foreign currency exchange derivative liabilities	20	6
Other liabilities and deferred credits [Member]
Derivatives, Fair Value [Line Items]
Foreign currency exchange derivative liabilities	$ 8	$ 0

Derivative and Financial Inst_7

Derivative and Financial Instruments - FX Derivative (Details)	12 Months Ended
	Dec. 31, 2019
Derivative and Financial Instruments [Abstract]
Description of Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Activities	In December 2017, we entered into foreign exchange zero cost collars buying the right to sell $1.25 billion CAD at $0.707 CAD and selling the right to buy $1.25 billion CAD at $0.842 CAD against the U.S. dollar. The collar expired during the second quarter of 2019 and we entered into new foreign currency exchange forward contracts to sell $1.35 billion CAD at $0.748 CAD against the U.S. dollar.

Derivative and Financial Inst_8

Derivative and Financial Instruments - FX GainLoss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Foreign currency transaction (gains) losses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Foreign currency transaction (gains) losses	$ (16)	$ (1)	$ (13)

Derivative and Financial Inst_9

Derivative and Financial Instruments - FX Notional (Details)		12 Months Ended
		Dec. 31, 2019USD ($)	Dec. 31, 2019CAD ($)	Dec. 31, 2019GBP (£)	Dec. 31, 2018USD ($)	Dec. 31, 2018CAD ($)	Dec. 31, 2018GBP (£)
Trading Activity, Gains and Losses, Net [Line Items]
Description of Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Activities		In December 2017, we entered into foreign exchange zero cost collars buying the right to sell $1.25 billion CAD at $0.707 CAD and selling the right to buy $1.25 billion CAD at $0.842 CAD against the U.S. dollar. The collar expired during the second quarter of 2019 and we entered into new foreign currency exchange forward contracts to sell $1.35 billion CAD at $0.748 CAD against the U.S. dollar.
Sell U.S. dollar, buy British pound. | Not Designated as Hedging Instrument [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Net notional position of foreign currency exchange derivatives | $		$ 0			$ 805,000,000
Buy British Pound Sell Euro [Member] | Not Designated as Hedging Instrument [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Net notional position of foreign currency exchange derivatives | £				£ 4,000,000			£ 0
Sell British pound, buy other currencies [Member] | Not Designated as Hedging Instrument [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Net notional position of foreign currency exchange derivatives | £	[1]			£ 0			£ 21,000,000
Sell Canadian dollar, buy U.S. dollar [Member] | Not Designated as Hedging Instrument [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Net notional position of foreign currency exchange derivatives | $			$ 1,337,000,000			$ 1,242,000,000
[1]	<div>*Primarily euro and Norwegian krone.</div>

Derivative and Financial Ins_10

Derivative and Financial Instruments - Financial Instruments Cost (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Schedule of Held-to-maturity Securities [Line Items]
Cash and Cash Equivalents, carried at cost plus accrued interest	$ 5,079	$ 5,915
Short-term investments carried at cost plust accrued interest	2,929	248
Cash [Member]
Schedule of Held-to-maturity Securities [Line Items]
Cash and Cash Equivalents, carried at cost plus accrued interest	759	876
Demand Deposits [Member]
Schedule of Held-to-maturity Securities [Line Items]
Cash and Cash Equivalents, carried at cost plus accrued interest	1,483	0
Short-term investments carried at cost plust accrued interest	0	0
Bank Time Deposits [Member] | Remaining Maturities 1 To 90 Days [Member]
Schedule of Held-to-maturity Securities [Line Items]
Cash and Cash Equivalents, carried at cost plus accrued interest	2,030	3,509
Short-term investments carried at cost plust accrued interest	1,395	0
Bank Time Deposits [Member] | Remaining maturities from 91 to 180 days [Member]
Schedule of Held-to-maturity Securities [Line Items]
Cash and Cash Equivalents, carried at cost plus accrued interest	0	0
Short-term investments carried at cost plust accrued interest	465	0
Commercial Paper [Member] | Remaining Maturities 1 To 90 Days [Member]
Schedule of Held-to-maturity Securities [Line Items]
Cash and Cash Equivalents, carried at cost plus accrued interest	413	229
Short-term investments carried at cost plust accrued interest	1,069	248
US Government Debt Securities [Member] | Remaining Maturities 1 To 90 Days [Member]
Schedule of Held-to-maturity Securities [Line Items]
Cash and Cash Equivalents, carried at cost plus accrued interest	394	1,301
Short-term investments carried at cost plust accrued interest	$ 0	$ 0

Derivative and Financial Ins_11

Derivative and Financial Instruments - Financial Instruments Fair Value (Details) $ in Millions	Dec. 31, 2019USD ($)
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents, carried at fair value	$ 9
Short Term Investments At Fair Value	99
Investments and Long Term Receivable Carried At Fair Value	133
Corporate Debt [Member] | Remaining maturities within one year [Member]
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents, carried at fair value	1
Short Term Investments At Fair Value	59
Investments and Long Term Receivable Carried At Fair Value	0
Corporate Debt [Member] | Remaining Maturities Greater Than One Year [Member]
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents, carried at fair value	0
Short Term Investments At Fair Value	0
Investments and Long Term Receivable Carried At Fair Value	99
Commercial Paper [Member] | Remaining maturities within one year [Member]
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents, carried at fair value	8
Short Term Investments At Fair Value	30
Investments and Long Term Receivable Carried At Fair Value	0
US Government Debt Securities [Member] | Remaining maturities within one year [Member]
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents, carried at fair value	0
Short Term Investments At Fair Value	10
Investments and Long Term Receivable Carried At Fair Value	0
US Government Debt Securities [Member] | Remaining Maturities Greater Than One Year [Member]
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents, carried at fair value	0
Short Term Investments At Fair Value	0
Investments and Long Term Receivable Carried At Fair Value	15
Asset-backed Securities [Member] | Remaining Maturities Greater Than One Year [Member]
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents, carried at fair value	0
Short Term Investments At Fair Value	0
Investments and Long Term Receivable Carried At Fair Value	$ 19

Derivative and Financial Ins_12

Derivative and Financial Instruments - Cost Basis to Fair Value (Details) $ in Millions	Dec. 31, 2019USD ($)
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	$ 241
Investments, Fair Value Disclosure	241
Corporate Debt [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	159
Investments, Fair Value Disclosure	159
US Government Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	25
Investments, Fair Value Disclosure	25
Commercial Paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	38
Investments, Fair Value Disclosure	38
Asset-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	19
Investments, Fair Value Disclosure	$ 19

Derivative and Financial Ins_13

Derivative and Financial Instruments - Credit Risk (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Schedule of Credit Risk [Line Items]
Collateral was posted for derivative instruments in a liability position	$ 0	$ 0
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.
In event of lowered credit rating [Member]
Schedule of Credit Risk [Line Items]
Derivative, Net Liability Position, Aggregate Fair Value	$ 79	$ 62
In event of downgrade below investment grade [Member]
Schedule of Credit Risk [Line Items]
Additional Collateral, Aggregate Fair Value	$ 76
Trade receivables [Member] | Maximum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Credit Derivative, Term	30 days

Fair Value Measurement - FV Hie

Fair Value Measurement - FV Hierarchy (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Commodity derivative asset, gross	$ 322,000,000	$ 450,000,000
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in Cenovus Energy		1,462,000,000
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in Cenovus Energy	2,111,000,000	1,462,000,000
Available for sale debt securities at fair value	241,000,000
Commodity derivative asset, gross	322,000,000	450,000,000
Total assets	2,674,000,000	1,912,000,000
Commodity derivative liability, gross	311,000,000	400,000,000
Total liabilities	311,000,000	400,000,000
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in Cenovus Energy	2,111,000,000	1,462,000,000
Available for sale debt securities at fair value	25,000,000
Commodity derivative asset, gross	172,000,000	236,000,000
Total assets	2,308,000,000	1,698,000,000
Commodity derivative liability, gross	174,000,000	225,000,000
Total liabilities	174,000,000	225,000,000
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in Cenovus Energy	0	0
Available for sale debt securities at fair value	216,000,000
Commodity derivative asset, gross	114,000,000	181,000,000
Total assets	330,000,000	181,000,000
Commodity derivative liability, gross	115,000,000	145,000,000
Total liabilities	115,000,000	145,000,000
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in Cenovus Energy	0	0
Available for sale debt securities at fair value	0
Commodity derivative asset, gross	36,000,000	33,000,000
Total assets	36,000,000	33,000,000
Commodity derivative liability, gross	22,000,000	30,000,000
Total liabilities	$ 22,000,000	$ 30,000,000

Fair Value Measurement - FV of

Fair Value Measurement - FV of Commodity Derivatives (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Offsetting Derivative Assets [Abstract]
Assets - gross amounts recognized	$ 322	$ 450
Assets - amounts without right of setoff	3	9
Assets - gross amounts	319	441
Assets - gross amounts offset	193	280
Assets - net amounts presented	126	161
Assets - cash collateral	4	0
Assets - net amounts	122	161
Offsetting Derivative Liabilities [Abstract]
Liabilities - gross amounts recognized	311	400
Liabilities - amounts without right of setoff	4	4
Liabilities - gross amounts recognized	307	396
Liabilities - gross amounts offset	193	280
Liabilities - net amounts presented	114	116
Liabilities - cash collateral	12	10
Commodity derivatives, liability	$ 102	$ 106

Fair Value Measurement - Nonrec

Fair Value Measurement - Nonrecurring (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Millions	1 Months Ended		3 Months Ended
	Nov. 30, 2019	May 31, 2019	Dec. 31, 2019	Mar. 31, 2019	Sep. 30, 2018	Mar. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value- Net PP&E (held for sale)	$ 194		$ 166
Before-Tax Loss - Net PP&E (held for sale)	351		28
Fair Value - Cost and Equity Method Investments		$ 30		$ 171	$ 201	$ 250
Before-Tax Loss - Cost and Equity method investments		95		60	43	44
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value- Net PP&E (held for sale)	194		166
Fair Value - Cost and Equity Method Investments		0		171	201	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value- Net PP&E (held for sale)	0		0
Fair Value - Cost and Equity Method Investments		30		0	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value- Net PP&E (held for sale)	$ 0		$ 0
Fair Value - Cost and Equity Method Investments		$ 0		$ 0	$ 0	$ 250

Fair Value Measurement - Fair V

Fair Value Measurement - Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 18, 2018
Financial Assets
Investment in Cenovus Energy	$ 2,111	$ 1,462
Derivative Asset, Fair Value, Amount Offset Against Collateral	126	161
Carrying Amount [Member]
Financial Assets
Investment in Cenovus Energy	2,111	1,462
Available for sale debt securities at fair value	241		$ 0
Total loans and advances - related parties	339	468
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Total debt, excluding capital leases	14,175	14,191
Carrying Amount [Member] | Commodity Contract [Member]
Financial Assets
Derivative Asset, Fair Value, Amount Offset Against Collateral	125	170
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Commodity derivatives	106	$ 110
Fair Value [Member]
Financial Assets
Investment in Cenovus Energy	2,111		1,462
Available for sale debt securities at fair value	241		0
Total loans and advances - related parties	339		468
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Total debt, excluding capital leases	18,108		16,147
Fair Value [Member] | Commodity Contract [Member]
Financial Assets
Derivative Asset, Fair Value, Amount Offset Against Collateral	125		170
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Commodity derivatives	$ 106		$ 110

Fair Value Measurement - Textua

Fair Value Measurement - Textuals (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Derivative and Financial Instruments [Abstract]
Obligations to return cash collateral	$ 4,000,000	$ 0
Rights to reclaim cash collateral	$ 12,000,000	$ 10,000,000

Equity - changes in shares of c

Equity - changes in shares of common stock (Details) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Changes in shares of common stock
Beginning Balance, Common Stock	1,791,637,434	1,785,419,175	1,782,079,107
Treasury Stock, Shares, Beginning Balance	653,288,213	608,312,034	544,809,771
Repurchase of common stock	57,495,601	44,976,179	63,502,263
Distributed under benefit plans	4,014,769	6,218,259	3,340,068
Ending Balance, Common Stock	1,795,652,203	1,791,637,434	1,785,419,175
Treasury Stock, Shares, Ending Balance	710,783,814	653,288,213	608,312,034

Equity - Textuals (Details)

Equity - Textuals (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended			37 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Feb. 01, 2020
Equity [Abstract]
Preferred Stock, Authorized	500,000,000			500,000,000
Preferred Stock, Par or Stated Value Per Share	$ 0.01			$ 0.01
Preferred Stock, Shares Issued	0			0
Preferred Stock, Shares Outstanding	0			0
Stockholders' Equity Attributable to Noncontrolling Interest	$ 69	$ 125		$ 69
Treasury Stock, Shares, Acquired				168,553,141
Treasury Stock Value Acquired Cost Method	3,500	$ 2,999	$ 3,000	$ 9,625
Stock Repurchase Program Authorized	$ 15,000			$ 15,000
Cumulative amount of stock repurchase plan authorized					$ 25,000

Non Mineral Leases - Intro (Det

Non Mineral Leases - Intro (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Finance Lease Obligations	$ 720	$ 777
Operating Lease, Liability	$ 932
Co Venturer Member
FInance lease net assets consolidated on a proportionate basis		420
Finance Lease Obligations		688
Operating Lease, Right-of-Use Asset		$ 57
Lease, Practical Expedients, Package [true false]	true
Lease Practical Expedient Lessor Single Lease Component	true

Non-Mineral Leases - Balance Sh

Non-Mineral Leases - Balance Sheet (Details) - USD ($)	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Property Plant And Equipment Gross	$ 97,746,000,000		$ 110,597,000,000
Accumulated depreciation, depletion and amortization	55,477,000,000		64,899,000,000
Property, Plant and Equipment, Net	42,269,000,000		45,698,000,000
Short-term debt	105,000,000		112,000,000
Long-term debt	14,790,000,000		14,856,000,000
Finance Lease, Liability Total	720,000,000
Prepaid expenses and other current assets	2,259,000,000		575,000,000
Other assets (leases)	2,426,000,000		1,344,000,000
Other Liabilities, Current	2,045,000,000		1,259,000,000
Operating Lease, Liability	932,000,000
Previously Reported [Member]
Property Plant And Equipment Gross			1,044,000,000
Accumulated depreciation, depletion and amortization			550,000,000
Property, Plant and Equipment, Net			494,000,000
Short-term debt			79,000,000
Long-term debt			698,000,000
Finance Lease, Liability Total			$ 777,000,000
Accounting Standards Update 2016-02 [Member]
Property Plant And Equipment Gross	1,039,000,000
Accumulated depreciation, depletion and amortization	649,000,000
Property, Plant and Equipment, Net	390,000,000
Prepaid expenses and other current assets	40,000,000
Other assets (leases)	$ 896,000,000
Accounting Standards Update 2016-02 [Member] | Restatement Adjustment [Member]
Operating Lease, Right-of-Use Asset		$ 998,000,000
Operating Lease, Liability, Current		$ 998,000,000

Non-Mineral Leases - Balance _2

Non-Mineral Leases - Balance Sheet Liabilities (Details) $ in Millions	Dec. 31, 2019USD ($)
Finance Lease, Liability Total	$ 720
Operating Lease, Liability	932
Short Term Debt [Member]
Finance Lease, Liability Total	87
Other Liabilities and deferred credits [Member]
Operating Lease, Liability	585
Other Accruals [Member]
Operating Lease, Liability	347
Long Term Debt Location [Member]
Finance Lease, Liability Total	$ 633

Non-Mineral Leases - Other Info

Non-Mineral Leases - Other Info (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)
Leases [Abstract]
Operating lease cost	$ 341
Amortization of right-of-use assets	99
Interest on lease liabilities	37
Short-term Lease Cost	77
Lease Cost Total	$ 554
Weighted-average term (years) - Operating Leases	5 years 2 months 8 days
Weighted-average term (years) - Finance Leases	8 years 8 months 12 days
Weighted Average Discount Rate (Percent) - Operating Leases	3.10%
Weighted Average Discount Rate (Percent) - Finance Leases	5.53%
Cash Flow, Operating Activities, Lessee [Abstract]
Operating cash flows from operating leases	$ 203
Operating cash flows from finance leases	27
Financing cash flows from finance leases	81
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	499
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 26

Non-Mineral Leases - Maturities

Non-Mineral Leases - Maturities (Details) $ in Millions	Dec. 31, 2019USD ($)
Operating Lease Liabilities, Payments Due [Abstract]
2020	$ 348
2021	247
2022	130
2023	82
2024	63
Remaining Years	149
Lessee, Operating Lease, Liability, Payments, Due, Total	1,019
Finance Lease Liabilities, Payments, Due [Abstract]
2020	120
2021	104
2022	102
2023	88
2024	84
Remaining Years	382
Finance Lease Liability, Payments, Due, Total	$ 880

Non-Mineral Leases - Maturiti_2

Non-Mineral Leases - Maturities under 840 (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Future Operating Lease Payments Under 840 [Abstract]
2019	$ 248
2020	425
2021	136
2022	319
2023	54
Remaining Years	212
Operating Leases, Future Minimum Payments Due, Total	1,394
Less income from subleases	(7)
Net Minimum Operating Lease Payments	1,387
Capital lease obligations Under 840 [Abstract]
2019	118
2020	116
2021	100
2022	98
2023	87
Remaining years	453
Capital Leases, Future Minimum Payments Due, Total	972
Less portion representing imputed interest	(195)
Finance Lease Obligations, Total	$ 720	$ 777

Non-Mineral Leases - Total Leas

Non-Mineral Leases - Total Lease Liabilities (Details) $ in Millions	Dec. 31, 2019USD ($)
Operating Lease Liabilities Gross Difference Amount [Abstract]
Operating Lease, Liability	$ 932
Interest on operating lease liabilities	(87)
Lessee, Operating Lease, Liability, Payments, Due, Total	1,019
Finance Lease Liabilities, Gross Difference, Amount [Abstract]
Finance Lease, Liability Total	720
Interest on Finance lease liabilities	(160)
Finance Lease Liability, Payments, Due, Total	$ 880

Non-Mineral Leases - Operating

Non-Mineral Leases - Operating Lease Rentals (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Operating lease rental expense
Operating Leases, Rent Expense, Minimum Rentals	$ 253	$ 264
Less sublease rentals	(16)	(20)
Operating Leases, Rent Expense, Total	$ 237	$ 244

Non-Mineral Leases - End Notes

Non-Mineral Leases - End Notes (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment, Net	$ 42,269,000,000	$ 45,698,000,000
Co Venturer Member
Short-term Lease Commitment, Amount	31,000,000
Short Term Lease Commitment Lease Not Commenced	18,000,000
Property plant equipment | Co Venturer Member
Property, Plant and Equipment, Net	335,000,000
Finance Lease, Liability, Current	$ 56,000,000
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Debt, Current
Finance Lease, Liability, Noncurrent	$ 579,000,000
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-term Debt and Capital Lease Obligations

Employee Benefit Plans - Change

Employee Benefit Plans - Change in Benefit Obligations and Fair Value of Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Pension Plans Defined Benefit [Member] | U.S.
Change in Benefit Obligation
Benefit obligation at January 1	$ 2,136	$ 3,236
Service cost	79	83	$ 89
Interest cost	79	99	118
Plan participant contributions	0	0
Plan amendments	0	0
Actuarial (gain) loss	278	(44)
Benefits paid	(253)	(507)
Curtailment	0	(4)
Settlement	0	(730)
Recognition of termination benefits	0	3
Foreign currency exchange rate change	0	0
Benefit obligation at December 31	2,319	2,136	3,236
Change in Fair Value of Plan Assets
Defined Benefit Plan, Fair Value of Plan Assets, Beginning Balance	1,336	2,541
Actual return on plan assets	273	(112)
Company contributions	235	144
Plan participant contributions	0	0
Defined Benefit Plan Plan Assets Benefits Paid	(253)	(507)
Settlement	0	(730)
Foreign currency exchange rate change	0	0
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance	1,591	1,336	2,541
Funded Status	(728)	(800)
Pension Plans Defined Benefit [Member] | Foreign Pension Plans, Defined Benefit [Member]
Change in Benefit Obligation
Benefit obligation at January 1	3,438	3,845
Service cost	69	81	77
Interest cost	97	107	103
Plan participant contributions	2	2
Plan amendments	0	7
Actuarial (gain) loss	387	(259)
Benefits paid	(147)	(143)
Curtailment	(69)	(3)
Settlement	0	0
Recognition of termination benefits	1	0
Foreign currency exchange rate change	102	(199)
Benefit obligation at December 31	3,880	3,438	3,845
Change in Fair Value of Plan Assets
Defined Benefit Plan, Fair Value of Plan Assets, Beginning Balance	3,358	3,647
Actual return on plan assets	529	(106)
Company contributions	464	156
Plan participant contributions	2	2
Defined Benefit Plan Plan Assets Benefits Paid	(147)	(143)
Settlement	0	0
Foreign currency exchange rate change	100	(198)
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance	4,306	3,358	3,647
Funded Status	426	(80)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Change in Benefit Obligation
Benefit obligation at January 1	218	265
Service cost	1	1	2
Interest cost	8	8	9
Plan participant contributions	20	22
Plan amendments	0	0
Actuarial (gain) loss	27	(10)
Benefits paid	(59)	(67)
Curtailment	0	0
Settlement	0	0
Recognition of termination benefits	0	0
Foreign currency exchange rate change	1	(1)
Benefit obligation at December 31	216	218	265
Change in Fair Value of Plan Assets
Defined Benefit Plan, Fair Value of Plan Assets, Beginning Balance	0	0
Actual return on plan assets	0	0
Company contributions	39	45
Plan participant contributions	20	22
Defined Benefit Plan Plan Assets Benefits Paid	(59)	(67)
Settlement	0	0
Foreign currency exchange rate change	0	0
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance	0	0	$ 0
Funded Status	$ (216)	$ (218)

Employee Benefit Plans - Chan_2

Employee Benefit Plans - Change in Benefit Obligations (Details) (Parenthetical) - Pension Plans Defined Benefit [Member] - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
U.S.
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 2,161	$ 1,969
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 3,594	$ 3,066

Employee Benefit Plans - Amount

Employee Benefit Plans - Amounts recognized in Balance Sheet And Assumptions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Amounts Recognized in the Consolidated Balance Sheet
Noncurrent liabilities	$ (1,781)	$ (1,764)
Pension Plans Defined Benefit [Member] | U.S.
Amounts Recognized in the Consolidated Balance Sheet
Noncurrent assets	0	0
Current liabilities	(21)	(59)
Noncurrent liabilities	(707)	(741)
Total recognized	$ (728)	$ (800)
Weighted-Average Assumptions Used to Determine Benefit Obligations at December 31
Discount rate	3.25%	4.25%
Rate of compensation increase	4.00%	4.00%
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended December 31
Discount rate	3.95%	3.80%
Expected return on plan assets	5.80%	5.80%
Rate of compensation increase	4.00%	4.00%
Before-tax amounts unrecognized in net periodic postretirement benefit cost
Unrecognized net actuarial loss (gain)	$ 479	$ 516
Unrecognized prior service cost (credit)	0	0
Pension Plans Defined Benefit [Member] | Foreign Pension Plans, Defined Benefit [Member]
Amounts Recognized in the Consolidated Balance Sheet
Noncurrent assets	765	232
Current liabilities	(6)	(4)
Noncurrent liabilities	(333)	(308)
Total recognized	$ 426	$ (80)
Weighted-Average Assumptions Used to Determine Benefit Obligations at December 31
Discount rate	2.35%	3.05%
Rate of compensation increase	3.35%	3.65%
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended December 31
Discount rate	2.90%	2.90%
Expected return on plan assets	4.10%	4.30%
Rate of compensation increase	3.65%	3.75%
Before-tax amounts unrecognized in net periodic postretirement benefit cost
Unrecognized net actuarial loss (gain)	$ 227	$ 310
Unrecognized prior service cost (credit)	(2)	(4)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Amounts Recognized in the Consolidated Balance Sheet
Noncurrent assets	0	0
Current liabilities	(42)	(44)
Noncurrent liabilities	(174)	(174)
Total recognized	$ (216)	$ (218)
Weighted-Average Assumptions Used to Determine Benefit Obligations at December 31
Discount rate	3.10%	4.05%
Rate of compensation increase		0.00%
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended December 31
Discount rate	4.05%	3.30%
Expected return on plan assets		0.00%
Rate of compensation increase		0.00%
Before-tax amounts unrecognized in net periodic postretirement benefit cost
Unrecognized net actuarial loss (gain)	$ 8	$ (21)
Unrecognized prior service cost (credit)	$ (183)	$ (216)

Employee Benefit Plans - Source

Employee Benefit Plans - Sources of Change in Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Sources of change in other comprehensive income (loss)
Net actuarial gain (loss) arising during the period	$ (55)	$ (150)	$ 19
Amortization of (gain) loss included in income	146	279	247
Net actuarial gain, Before-tax	91	129	266
Prior service (cost) credit arising during the period	0	(7)	2
Amortization of prior service cost (credit) included in net loss	(35)	(40)	(38)
Net change during the period	(35)	(47)	$ (36)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Sources of change in other comprehensive income (loss)
Net actuarial gain (loss) arising during the period	(27)	10
Amortization of (gain) loss included in income	(2)	(1)
Net actuarial gain, Before-tax	(29)	9
Prior service (cost) credit arising during the period	0	0
Amortization of prior service cost (credit) included in net loss	(33)	(35)
Net change during the period	(33)	(35)
Defined Benefit Plan Amounts That Will Be Amortized From Accumulated Other Comprehensive Income Loss In Next Fiscal Year [Abstract]
Unrecognized net actuarial loss (gain)	1
Unrecognized prior service cost (credit)	(31)
Pension Plans Defined Benefit [Member] | U.S.
Sources of change in other comprehensive income (loss)
Net actuarial gain (loss) arising during the period	(79)	(177)
Amortization of (gain) loss included in income	116	249
Net actuarial gain, Before-tax	37	72
Prior service (cost) credit arising during the period	0	0
Amortization of prior service cost (credit) included in net loss	0	0
Net change during the period	0	0
Defined Benefit Plan Amounts That Will Be Amortized From Accumulated Other Comprehensive Income Loss In Next Fiscal Year [Abstract]
Unrecognized net actuarial loss (gain)	50
Unrecognized prior service cost (credit)	0
Pension Plans Defined Benefit [Member] | Foreign Plan [Member]
Sources of change in other comprehensive income (loss)
Net actuarial gain (loss) arising during the period	51	17
Amortization of (gain) loss included in income	32	31
Net actuarial gain, Before-tax	83	48
Prior service (cost) credit arising during the period	0	(7)
Amortization of prior service cost (credit) included in net loss	(2)	(5)
Net change during the period	(2)	$ (12)
Defined Benefit Plan Amounts That Will Be Amortized From Accumulated Other Comprehensive Income Loss In Next Fiscal Year [Abstract]
Unrecognized net actuarial loss (gain)	23
Unrecognized prior service cost (credit)	$ (2)

Employee Benefit Plans - Projec

Employee Benefit Plans - Projected Benefit Obligation (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 2,073	$ 1,871
Accumulated benefit obligation	1,919	1,737
Fair values of pension plan assets	1,635	1,373
Nonqualified Plan [Member] | Unfunded Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	601	586
Accumulated benefit obligation	$ 542	$ 504

Employee Benefit Plans - Compon

Employee Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Pension Plans Defined Benefit [Member] | U.S.
Net periodic benefit cost of all defined benefit plans
Service cost	$ 79	$ 83	$ 89
Interest cost	79	99	118
Expected return on plan assets	(74)	(114)	(132)
Amortization of prior service cost (credit)	0	0	4
Recognized net actuarial loss (gain)	54	53	69
Pension settlement losses	62	196	131
Net periodic benefit cost	200	317	279
Pension Plans Defined Benefit [Member] | Foreign Plan [Member]
Net periodic benefit cost of all defined benefit plans
Service cost	69	81	77
Interest cost	97	107	103
Expected return on plan assets	(138)	(155)	(158)
Amortization of prior service cost (credit)	(2)	(5)	(6)
Recognized net actuarial loss (gain)	32	31	50
Pension settlement losses	0	0	0
Net periodic benefit cost	58	59	66
Other Postretirement Benefit Plans, Defined Benefit [Member]
Net periodic benefit cost of all defined benefit plans
Service cost	1	1	2
Interest cost	8	8	9
Expected return on plan assets	0	0	0
Amortization of prior service cost (credit)	(33)	(35)	(36)
Recognized net actuarial loss (gain)	(2)	(1)	(3)
Pension settlement losses	0	0	0
Net periodic benefit cost	$ (26)	$ (27)	$ (28)

Employee Benefit Plans - Benefi

Employee Benefit Plans - Benefit Cost Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Percent Amortized Of Unamortized Balance For Net Actuarial Gain And Losses		10.00%
Other Comprehensive Income (Loss), Defined Benefit Plans		$ (51)	$ (39)	$ (147)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension settlement losses		$ 0	$ 0	0
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate		3.10%	4.05%
U.S. | Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension settlement losses		$ (62)	$ (196)	(131)
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate		3.25%	4.25%
U.S. | Other Postretirement Benefit Plans, Defined Benefit [Member] | Pre Sixty Five Retiree[Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year		7.00%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate		5.00%
U.S. | Other Postretirement Benefit Plans, Defined Benefit [Member] | Post Sixty Five Retiree [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year		4.00%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate		5.00%
U.S. | Qualified Plan [Member] | Prudential Benefit Obligation [Member]
Defined Benefit Plan Disclosure [Line Items]
Change In Defined Benefit Assets			$ 730
U.S. | Qualified Plan [Member] | Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension settlement losses		$ (62)	(196)	(131)
U.S. | Qualified Plan [Member] | Pension Plans Defined Benefit [Member] | Prudential Benefit Obligation [Member]
Defined Benefit Plan Disclosure [Line Items]
Change In Defined Benefit Obligation			730
Change In Defined Benefit Assets			730
U.S. | Qualified Plan [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member] | Pre Sixty Five Retiree[Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate		2028
U.S. | Qualified Plan [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member] | Post Sixty Five Retiree [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate		2028
Foreign Plan [Member] | Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension settlement losses		$ 0	$ 0	$ 0
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate		2.35%	3.05%
Foreign Plan [Member] | Qualified Plan [Member] | Pension Plans Defined Benefit [Member] | Certain United Kingdom Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Change In Defined Benefit Assets	$ 43
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	1.80%		2.90%

Employee Benefit Plans - Plan A

Employee Benefit Plans - Plan Asset Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Pension Plans Defined Benefit [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 2,161	$ 1,969
Defined Benefit Plan, Actual Return on Plan Assets	273	(112)
Insurance Contract Rights And Obligations Fair Value Option [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value Of Participating Interest In Annuity Contract	95	84
Insurance Contract Rights And Obligations Fair Value Option [Member] | Fair Value, Inputs, Level 3 [Member] | Pension Plans Defined Benefit [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Fair Value Of Participating Interest In Annuity Contract	95	84
Accumulated benefit obligation	140	144
Defined Benefit Plan, Actual Return on Plan Assets	(4)
Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease)	$ 7
Defined Benefit Plan, Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocations for plan assets	37.00%
Defined Benefit Plan, Debt Security [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocations for plan assets	56.00%
Defined Benefit Plan, Debt Security [Member] | Insurance Contract Rights And Obligations Fair Value Option [Member] | Fair Value, Inputs, Level 3 [Member] | Pension Plans Defined Benefit [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Fair Value Of Participating Interest In Annuity Contract	$ 235	$ 228
Defined Benefit Plan, Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocations for plan assets	6.00%
Other Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocations for plan assets	1.00%

Employee Benefit Plans - Fair v

Employee Benefit Plans - Fair values of pension plan assets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Disclosure Item Amounts [Domain] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	$ 1,496	$ 1,249
Fair Value, Disclosure Item Amounts [Domain] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	4,297	3,345
U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	294	252
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	3,258	2,442
US Equity Securities [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	101	94
US Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	435	371
International Equity Securities [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	98	80
International Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	266	241
Mutual Funds -Equity [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	93	76
Mutual Funds -Equity [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	512	394
Common Collective Trust Equity Securities [Member] | Portion at Net Asset Value [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	457	364
Common Collective Trust Equity Securities [Member] | Portion at Net Asset Value [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	167	153
US Government Debt Securities [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
US Government Debt Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	1,412	889
Debt Security, Corporate, US [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	2	2
Debt Security, Corporate, US [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Debt Security Mutual Fund [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Debt Security Mutual Fund [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	392	363
Defined Benefit Plan, Common Collective Trust [Member] | Portion at Net Asset Value [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	637	548
Defined Benefit Plan, Common Collective Trust [Member] | Portion at Net Asset Value [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	760	641
Defined Benefit Plan, Cash and Cash Equivalents [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Defined Benefit Plan, Cash and Cash Equivalents [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	98	71
Defined Benefit Plan, Cash and Cash Equivalents [Member] | Portion at Net Asset Value [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	25	5
Defined Benefit Plan, Cash and Cash Equivalents [Member] | Portion at Net Asset Value [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Bank Time Deposits [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets		0
Bank Time Deposits [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets		6
Defined Benefit Plan, Derivative [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Defined Benefit Plan, Derivative [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	11	(17)
Defined Benefit Plan, Real Estate [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Defined Benefit Plan, Real Estate [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	132	124
Defined Benefit Plan, Real Estate [Member] | Portion at Net Asset Value [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	83	80
Defined Benefit Plan, Real Estate [Member] | Portion at Net Asset Value [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	112	109
Fair Value, Inputs, Level 1 [Member] | Fair Value, Disclosure Item Amounts [Domain] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	285	230
Fair Value, Inputs, Level 1 [Member] | Fair Value, Disclosure Item Amounts [Domain] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	2,859	2,137
Fair Value, Inputs, Level 1 [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	285	230
Fair Value, Inputs, Level 1 [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	2,859	2,137
Fair Value, Inputs, Level 1 [Member] | US Equity Securities [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	94	74
Fair Value, Inputs, Level 1 [Member] | US Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	435	371
Fair Value, Inputs, Level 1 [Member] | International Equity Securities [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	98	80
Fair Value, Inputs, Level 1 [Member] | International Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	266	241
Fair Value, Inputs, Level 1 [Member] | Mutual Funds -Equity [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	93	76
Fair Value, Inputs, Level 1 [Member] | Mutual Funds -Equity [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	245	213
Fair Value, Inputs, Level 1 [Member] | US Government Debt Securities [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] | US Government Debt Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	1,412	889
Fair Value, Inputs, Level 1 [Member] | Debt Security, Corporate, US [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] | Debt Security, Corporate, US [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] | Debt Security Mutual Fund [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] | Debt Security Mutual Fund [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	392	363
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	98	71
Fair Value, Inputs, Level 1 [Member] | Bank Time Deposits [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets		0
Fair Value, Inputs, Level 1 [Member] | Bank Time Deposits [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets		6
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Derivative [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Derivative [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	11	(17)
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Real Estate [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Real Estate [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Disclosure Item Amounts [Domain] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	2	2
Fair Value, Inputs, Level 2 [Member] | Fair Value, Disclosure Item Amounts [Domain] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	267	181
Fair Value, Inputs, Level 2 [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	2	2
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	267	181
Fair Value, Inputs, Level 2 [Member] | US Equity Securities [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | US Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | International Equity Securities [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | International Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | Mutual Funds -Equity [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | Mutual Funds -Equity [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	267	181
Fair Value, Inputs, Level 2 [Member] | US Government Debt Securities [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | US Government Debt Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | Debt Security, Corporate, US [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	2	2
Fair Value, Inputs, Level 2 [Member] | Debt Security, Corporate, US [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | Debt Security Mutual Fund [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | Debt Security Mutual Fund [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | Bank Time Deposits [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets		0
Fair Value, Inputs, Level 2 [Member] | Bank Time Deposits [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets		0
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Derivative [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Derivative [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Real Estate [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Real Estate [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Disclosure Item Amounts [Domain] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	7	20
Fair Value, Inputs, Level 3 [Member] | Fair Value, Disclosure Item Amounts [Domain] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	132	124
Fair Value, Inputs, Level 3 [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	7	20
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	132	124
Fair Value, Inputs, Level 3 [Member] | US Equity Securities [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	7	20
Fair Value, Inputs, Level 3 [Member] | US Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | International Equity Securities [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | International Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Mutual Funds -Equity [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Mutual Funds -Equity [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | US Government Debt Securities [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | US Government Debt Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Debt Security, Corporate, US [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Debt Security, Corporate, US [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Debt Security Mutual Fund [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Debt Security Mutual Fund [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Bank Time Deposits [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets		0
Fair Value, Inputs, Level 3 [Member] | Bank Time Deposits [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets		0
Fair Value, Inputs, Level 3 [Member] | Defined Benefit Plan, Derivative [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Defined Benefit Plan, Derivative [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Defined Benefit Plan, Real Estate [Member] | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Defined Benefit Plan, Real Estate [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Selected Plan Assets	$ 132	$ 124

Employee Benefit Plans - Fair_2

Employee Benefit Plans - Fair values of pension plan assets (Details) (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Net payables related to security transactions	$ 9	$ 16
Insurance Contract Rights And Obligations Fair Value Option [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value Of Participating Interest In Annuity Contract	$ 95	$ 84

Employee Benefit Plans - Fundin

Employee Benefit Plans - Funding Policy (Details) - Retirement Plan Tax Status [Domain] $ in Millions	Dec. 31, 2019USD ($)
U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	$ 350
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	$ 90

Employee Benefit Plans - Bene_2

Employee Benefit Plans - Benefit payments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Benefit payments excluding the participating annuity contract and which reflect expected future service, as appropriate, are expected to be paid:
Compensation cost	$ 274	$ 265	$ 227
Tax benefit	71	$ 64	$ 76
Pension Plans Defined Benefit [Member] | U.S.
Benefit payments excluding the participating annuity contract and which reflect expected future service, as appropriate, are expected to be paid:
2020	447
2021	270
2022	250
2023	217
2024	220
2025-2029	822
Pension Plans Defined Benefit [Member] | Foreign Pension Plans, Defined Benefit [Member]
Benefit payments excluding the participating annuity contract and which reflect expected future service, as appropriate, are expected to be paid:
2020	150
2021	156
2022	158
2023	163
2024	170
2025-2029	927
Other Postretirement Benefit Plans, Defined Benefit [Member]
Benefit payments excluding the participating annuity contract and which reflect expected future service, as appropriate, are expected to be paid:
2020	32
2021	29
2022	27
2023	24
2024	22
2025-2029	$ 64

Employee Benefit Plans - Severa

Employee Benefit Plans - Severances (Details) - Employee Severance [Member] $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)
Supplemental Unemployment Benefits [Line Items]
Balance at December 31, 2018	$ 48
Accruals	(1)
Benefit payments	(24)
Balance at December 31, 2019	23
Short term supplemental unemployment benefits [Member]
Supplemental Unemployment Benefits [Line Items]
Balance at December 31, 2019	$ 5

Employee Benefit Plans - Other

Employee Benefit Plans - Other Plan Narrative (Details) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)shares	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Share-based Compensation Plan
Defined Benefit Plan Disclosure [Line Items]
Share Based Compensation Plan, number of shares authorized | shares	79
Other Postretirement Benefit Plans, Defined Benefit [Member] | Share-based Compensation Plan
Defined Benefit Plan Disclosure [Line Items]
Deferred Compensation Arrangement with Individual, Maximum Contractual Term	10 years
U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan Maximum Annual Contributions Per Employee Percent	75.00%
Number Of Investment Funds In Which Employee Can Contribute [Member]	(17)
Defined Contribution Plan, Employer Matching Contribution, Percent	1.00%
Defined Contribution Plan Employer Matching Contribution Percent Of Match	6.00%
Employer Matching Discretionary Contribution Percent	6.00%
Company contributions charged to expense for defined contribution plan | $	$ 82	$ 82	$ 77
U.S. | cop_IncentiveStockOptionsMember [Member]
Defined Benefit Plan Disclosure [Line Items]
Share Based Compensation Plan, number of shares authorized | shares	40
U.S. | Company Retirement Contribution (CRC)
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan Employer Matching Contribution Percent Of Match	6.00%
Defined Contribution Plan Employers Vesting Period	3 years
Defined contribution plan employers vesting percent	100.00%
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contributions charged to expense for defined contribution plan | $	$ 30	$ 31	$ 35

Employee Benefit Plans - Weight

Employee Benefit Plans - Weighted Average Assumptions (Details)	12 Months Ended
	Dec. 31, 2017
Assumptions used
Risk-free interest rate	2.24%
Dividend yield	4.00%
Volatility factor	28.12%
Expected life (years)	6 years 4 months 20 days

Employee Benefit Plans - Stock

Employee Benefit Plans - Stock option activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Summary of Stock Options Activity
Weighted-Average Exercise Price at the beginning of year	$ 52.88
Weighted-Average Exercise Price, exercised	36.28
Weighted-Average Exercise Price at the end of year	54.11	$ 52.88
Weighted-Average Exercise Price, Vested	54.14
Weighted-Average Exercise Price, Exercisable	$ 54.33
Aggregate Intrinsic Value, outstanding at the beginning of the year	$ 214,000,000
Aggregate Intrinsic Value, exercised	39,000,000
Aggregate Intrinsic Value, outstanding at the end of the year	206,000,000	$ 214,000,000
Aggregate Intrinsic Value, vested	205,000,000
Aggregate Intrinsic Value, exercisable	$ 194,000,000
Stock option, Outstanding at the beginning of year	19,379,677
Stock option, exercised	(1,339,480)
Stock option, forfeited	0
Stock option, expired or cancelled	0
Stock options, Outstanding at the end of year	18,040,197	19,379,677
Stock option, Vested	17,922,026
Stock option, Exercisable at End of Year	17,172,815
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate Intrinsic Value, exercised	$ 39,000,000
Employee Stock Option [Member] | 2014 Omnibus Stock And Performance Incentive Plan Of ConocoPhillips [Member]
Summary of Stock Options Activity
Weighted-Average Grant-Date Fair Value, granted			$ 9.18
Aggregate Intrinsic Value, exercised		$ 94,000,000	$ 4,000,000
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average remaining contractual term of outstanding options	4 years 5 months 4 days
Weighted-average remaining contractual term of vested options	4 years 4 months 28 days
Weighted-average remaining contractual term exercisable	4 years 3 months 14 days
Weighted-Average Grant-Date Fair Value, granted			$ 9.18
Aggregate Intrinsic Value, exercised		$ 94,000,000	$ 4,000,000
Cash received from exercise of stock options	$ 49,000,000
Tax benefit from exercise of options	13,000,000
Unrecognized compensation cost from stock options	$ 0

Employee Benefit Plans - Stoc_2

Employee Benefit Plans - Stock unit activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Summary of stock unit activity
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number	17,172,815
RSU Stock Settled [Member]
Summary of stock unit activity
Stock Units, Outstanding Beginning of year	7,546,973
Stock Units, Granted	2,045,503
Stock Units, Forfeited / Cancelled	(99,748)
Stock Units, Issued	(3,269,682)
Stock Units, Outstanding End of year	6,223,046	7,546,973
Not Vested at End of Year	4,185,141
Weighted-Average Grant-Date Fair Value, beginning of year	$ 43.41
Weighted-Average Grant-Date Fair Value, Granted	67.77
Weighted-Average Grant-Date Fair Value, Forfeited / Cancelled	62.93
Weighted-Average Grant-Date Fair Value, Issued	34.32
Weighted-Average Grant-Date Fair Value, ending of year	55.99	$ 43.41
Weighted-Average Grant-Date Fair Value Not Vested, ending of year	$ 56.17
Total Fair Value, Issued	$ 225,000	$ 154,000	$ 159,000
Employee Benefit Plans Additional (Textual) [Abstract]
Unrecognized compensation cost from stock options	$ 93,000
Weighted average period of recognition of unvested options, in months	1 year 8 months 15 days
Longest weighted-average period of recognition of unvested options, in months	2 years 8 months 23 days
Weighted-Average Grant-Date Fair Value, granted		$ 52.45	$ 48.77
Total Fair Value, Issued	$ 225,000	$ 154,000	$ 159,000
RSU Cash Settled [Member]
Summary of stock unit activity
Stock Units, Outstanding Beginning of year	376,608
Stock Units, Granted	319,552
Stock Units, Forfeited / Cancelled	(6,914)
Stock Units, Issued	(92,255)
Stock Units, Outstanding End of year	596,991	376,608
Not Vested at End of Year	153,457
Weighted-Average Grant-Date Fair Value, beginning of year	$ 62.21
Weighted-Average Grant-Date Fair Value, Granted	68.20
Weighted-Average Grant-Date Fair Value, Forfeited / Cancelled	61.35
Weighted-Average Grant-Date Fair Value, Issued	61.61
Weighted-Average Grant-Date Fair Value, ending of year	64.54	$ 62.21
Weighted-Average Grant-Date Fair Value Not Vested, ending of year	$ 64.54
Total Fair Value, Issued	$ 6,000	$ 1,000
Employee Benefit Plans Additional (Textual) [Abstract]
Unrecognized compensation cost from stock options	$ 5,000
Weighted average period of recognition of unvested options, in months	1 year 8 months 12 days
Longest weighted-average period of recognition of unvested options, in months	2 years 1 month 13 days
Weighted-Average Grant-Date Fair Value, granted		$ 53.68
Total Fair Value, Issued	$ 6,000	$ 1,000

Employee Benefit Plans - Perfor

Employee Benefit Plans - Performance share activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
PSU Stock Settled [Member]
Summary of Performance Share Program activity
Stock Units, Outstanding Beginning of year	2,335,542
Stock Units, Granted	77,841
Stock Units, Forfeited / Cancelled	0
Stock Units, Issued	(388,559)
Stock Units, Outstanding End of year	2,024,824	2,335,542
Not Vested at End of Year	15,616
Weighted-Average Grant-Date Fair Value, beginning of year	$ 50.45
Weighted-Average Grant-Date Fair Value, Granted	68.90
Weighted-Average Grant-Date Fair Value, Issued	53.66
Weighted-Average Grant-Date Fair Value, ending of year	50.55	$ 50.45
Weighted-Average Grant-Date Fair Value Not Vested, ending of year	$ 47.80
Total Fair Value, Issued	$ 25,000,000	$ 29,000,000	$ 57,000,000
Employee Benefit Plans Additional (Textual) [Abstract]
Unrecognized compensation cost from stock options	0
Weighted-Average Grant-Date Fair Value, granted		$ 53.28	$ 49.76
Total Fair Value, Issued	$ 25,000,000	$ 29,000,000	$ 57,000,000
PSU Cash Settled [Member]
Summary of Performance Share Program activity
Stock Units, Outstanding Beginning of year	1,131,007
Stock Units, Granted	1,958,043
Stock Units, Forfeited / Cancelled	0
Stock Units, Issued	(2,479,776)
Stock Units, Outstanding End of year	609,274	1,131,007
Not Vested at End of Year	38,487
Weighted-Average Grant-Date Fair Value, beginning of year	$ 62.21
Weighted-Average Grant-Date Fair Value, Granted	68.90
Weighted-Average Grant-Date Fair Value, Issued	69.10
Weighted-Average Grant-Date Fair Value, ending of year	64.54	$ 62.21
Weighted-Average Grant-Date Fair Value Not Vested, ending of year	$ 64.54
Total Fair Value, Issued	$ 171,000,000	$ 22,000,000	$ 24,000,000
Employee Benefit Plans Additional (Textual) [Abstract]
Unrecognized compensation cost from stock options	0
Weighted-Average Grant-Date Fair Value, granted		$ 53.28	$ 49.76
Total Fair Value, Issued	$ 171,000,000	$ 22,000,000	$ 24,000,000

Employee Benefit Plans - Restri

Employee Benefit Plans - Restricted shares and units (Details) - Restricted Stock Units (RSUs) [Member] - Discontinued Operations [Member] - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Summary of aggregate activity of restricted shares and units
Stock Units, Outstanding Beginning of year	1,107,315
Stock Units, Granted	64,063
Stock Units, Forfeited / Cancelled	(2,307)
Stock Units, Issued	(177,163)
Stock Units, Outstanding End of year	991,908	1,107,315
Weighted-Average Grant-Date Fair Value, beginning of year	$ 46.57
Weighted-Average Grant-Date Fair Value, Granted	63.58
Weighted-Average Grant-Date Fair Value, Forfeited / Cancelled	23.73
Weighted-Average Grant-Date Fair Value, Issued	49.23
Weighted-Average Grant-Date Fair Value, ending of year	$ 47.24	$ 46.57
Total Fair Value, Issued	$ 11,000,000	$ 17,000,000	$ 4,000,000
Employee Benefit Plans Additional (Textual) [Abstract]
Unrecognized compensation cost from stock options	0
Weighted-Average Grant-Date Fair Value, granted		$ 62.01	$ 48.87
Total Fair Value, Issued	$ 11,000,000	$ 17,000,000	$ 4,000,000

Employee Benefits Plans (Detail

Employee Benefits Plans (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive Income, Defined Benefit Plan, Net Prior Service Cost (Credit) Arising During Period, before Tax	$ 0	$ 7	$ (2)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements	0	0	0
Defined Benefit Plan Special Termination Benefits	0	0
Defined Benefit Plan, Actual Return on Plan Assets	0	0
Defined Benefit Plan, Plan Amendments	0	0
Other Comprehensive Income, Defined Benefit Plan, Net Prior Service Cost (Credit) Arising During Period, before Tax	0	0
U.S. | Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements	(62)	(196)	(131)
Defined Benefit Plan Special Termination Benefits	0	3
Defined Benefit Plan, Actual Return on Plan Assets	273	(112)
Defined Benefit Plan, Plan Amendments	0	0
Other Comprehensive Income, Defined Benefit Plan, Net Prior Service Cost (Credit) Arising During Period, before Tax	0	0
U.S. | Qualified Plan [Member] | Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements	(62)	(196)	(131)
Foreign Plan [Member] | Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements	0	0	$ 0
Defined Benefit Plan Special Termination Benefits	1	0
Defined Benefit Plan, Actual Return on Plan Assets	529	(106)
Defined Benefit Plan, Plan Amendments	0	7
Other Comprehensive Income, Defined Benefit Plan, Net Prior Service Cost (Credit) Arising During Period, before Tax	0	$ 7
Fair Value, Inputs, Level 3 [Member] | U.S. | Participating interest in annuity contract | Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease)	7
Defined Benefit Plan, Actual Return on Plan Assets	$ (4)

Employee Benefits Plans (Deta_2

Employee Benefits Plans (Details Textual 1) - Share-based Compensation Plan	12 Months Ended
	Dec. 31, 2019
Employee Stock Option [Member]
Employee Benefit Plans Additional (Textual) [Abstract]
Stock Options Terms of Award	Stock options granted under the provisions of the Plan and prior plans permit purchase of our common stock at exercise prices equivalent to the average fair market value of ConocoPhillips common stock on the date the options were granted. The options have terms of 10 years and generally vest ratably, with one-third of the options awarded vesting and becoming exercisable on each anniversary date following the date of grant. Options awarded to certain employees already eligible for retirement vest within six months of the grant date, but those options do not become exercisable until the end of the normal vesting period. Beginning in 2018, stock option grants were discontinued and replaced with three-year, time-vested restricted stock units which generally will be cash-settled.
Restricted Stock Units (RSUs) [Member]
Employee Benefit Plans Additional (Textual) [Abstract]
Stock Options Terms of Award	Generally, restricted stock units are granted annually under the provisions of the Plan and vest in an aggregate installment on the third anniversary of the grant date. In addition, restricted stock units granted under the Plan for a variable long-term incentive program vest ratably in three equal annual installments beginning on the first anniversary of the grant date. Restricted stock units are also granted ad hoc to attract or retain key personnel, and the terms and conditions under which these restricted stock units vest vary by award
RSU Stock Settled [Member]
Employee Benefit Plans Additional (Textual) [Abstract]
Stock Options Terms of Award	Upon vesting, these restricted stock units are settled by issuing one share of ConocoPhillips common stock per unit. Units awarded to retirement eligible employees vest six months from the grant date; however, those units are not issued as common stock until the earlier of separation from the company or the end of the regularly scheduled vesting period. Until issued as stock, most recipients of the restricted stock units receive a quarterly cash payment of a dividend equivalent that is charged to retained earnings. The grant date fair market value of these restricted stock units is deemed equal to the average ConocoPhillips stock price on the grant date. The grant date fair market value of units that do not receive a dividend equivalent while unvested is deemed equal to the average ConocoPhillips stock price on the grant date, less the net present value of the dividends that will not be received
RSU Cash Settled [Member]
Employee Benefit Plans Additional (Textual) [Abstract]
Stock Options Terms of Award	Beginning in 2018, cash-settled executive restricted stock units replaced the stock option program. These restricted stock units, subject to elections to defer, will be settled in cash equal to the fair market value of a share of ConocoPhillips common stock per unit on the settlement date and are classified as liabilities on the balance sheet. Units awarded to retirement eligible employees vest six months from the grant date; however, those units are not settled until the earlier of separation from the company or the end of the regularly scheduled vesting period. Compensation expense is initially measured using the average fair market value of ConocoPhillips common stock and is subsequently adjusted, based on changes in the ConocoPhillips stock price through the end of each subsequent reporting period, through the settlement date. Recipients receive an accrued reinvested dividend equivalent that is charged to compensation expense. The accrued reinvested dividend is paid at the time of settlement, subject to the terms and conditions of the award.
PSU Stock Settled [Member]
Employee Benefit Plans Additional (Textual) [Abstract]
Stock Options Terms of Award	For performance periods beginning before 2009, PSUs do not vest until the employee becomes eligible for retirement by reaching age 55 with five years of service, and restrictions do not lapse until the employee separates from the company. With respect to awards for performance periods beginning in 2009 through 2012, PSUs do not vest until the earlier of the date the employee becomes eligible for retirement by reaching age 55 with five years of service or five years after the grant date of the award, and restrictions do not lapse until the earlier of the employee’s separation from the company or five years after the grant date (although recipients can elect to defer the lapsing of restrictions until separation). We recognize compensation expense for these awards beginning on the grant date and ending on the date the PSUs are scheduled to vest. Since these awards are authorized three years prior to the grant date, for employees eligible for retirement by or shortly after the grant date, we recognize compensation expense over the period beginning on the date of authorization and ending on the date of grant. Until issued as stock, recipients of the PSUs receive a quarterly cash payment of a dividend equivalent that is charged to retained earnings. Beginning in 2013, PSUs authorized for future grants will vest, absent employee election to defer, upon settlement following the conclusion of the three-year performance period. We recognize compensation expense over the period beginning on the date of authorization and ending on the conclusion of the performance period. PSUs are settled by issuing one share of ConocoPhillips common stock per unit.
PSU Cash Settled [Member]
Employee Benefit Plans Additional (Textual) [Abstract]
Stock Options Terms of Award	Beginning in February 2014, initial target PSU awards are issued near the beginning of new performance periods. These initial target PSU awards will terminate at the end of the performance periods and will be settled after the performance periods have ended. Also in 2014, initial target PSU awards were issued for open performance periods that began in prior years. For the open performance period beginning in 2012, the initial target PSU awards terminated at the end of the three-year performance period and were replaced with approved PSU awards. For the open performance period beginning in 2013, the initial target PSU awards terminated at the end of the three-year performance period and were settled after the performance period ended.

Income Taxes - Components of pr

Income Taxes - Components of provision (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Federal
Current	$ 18	$ 4	$ 79
Deferred	(113)	545	(3,046)
Foreign
Current	2,545	3,273	1,729
Deferred	(323)	(166)	(510)
State and local
Current	148	108	51
Deferred	(8)	(96)	(125)
Total provision (benefit) for income taxes	$ 2,267	$ 3,668	$ (1,822)

Income Taxes - Components of de

Income Taxes - Components of deferred tax liabilties and assets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 02, 2019	Dec. 31, 2018
Deferred Tax Liabilities
Properties, plants and equipment, and intangibles	$ 8,660		$ 8,004
Inventory	35		60
Deferred state income tax	0		61
Other	234		156
Total deferred tax liabilities	8,929		8,281
Deferred Tax Assets
Benefit plan accruals	542		641
Asset retirement obligations and accrued environmental costs	2,339		2,891
Investments in joint ventures (Asset)	1,722		104
Other financial accruals and deferrals	777		330
Loss and credit carryforwards	8,968		2,378
Other	345		398
Total deferred tax assets	14,693		6,742
Less valuation allowance	(10,214)		(3,040)
Net deferred tax assets	4,479	$ 151	3,702
Total deferred tax liabilities	$ 4,450		$ 4,579

Income Taxes - Carryforwards (D

Income Taxes - Carryforwards (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 02, 2019	Dec. 31, 2018
Income Taxes [Abstract]
U.S. foreign tax credits	$ 7,696	$ 6,642
U.S. general business credits	250
Capital Loss Carryforward	202
State net operating losses and tax credits	370
Foreign net operating losses and tax credits	450
Total loss and credit carryforwards	8,968		$ 2,378
DTA Net of Valuation Allowance, U.S. foreign tax credits	14
DTA Net of Valuation Allowance, U.S. general business tax credits	250
DTA Net Of Valuaton Allowance U S Capital Loss	32
DTA Net of Valuation Allowance, State net operating losses and tax credits	50
DTA Net of Valuation Allowance, Foreign net operating losses and tax credits	413
Total DTA, Net of Valuation Allowance, Tax Credits And Operating Loss Carryforwards	$ 759
Epiration date of U.S. foreign tax credits	2028
Expiration date of U.S. general business credits	2036-2038
Expiration Date Of U.S. Capital Loss	2024
Expiration Date Of State Net Operating Loss And Tax Credit	Various
Expiration date of Foreign net operating losses and tax credits	Post 2025

Income Taxes - Unrecognized Tax

Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of the beginning and ending unrecognized tax benefits
Unrecognized Tax Benefits, Balance at January 1	$ 1,081	$ 882	$ 381
Additions based on tax positions related to the current year	9	268	612
Additions for tax positions of prior years	120	43	109
Reductions for tax positions of prior years	(22)	(73)	(129)
Settlements	(9)	(35)	(5)
Lapse of statute	(2)	(4)	(86)
Unrecognized Tax Benefits, Balance at December 31	$ 1,177	$ 1,081	$ 882

Income Taxes - U.S. and foreign

Income Taxes - U.S. and foreign income (loss) from continuing operations before income taxes, with a reconciliation of tax at the federal statutory rate with the provision for income taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Abstract]
Income (loss) before taxes - United States	$ 4,704	$ 2,867	$ (5,250)
Income Loss Before Income Taxes Foreign	4,820	7,106	2,635
Income (loss) before income taxes	9,524	9,973	(2,615)
Federal statutory income tax	2,000	2,095	(915)
Non-U.S. effective tax rates	1,399	1,766	625
Tax Legislation	0	(10)	(852)
Canada disposition	0	0	(1,277)
U.K. disposition	(732)	(150)	0
Recovery of outside basis	(77)	(21)	(962)
Adjustment to tax reserves, amount	9	(4)	881
Adjustment to valuation allowances	(225)	(26)	0
APLNG impairment	0	0	834
State income tax	123	135	(84)
Enhanded oil recovery credit	(27)	(99)	(68)
Malaysia Deepwater TaxCredits Incentive	(164)	0	0
Other	(39)	(18)	(4)
Total provision (benefit) for income taxes	$ 2,267	$ 3,668	$ (1,822)
Income (loss) before income taxes, United States, Percentage	49.40%	28.70%	200.80%
Income (loss) before income taxes, foreign, percentage	50.60%	71.30%	(100.80%)
Income (Loss) Before Income Taxes In Percent	100.00%	100.00%	100.00%
Federal statutory rate percentage	21.00%	21.00%	35.00%
Tax legislation, percentage	0.00%	(0.10%)	32.60%
Canada disposition, percentage	0.00%	0.00%	48.80%
U.K. disposition, percentage	(7.70%)	(1.50%)	0.00%
Recovery of outside basis, percentage	(0.80%)	(0.20%)	36.80%
Adjustment to valuation allowances	(2.40%)	(0.30%)	0.00%
APLNG Impairment, percentage	0.00%	0.00%	(31.90%)
State income tax, percentage	1.30%	1.40%	3.20%
Enhanced oil recovery, percentage	(0.30%)	(1.00%)	2.60%
Other, percentage	(0.40%)	(0.20%)	0.20%
Adjustment to tax reserves, percentage	0.10%	0.00%	(33.70%)
Effective Income Tax Rate, Continuing Operations, percetage	23.80%	36.80%	69.70%
Malaysia Deepwater Tax Credits Incentive, Percentage	(1.70%)	0.00%	0.00%
Non US effective tax rates percentage	14.70%	17.70%	(23.90%)

Income Taxes - Textuals (Detail

Income Taxes - Textuals (Details) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 02, 2019
Income Tax Examination [Line Items]
Deferred taxes Included in long-term liabilities	$ 4,634,000,000		$ 4,634,000,000	$ 5,021,000,000
Increase (decrease) in valuation allowance	6,642,000,000		7,174,000,000
Deferred Tax Assets Net	4,479,000,000		4,479,000,000	3,702,000,000		$ 151,000,000
U.S. foreign tax credits	7,696,000,000		7,696,000,000			$ 6,642,000,000
Undistributed Earnings of Foreign Subsidiaries	4,196,000,000		4,196,000,000
Estimated Tax Payable On Undistributed Unremitted Foreign Income			210,000,000
Unrecognized tax benefits that if recognized, would affect effective tax rate	1,100,000,000		1,100,000,000	1,081,000,000	$ 882,000,000
Accrued liabilities for interest and penalties	42,000,000		42,000,000	45,000,000	54,000,000
Interest and penalties (benefiting) charging earnings			3,000,000	4,000,000	0
Tax Legislation			0	(10,000,000)	(852,000,000)
Tax Cuts and Jobs Act, Decrease in Deferred Tax Liability due to Transition Tax			10,000,000	908,000,000
One time tranisition tax				(10,000,000)	56,000,000
Adjustment to valuation allowances			(225,000,000)	(26,000,000)	0
Income Tax Expense (Benefit)			2,267,000,000	3,668,000,000	(1,822,000,000)
Worthless Security Deduction			9,000,000	36,000,000	962,000,000
Income Tax Loss (Benefit) related to U.K. disposition			(732,000,000)	(150,000,000)	0
Malaysia Deepwater Tax Credits Incentive			164,000,000	0	0
Capital Loss Carryforward	202,000,000		202,000,000
Noncurrent Asset
Income Tax Examination [Line Items]
Deferred taxes Included in long-term assets	184,000,000		184,000,000	442,000,000
Noncurrent Liabilities
Income Tax Examination [Line Items]
Deferred taxes Included in long-term liabilities	4,634,000,000		4,634,000,000	5,021,000,000
Clair Field [Member]
Income Tax Examination [Line Items]
Gain (Loss) on Sale of Oil and Gas Property			1,700,000,000	$ 715,000,000
Income Tax Expense (Benefit)			(335,000,000)
Income Tax Loss (Benefit) related to U.K. disposition			285,000,000
Malaysia Deepwater Tax Credits Incentive		$ 164,000,000
Capital Loss Carryforward	$ 2,100,000,000		$ 2,100,000,000
Foster Creek Christina Lake (FCCL) and western Canada gas properties [Member]
Income Tax Examination [Line Items]
Increase (decrease) in valuation allowance					822,000,000
Tax impact of Canada disposition					(1,277,000,000)
Income Tax Expense (Benefit)					$ (822,000,000)

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plans, Beginning Balance	$ (361)	$ (400)	$ (547)
Other Comprehensive Income (Loss), Defined Benefit Plans	(51)	(39)	(147)
Defined Benefit Plans, Ending Balance	(350)	(361)	(400)
Net Unrealized Gain on Securities, Beginning Balance	0	(58)
Unrealized loss on securities, net of tax	0	0	(58)
Net Unrealized Gain on Securities, Ending Balance	0	0	(58)
Foreign Currency Translation, Beginning Balance	(5,702)	(5,060)	(5,646)
Other comprehensive income (loss), Foreign Currency Translation	695	(642)	586
Foreign Currency Translation, Ending Balance	(5,007)	(5,702)	(5,060)
Accumulated Other Comprehensive Income (loss), Beginning Balance	(6,063)	(5,518)	(6,193)
Other comprehensive income (loss), net of tax	746	(603)	675
Accumulated Other Comprehensive Income (loss), Ending Balance	(5,357)	(6,063)	$ (5,518)
ASU 2016-01 Accounting for Cenovus Shares [Member] | Restatement Adjustment [Member]
Other comprehensive income (loss), net of tax		$ 58
ASU 2018-02 [Member]
Other Comprehensive Income (Loss), Defined Benefit Plans	40
Other comprehensive income (loss), net of tax	$ (40)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income Textual (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other comprehensive income (loss), Foreign Currency Translation	$ 695	$ (642)	$ 586
U.K. Subsidiaries [Member]
Other comprehensive income (loss), Foreign Currency Translation	$ 483

Accumulated Other Comprehensi_5

Accumulated Other Comprehensive Income - Reclassifications out of other comprehensive income (loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive (Income) Loss Reclassification Adjustment From AOCI Pension And Other Postretirement Benefit Plans, Net Of Tax	$ 88	$ 189
Other Comprehensive (Income) Loss Reclassification Adjustment From AOCI Pension And Other Postretirement Benefit Plans, Tax	$ 23	$ 50

Cash Flow Information (Details)

Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Increase in PP&E related to increase in asset retirement obligations	$ 205	$ 395	$ (37)
Interest Paid, Net	810	772	1,163
Income Taxes Paid, Net	2,905	2,976	1,168
Payments for (Proceeds from) Short-term Investments [Abstract]
Short-term investments purchased	(4,902)	(1,953)	(6,617)
Short-term investments sold	2,138	3,573	4,827
Long-term investments purchased	(146)	0	0
Net Sales (Purchases) of Investments	2,910	(1,620)	1,790
Nonmonetary Transactions [Abstract]
Accounts receivable Acquired	0	(44)	0
Inventories Acquired	0	42	0
Investments Acquired	0	15	0
PPE Acquired	0	1,907	0
Other Long Term Assets Acquired	0	(9)	0
Accounts Payable	0	7	0
Accrued income and other taxes	$ 0	$ 40	$ 0

Cash Flow Information - Parenth

Cash Flow Information - Parenthetical (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flow Information [Abstract]
Discretionary payment to domestic qualified pension plan.	$ 324	$ 120	$ 600
ConocoPhillips Vs Petroleos de Venezuela SA [Member]
Loss Contingencies [Line Items]
Cash Proceeds from Legal Settlements	$ 330	430
Burlington Resources Inc Vs The Republic Of Ecuador [Member]
Loss Contingencies [Line Items]
Cash Proceeds from Legal Settlements		$ 262	75
Currency Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Payments for Foreign Currency Derivative Instruments Not Designated as Hedging Instruments			$ 180

Other Financial Information (De

Other Financial Information (Details) - USD ($)		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Production and Operating Expenses		$ 5,322,000,000	$ 5,213,000,000	$ 5,162,000,000
Foreign Currency Transaction [Abstract]
Foreign Currency Transaction Gain Loss After Tax		58,000,000	(13,000,000)	31,000,000
Incurred
Debt		799,000,000	838,000,000	1,114,000,000
Other		36,000,000	67,000,000	103,000,000
Interest Costs Incurred, Total		835,000,000	905,000,000	1,217,000,000
Capitalized		(57,000,000)	(170,000,000)	(119,000,000)
Expensed		778,000,000	735,000,000	1,098,000,000
Other Income
Interest income		166,000,000	97,000,000	112,000,000
Unrealized Gain (Loss) on Securities, before tax	[1]	649,000,000	(437,000,000)	0
Other, net		543,000,000	513,000,000	417,000,000
Other Nonoperating Income		1,358,000,000	173,000,000	529,000,000
Research and Development Expenditures - expensed		82,000,000	78,000,000	100,000,000
Shipping and Handling [Member]
Segment Reporting Information [Line Items]
Production and Operating Expenses		1,008,000,000	1,075,000,000	1,050,000,000
Corporate, Non-Segment [Member]
Foreign Currency Transaction [Abstract]
Foreign Currency Transaction Gain Loss After Tax		21,000,000	21,000,000	(3,000,000)
Incurred
Expensed		778,000,000	735,000,000	1,098,000,000
Other Income
Interest income		149,000,000	80,000,000	101,000,000
Alaska Segment [Member] | Operating Segments [Member]
Foreign Currency Transaction [Abstract]
Foreign Currency Transaction Gain Loss After Tax		0	0	0
Other Income
Interest income		0	0	0
Lower 48 Segment [Member] | Operating Segments [Member]
Foreign Currency Transaction [Abstract]
Foreign Currency Transaction Gain Loss After Tax		0	0	0
Other Income
Interest income		0	0	0
Canada Segment [Member] | Operating Segments [Member]
Foreign Currency Transaction [Abstract]
Foreign Currency Transaction Gain Loss After Tax		5,000,000	(11,000,000)	3,000,000
Other Income
Interest income		0	0	0
Europe and North Africa Segment [Member] | Operating Segments [Member]
Foreign Currency Transaction [Abstract]
Foreign Currency Transaction Gain Loss After Tax		0	(26,000,000)	7,000,000
Other Income
Interest income		2,000,000	2,000,000	2,000,000
Asia Pacific and Middle East Segment [Member] | Operating Segments [Member]
Foreign Currency Transaction [Abstract]
Foreign Currency Transaction Gain Loss After Tax		31,000,000	3,000,000	23,000,000
Other Income
Interest income		15,000,000	15,000,000	9,000,000
Other International Segment [Member] | Operating Segments [Member]
Foreign Currency Transaction [Abstract]
Foreign Currency Transaction Gain Loss After Tax		1,000,000	0	1,000,000
Other Income
Interest income		$ 0	$ 0	$ 0
[1]	*See Note 7—Investment in Cenovus Energy, for additional information.

Other Financial Information - P

Other Financial Information - Property, Plant and Equipment (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Properties, Plants And Equipment
Proved properties	$ 88,284,000,000	$ 100,657,000,000
Unproved properties	3,980,000,000	4,662,000,000
Other	5,482,000,000	5,278,000,000
Gross properties, plants and equipment	97,746,000,000	110,597,000,000
Accumulated depreciation	(55,477,000,000)	(64,899,000,000)
Properties, plants and equipment, net	$ 42,269,000,000	$ 45,698,000,000

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Operating revenues and other income		$ 0	$ 0	$ 0
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Operating revenues and other income		89	98	107
Purchases		38	98	99
Operating expenses and selling, general and administrative expenses		65	60	59
Net interest (income) expense *	[1]	$ (13)	$ (14)	$ (13)
[1]	<div>*We paid interest to, or received interest from, various affiliates. See Note 6—Investments, Loans and Long-Term Receivables, for additional information on loans to affiliated companies.</div>

Sales and Other Operating Rev_3

Sales and Other Operating Revenue - Transitional Arrangements (Details) - USD ($)		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Sales and Other Operating Revenue	[1]	$ 32,567,000,000	$ 36,417,000,000	$ 29,106,000,000
Contract with Customer, Timing of Satisfaction of Performance Obligation and Payment		We have entered into contractual arrangements where we license proprietary technology to customers related to the optimization process for operating LNG plants. The agreements typically provide for negotiated payments to be made at stated milestones. The payments are not directly related to our performance under the contract and are recorded as deferred revenue to be recognized as revenue when the customer can utilize and benefit from their right to use the license. Payments are received in installments over the construction period.
Accounting Standards Update 2014-09 [Member]
Sales and Other Operating Revenue		$ 26,106,000,000	$ 28,098,000,000	$ 20,525,000,000
[1]	<div>(1)Sales and other operating revenues are attributable to countries based on the location of the selling operation.</div>

Sales and Other Operating Rev_4

Sales and Other Operating Revenue - Practical Expedients (Details)	12 Months Ended
	Dec. 31, 2019
Revenue, Practical Expedient [Abstract]
Revenue, Practical Expedient, Initial Application and Transition, Nondisclosure of Transaction Price Allocation to Remaining Performance Obligation [true/false]	true
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.

Sales and Other Operating Rev_5

Sales and Other Operating Revenue - Revenue from Contracts With Customers (Details) - USD ($)		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue from contracts with customers	[1]	$ 32,567,000,000	$ 36,417,000,000	$ 29,106,000,000
Revenue, Performance Obligation, Description of Payment Terms		Payment is typically due within 30 days or less.
Physical gas contracts [Member]
Revenue from contracts with customers		$ 6,558,000,000	8,218,000,000	8,669,000,000
Crude oil product line [Member]
Revenue from contracts with customers		804,000,000	1,112,000,000	588,000,000
Natural Gas Product Line [Member]
Revenue from contracts with customers		5,313,000,000	6,734,000,000	7,811,000,000
Other Products [Member]
Revenue from contracts with customers		441,000,000	372,000,000	270,000,000
Financial Derivative Contracts [Member]
Revenue from contracts with customers		(97,000,000)	101,000,000	(88,000,000)
Lower 48 Segment [Member]
Revenue from contracts with customers		15,514,000,000	17,029,000,000	12,968,000,000
Lower 48 Segment [Member] | Physical gas contracts [Member]
Revenue from contracts with customers		4,989,000,000	6,358,000,000	6,302,000,000
Canada Segment [Member]
Revenue from contracts with customers		2,910,000,000	3,184,000,000	3,178,000,000
Canada Segment [Member] | Physical gas contracts [Member]
Revenue from contracts with customers		691,000,000	629,000,000	864,000,000
Europe and North Africa Segment [Member] | Physical gas contracts [Member]
Revenue from contracts with customers		878,000,000	1,231,000,000	1,503,000,000
Accounting Standards Update 2014-09 [Member]
Revenue from contracts with customers		$ 26,106,000,000	$ 28,098,000,000	$ 20,525,000,000
[1]	<div>(1)Sales and other operating revenues are attributable to countries based on the location of the selling operation.</div>

Sales and Other Operating Rev_6

Sales and Other Operating Revenue - Receivables and Contract Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accounts Receivable, Net	$ 2,372	$ 2,889
Revenue, Performance Obligation, Description of Payment Terms	Payment is typically due within 30 days or less.
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	We have entered into contractual arrangements where we license proprietary technology to customers related to the optimization process for operating LNG plants. The agreements typically provide for negotiated payments to be made at stated milestones. The payments are not directly related to our performance under the contract and are recorded as deferred revenue to be recognized as revenue when the customer can utilize and benefit from their right to use the license. Payments are received in installments over the construction period.
Contract with Customer, Liability [Abstract]
Contract with Customer, Liability Beginning Balance	$ 206
Contract with Customer, Liability, Cash Received	73
Contract with Customer, Liability, Revenue Recognized	199
Contract with Customer, Liability Ending Balance	80
Change in Contract with Customer, Liability [Abstract]
Contract with Customer, Liability, Revenue Recognized	$ 199
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Explanation	We expect to recognize the contract liabilities as of December 31, 2019, as revenue during 2021 and 2022.

Segment Disclosures - Analysis

Segment Disclosures - Analysis of Results by Operating Segment (Details) - USD ($)		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue	[1]	$ 32,567,000,000	$ 36,417,000,000	$ 29,106,000,000
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue		221,000,000	168,000,000	104,000,000
Alaska Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue		5,483,000,000	5,740,000,000	4,224,000,000
Lower 48 Segment [Member]
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue		15,514,000,000	17,029,000,000	12,968,000,000
Lower 48 Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue		15,468,000,000	16,989,000,000	12,964,000,000
Lower 48 Segment [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue		(46,000,000)	(40,000,000)	(4,000,000)
Canada Segment [Member]
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue		2,910,000,000	3,184,000,000	3,178,000,000
Canada Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue		1,769,000,000	2,024,000,000	2,619,000,000
Canada Segment [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue		(1,141,000,000)	(1,160,000,000)	(559,000,000)
Europe and North Africa Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue		5,101,000,000	6,635,000,000	5,181,000,000
Asia Pacific and Middle East [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue		4,525,000,000	4,861,000,000	4,014,000,000
Other International Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue		$ 0	$ 0	$ 0
[1]	<div>(1)Sales and other operating revenues are attributable to countries based on the location of the selling operation.</div>

Segment Disclosures - Depreciat

Segment Disclosures - Depreciation, Equity Earnings, Income Tax (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Depreciation, Depletion, Amortization, and Impairments
DD&A and Impairments	$ 6,495,000,000	$ 5,983,000,000	$ 13,446,000,000
Equity in Earnings of Affiliates
Equity in earnings of affiliates	779,000,000	1,074,000,000	772,000,000
Income Taxes
Total provision (benefit) for income taxes	2,267,000,000	3,668,000,000	(1,822,000,000)
Operating Segments [Member]
Depreciation, Depletion, Amortization, and Impairments
DD&A and Impairments	6,495,000,000	5,983,000,000	13,446,000,000
Equity in Earnings of Affiliates
Equity in earnings of affiliates	779,000,000	1,074,000,000	772,000,000
Corporate, Non-Segment [Member]
Depreciation, Depletion, Amortization, and Impairments
DD&A and Impairments	62,000,000	106,000,000	134,000,000
Equity in Earnings of Affiliates
Equity in earnings of affiliates	0	0	0
Income Taxes
Total provision (benefit) for income taxes	(233,000,000)	(103,000,000)	399,000,000
Alaska Segment [Member] | Operating Segments [Member]
Depreciation, Depletion, Amortization, and Impairments
DD&A and Impairments	805,000,000	760,000,000	1,026,000,000
Equity in Earnings of Affiliates
Equity in earnings of affiliates	7,000,000	6,000,000	7,000,000
Income Taxes
Total provision (benefit) for income taxes	472,000,000	376,000,000	(689,000,000)
Lower 48 Segment [Member] | Operating Segments [Member]
Depreciation, Depletion, Amortization, and Impairments
DD&A and Impairments	3,224,000,000	2,370,000,000	6,693,000,000
Equity in Earnings of Affiliates
Equity in earnings of affiliates	(159,000,000)	1,000,000	5,000,000
Income Taxes
Total provision (benefit) for income taxes	137,000,000	474,000,000	(2,453,000,000)
Canada Segment [Member] | Operating Segments [Member]
Depreciation, Depletion, Amortization, and Impairments
DD&A and Impairments	232,000,000	324,000,000	461,000,000
Equity in Earnings of Affiliates
Equity in earnings of affiliates	0	0	197,000,000
Income Taxes
Total provision (benefit) for income taxes	(43,000,000)	(96,000,000)	(616,000,000)
Europe and North Africa Segment [Member] | Operating Segments [Member]
Depreciation, Depletion, Amortization, and Impairments
DD&A and Impairments	887,000,000	1,041,000,000	1,313,000,000
Equity in Earnings of Affiliates
Equity in earnings of affiliates	16,000,000	16,000,000	10,000,000
Income Taxes
Total provision (benefit) for income taxes	1,435,000,000	2,265,000,000	1,165,000,000
Asia Pacific and Middle East Segment [Member] | Operating Segments [Member]
Depreciation, Depletion, Amortization, and Impairments
DD&A and Impairments	1,285,000,000	1,382,000,000	3,819,000,000
Equity in Earnings of Affiliates
Equity in earnings of affiliates	915,000,000	1,051,000,000	553,000,000
Income Taxes
Total provision (benefit) for income taxes	491,000,000	722,000,000	351,000,000
Other International Segment [Member] | Operating Segments [Member]
Depreciation, Depletion, Amortization, and Impairments
DD&A and Impairments	0	0	0
Equity in Earnings of Affiliates
Equity in earnings of affiliates	0	0	0
Income Taxes
Total provision (benefit) for income taxes	$ 8,000,000	$ 30,000,000	$ 21,000,000

Segment Disclosures - Net Incom

Segment Disclosures - Net Income (Loss), Investments, Total Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 18, 2018
Net Income (Loss) Attributable to ConocoPhillips
Net income (loss) attributable to ConocoPhillips	$ 7,189	$ 6,257	$ (855)
Investments In and Advances To Affiliates
Investments in and advances to affiliates	8,453	9,340	9,590
Total Assets
Total assets	70,514	69,980	73,362
Corporate, Non-Segment [Member]
Net Income (Loss) Attributable to ConocoPhillips
Net income (loss) attributable to ConocoPhillips	38	(1,667)	(2,136)
Investments In and Advances To Affiliates
Investments in and advances to affiliates	0	0	0
Total Assets
Total assets	11,164	8,573	11,456
Alaska Segment [Member] | Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips
Net income (loss) attributable to ConocoPhillips	1,466	1,814	1,520
Investments In and Advances To Affiliates
Investments in and advances to affiliates	83		56	$ 86
Total Assets
Total assets	15,453		12,108	14,648
Lower 48 Segment [Member] | Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips
Net income (loss) attributable to ConocoPhillips	(2,371)	1,747	436
Investments In and Advances To Affiliates
Investments in and advances to affiliates	35		402	378
Total Assets
Total assets	14,425		14,632	14,888
Canada Segment [Member] | Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips
Net income (loss) attributable to ConocoPhillips	2,564	63	279
Investments In and Advances To Affiliates
Investments in and advances to affiliates	0		0	0
Total Assets
Total assets	6,350		6,214	5,748
Europe and North Africa Segment [Member] | Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips
Net income (loss) attributable to ConocoPhillips	553	1,866	2,724
Investments In and Advances To Affiliates
Investments in and advances to affiliates	54		55	55
Total Assets
Total assets	8,121		11,870	9,883
Asia Pacific and Middle East Segment [Member] | Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips
Net income (loss) attributable to ConocoPhillips	(1,098)	2,070	1,929
Investments In and Advances To Affiliates
Investments in and advances to affiliates	8,281		9,077	8,821
Total Assets
Total assets	14,716		16,985	16,151
Other International Segment [Member] | Operating Segments [Member]
Net Income (Loss) Attributable to ConocoPhillips
Net income (loss) attributable to ConocoPhillips	167	$ 364	263
Investments In and Advances To Affiliates
Investments in and advances to affiliates	0		0	0
Total Assets
Total assets	$ 285		$ 97	$ 89

Segment Disclosures - Capital E

Segment Disclosures - Capital Expenditures and Interest (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Capital Expenditures and Investments
Consolidated capital expenditures and investments	$ 6,636	$ 6,750	$ 4,591
Interest Income and Expense
Interest income	166	97	112
Interest and debt expense	778	735	1,098
Corporate, Non-Segment [Member]
Capital Expenditures and Investments
Consolidated capital expenditures and investments	61	190	63
Interest Income and Expense
Interest income	149	80	101
Interest and debt expense	778	735	1,098
Alaska Segment [Member] | Operating Segments [Member]
Capital Expenditures and Investments
Consolidated capital expenditures and investments	1,513	1,298	815
Interest Income and Expense
Interest income	0	0	0
Lower 48 Segment [Member] | Operating Segments [Member]
Capital Expenditures and Investments
Consolidated capital expenditures and investments	3,394	3,184	2,136
Interest Income and Expense
Interest income	0	0	0
Canada Segment [Member] | Operating Segments [Member]
Capital Expenditures and Investments
Consolidated capital expenditures and investments	368	477	202
Interest Income and Expense
Interest income	0	0	0
Europe and North Africa Segment [Member] | Operating Segments [Member]
Capital Expenditures and Investments
Consolidated capital expenditures and investments	708	877	872
Interest Income and Expense
Interest income	2	2	2
Asia Pacific and Middle East Segment [Member] | Operating Segments [Member]
Capital Expenditures and Investments
Consolidated capital expenditures and investments	584	718	482
Interest Income and Expense
Interest income	15	15	9
Other International Segment [Member] | Operating Segments [Member]
Capital Expenditures and Investments
Consolidated capital expenditures and investments	8	6	21
Interest Income and Expense
Interest income	$ 0	$ 0	$ 0

Segment Disclosures - Sales by

Segment Disclosures - Sales by Product (Details) - USD ($)		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue	[1]	$ 32,567,000,000	$ 36,417,000,000	$ 29,106,000,000
Natural Gas [Member]
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue		8,715,000,000	10,720,000,000	10,773,000,000
Natural Gas Liquids [Member]
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue		814,000,000	1,114,000,000	1,102,000,000
Crude Oil [Member]
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue		18,482,000,000	19,571,000,000	13,260,000,000
Other Products [Member]
Segment Reporting Information [Line Items]
Sales and Other Operating Revenue		$ 4,556,000,000	$ 5,012,000,000	$ 3,971,000,000
[1]	<div>(1)Sales and other operating revenues are attributable to countries based on the location of the selling operation.</div>

Segment Disclosures - Geographi

Segment Disclosures - Geographic Information (Details) - USD ($)		12 Months Ended
		Dec. 31, 2019		Dec. 31, 2018	Dec. 31, 2017
Geographic Information
Revenue from contracts with customers	[1]	$ 32,567,000,000		$ 36,417,000,000	$ 29,106,000,000
Long-Lived Assets	[2]	50,722,000,000		55,038,000,000	55,273,000,000
U.S.
Geographic Information
Revenue from contracts with customers	[1]	21,159,000,000		22,740,000,000	17,204,000,000
Long-Lived Assets	[2]	26,566,000,000	[3]	26,838,000,000	23,623,000,000
U.S. | Net Property Plant and Equipment
Geographic Information
Long-Lived Assets		426,000,000
Australia and Timor-Leste
Geographic Information
Revenue from contracts with customers	[1]	1,647,000,000		1,798,000,000	1,448,000,000
Long-Lived Assets	[2]	7,228,000,000	[4]	9,301,000,000	9,657,000,000
Australia and Timor-Leste | Net Property Plant and Equipment
Geographic Information
Long-Lived Assets		1,236,000,000
Canada [Member]
Geographic Information
Revenue from contracts with customers	[1]	1,769,000,000		2,024,000,000	2,619,000,000
Long-Lived Assets	[2]	5,769,000,000		5,333,000,000	5,613,000,000
CHINA
Geographic Information
Revenue from contracts with customers	[1]	772,000,000		836,000,000	712,000,000
Long-Lived Assets	[2]	1,447,000,000		1,380,000,000	1,275,000,000
INDONESIA
Geographic Information
Revenue from contracts with customers	[1]	875,000,000		886,000,000	757,000,000
Long-Lived Assets	[2]	605,000,000		669,000,000	758,000,000
Libya
Geographic Information
Revenue from contracts with customers	[1]	1,103,000,000		1,142,000,000	586,000,000
Long-Lived Assets	[2]	668,000,000		679,000,000	699,000,000
MALAYSIA
Geographic Information
Revenue from contracts with customers	[1]	1,230,000,000		1,346,000,000	1,103,000,000
Long-Lived Assets	[2]	1,871,000,000		2,327,000,000	2,736,000,000
NORWAY
Geographic Information
Revenue from contracts with customers	[1]	2,349,000,000		2,886,000,000	2,348,000,000
Long-Lived Assets	[2]	5,258,000,000		5,582,000,000	6,154,000,000
UNITED KINGDOM
Geographic Information
Revenue from contracts with customers	[1]	1,649,000,000		2,606,000,000	2,248,000,000
Long-Lived Assets	[2]	2,000,000		1,583,000,000	3,335,000,000
Segment Geographical Groups of Countries Other [Member]
Geographic Information
Revenue from contracts with customers	[1]	14,000,000		153,000,000	81,000,000
Long-Lived Assets	[2]	$ 1,308,000,000		$ 1,346,000,000	$ 1,423,000,000
[1]	<div>(1)Sales and other operating revenues are attributable to countries based on the location of the selling operation.</div>
[2]	<div>(2)Defined as net PP&E plus equity investments and advances to affiliated companies.</div>
[3]	<div>(3)Long-lived assets do not include $426 million of net PP&E associated with assets held for sale as of December 31, 2019. See Note 5—Acquisitions and Dispositions, for additional information.</div>
[4]	<div>(4)Long-lived assets do not include $1,236 million of net PP&E associated with assets held for sale as of December 31, 2019. See Note 5—Acquisitions and Dispositions, for additional information.</div>

Segment Disclosures - Textuals

Segment Disclosures - Textuals (Details Textual)	12 Months Ended
	Dec. 31, 2019
Segment Disclosures and Related Information (Textual) [Abstract]
Number of operating segments	6

New Accounting Standards (Detai

New Accounting Standards (Details) $ in Millions	Dec. 31, 2019USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Liability	$ 932

Supplementary Information - C_3

Supplementary Information - Condensed Consolidating Financial Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Repayment of Debt	$ 80	$ 4,995	$ 7,876
Proceeds from Collection of Long-term Loans to Related Parties	127	119	115
ConocoPhillips [Member]
Condensed Financial Statements, Captions [Line Items]
Proceeds from Contributions from Affiliates	2,400	3,500	7,800
Payments of Distributions to Affiliates	1,700	1,000	200
ConocoPhillips Company [Member]
Condensed Financial Statements, Captions [Line Items]
Proceeds from Collection of Long-term Loans to Related Parties	4,200	2,400	1.4
Proceeds from Contributions from Affiliates			$ 9.8
Payments of Distributions to Affiliates	4,500	$ 4,800
Burlington Resources LLC [Member] | ConocoPhillips [Member]
Condensed Financial Statements, Captions [Line Items]
Proceeds from Collection of Long-term Loans to Related Parties	$ 3,200

Supplementary Information - C_4

Supplementary Information - Condensed Consolidating Financial Information Income Statement (Details) - USD ($)		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018		Dec. 31, 2017
Revenues and Other Income
Revenue from contracts with customers	[1]	$ 32,567,000,000	$ 36,417,000,000		$ 29,106,000,000
Equity in earnings of affiliates		779,000,000	1,074,000,000		772,000,000
Gain on dispositions		1,966,000,000	1,063,000,000		2,177,000,000
Other income (loss)		1,358,000,000	173,000,000		529,000,000
Intercompany revenues		0	0		0
Total Revenues and Other Income		36,670,000,000	38,727,000,000		32,584,000,000
Cost and expenses [Abstract]
Purchased commodities		11,842,000,000	14,294,000,000		12,475,000,000
Production and operating expenses		5,322,000,000	5,213,000,000		5,162,000,000
Selling, general and administrative expenses		556,000,000	401,000,000	[2]	427,000,000	[2]
Exploration expenses		743,000,000	369,000,000	[2]	934,000,000	[2]
Depreciation, depletion and amortization		6,090,000,000	5,956,000,000		6,845,000,000
Impairments		405,000,000	27,000,000		6,601,000,000
Taxes other than income taxes		953,000,000	1,048,000,000		809,000,000
Accretion on discounted liabilities		326,000,000	353,000,000		362,000,000
Interest and debt expense		778,000,000	735,000,000		1,098,000,000
Foreign currency transaction (gains) losses		66,000,000	(17,000,000)		35,000,000
Other Non Operating Expense		65,000,000	375,000,000	[2]	451,000,000	[2]
Total Costs and Expenses		27,146,000,000	28,754,000,000		35,199,000,000
Income (loss) before income taxes		9,524,000,000	9,973,000,000		(2,615,000,000)
Income Tax Expense (Benefit)		2,267,000,000	3,668,000,000		(1,822,000,000)
Net income (loss)		7,257,000,000	6,305,000,000		(793,000,000)
Less: net income attributable to noncontrolling interests		(68,000,000)	(48,000,000)		(62,000,000)
Net income (loss) attributable to ConocoPhillips		7,189,000,000	6,257,000,000		(855,000,000)
Comprehensive Income (Loss) Attributable to ConocoPhillips		7,935,000,000	5,654,000,000		(180,000,000)
ConocoPhillips [Member]
Revenues and Other Income
Revenue from contracts with customers		0	0		0
Equity in earnings of affiliates		7,419,000,000	6,503,000,000		(454,000,000)
Gain on dispositions		0	0		0
Other income (loss)		1,000,000	0		2,000,000
Intercompany revenues		0	35,000,000		48,000,000
Total Revenues and Other Income		7,420,000,000	6,538,000,000		(404,000,000)
Cost and expenses [Abstract]
Purchased commodities		0	0		0
Production and operating expenses		1,000,000	0		0
Selling, general and administrative expenses		9,000,000	8,000,000		9,000,000
Exploration expenses		0	0		0
Depreciation, depletion and amortization		0	0		0
Impairments		0	0		0
Taxes other than income taxes		0	0		0
Accretion on discounted liabilities		0	0		0
Interest and debt expense		283,000,000	295,000,000		420,000,000
Foreign currency transaction (gains) losses		0	46,000,000		(43,000,000)
Other Non Operating Expense		0	0		267,000,000
Total Costs and Expenses		293,000,000	349,000,000		653,000,000
Income (loss) before income taxes		7,127,000,000	6,189,000,000		(1,057,000,000)
Income Tax Expense (Benefit)		(62,000,000)	(68,000,000)		(202,000,000)
Net income (loss)		7,189,000,000	6,257,000,000		(855,000,000)
Less: net income attributable to noncontrolling interests		0	0		0
Net income (loss) attributable to ConocoPhillips		7,189,000,000	6,257,000,000		(855,000,000)
Comprehensive Income (Loss) Attributable to ConocoPhillips		7,935,000,000	5,654,000,000		(180,000,000)
Reportable Legal Entities [Member] | ConocoPhillips Company [Member]
Revenues and Other Income
Revenue from contracts with customers		14,510,000,000	16,113,000,000		12,433,000,000
Equity in earnings of affiliates		5,281,000,000	8,142,000,000		2,047,000,000
Gain on dispositions		2,786,000,000	239,000,000		916,000,000
Other income (loss)		875,000,000	(384,000,000)		35,000,000
Intercompany revenues		113,000,000	162,000,000		291,000,000
Total Revenues and Other Income		23,565,000,000	24,272,000,000		15,722,000,000
Cost and expenses [Abstract]
Purchased commodities		12,838,000,000	14,591,000,000		11,145,000,000
Production and operating expenses		1,380,000,000	1,023,000,000		813,000,000
Selling, general and administrative expenses		421,000,000	289,000,000		342,000,000
Exploration expenses		422,000,000	170,000,000		542,000,000
Depreciation, depletion and amortization		596,000,000	584,000,000		855,000,000
Impairments		157,000,000	(10,000,000)		1,159,000,000
Taxes other than income taxes		139,000,000	143,000,000		140,000,000
Accretion on discounted liabilities		16,000,000	17,000,000		32,000,000
Interest and debt expense		544,000,000	613,000,000		664,000,000
Foreign currency transaction (gains) losses		21,000,000	(12,000,000)		11,000,000
Other Non Operating Expense		60,000,000	349,000,000		190,000,000
Total Costs and Expenses		16,594,000,000	17,757,000,000		15,893,000,000
Income (loss) before income taxes		6,971,000,000	6,515,000,000		(171,000,000)
Income Tax Expense (Benefit)		(448,000,000)	12,000,000		283,000,000
Net income (loss)		7,419,000,000	6,503,000,000		(454,000,000)
Less: net income attributable to noncontrolling interests		0	0		0
Net income (loss) attributable to ConocoPhillips		7,419,000,000	6,503,000,000		(454,000,000)
Comprehensive Income (Loss) Attributable to ConocoPhillips		8,165,000,000	5,900,000,000		221,000,000
Reportable Legal Entities [Member] | Burlington Resources LLC [Member]
Revenues and Other Income
Revenue from contracts with customers		0	0		0
Equity in earnings of affiliates		1,610,000,000	1,953,000,000		886,000,000
Gain on dispositions		0	0		0
Other income (loss)		5,000,000	0		0
Intercompany revenues		40,000,000	43,000,000		13,000,000
Total Revenues and Other Income		1,655,000,000	1,996,000,000		899,000,000
Cost and expenses [Abstract]
Purchased commodities		0	0		0
Production and operating expenses		1,000,000	4,000,000		0
Selling, general and administrative expenses		0	0		0
Exploration expenses		0	0		0
Depreciation, depletion and amortization		0	0		0
Impairments		0	0		0
Taxes other than income taxes		0	0		1,000,000
Accretion on discounted liabilities		0	0		0
Interest and debt expense		133,000,000	46,000,000		52,000,000
Foreign currency transaction (gains) losses		0	116,000,000		(137,000,000)
Other Non Operating Expense		0	6,000,000		0
Total Costs and Expenses		134,000,000	172,000,000		(84,000,000)
Income (loss) before income taxes		1,521,000,000	1,824,000,000		983,000,000
Income Tax Expense (Benefit)		(46,000,000)	(41,000,000)		(337,000,000)
Net income (loss)		1,567,000,000	1,865,000,000		1,320,000,000
Less: net income attributable to noncontrolling interests		0	0		0
Net income (loss) attributable to ConocoPhillips		1,567,000,000	1,865,000,000		1,320,000,000
Comprehensive Income (Loss) Attributable to ConocoPhillips		1,873,000,000	1,364,000,000		1,672,000,000
Reportable Legal Entities [Member] | All Other Subsidiaries [Member]
Revenues and Other Income
Revenue from contracts with customers		18,057,000,000	20,304,000,000		16,673,000,000
Equity in earnings of affiliates		775,000,000	1,072,000,000		770,000,000
Gain on dispositions		(820,000,000)	824,000,000		1,261,000,000
Other income (loss)		477,000,000	557,000,000		492,000,000
Intercompany revenues		5,542,000,000	5,627,000,000		3,369,000,000
Total Revenues and Other Income		24,031,000,000	28,384,000,000		22,565,000,000
Cost and expenses [Abstract]
Purchased commodities		4,038,000,000	5,131,000,000		4,580,000,000
Production and operating expenses		4,345,000,000	4,245,000,000		4,366,000,000
Selling, general and administrative expenses		131,000,000	109,000,000		82,000,000
Exploration expenses		321,000,000	199,000,000		392,000,000
Depreciation, depletion and amortization		5,494,000,000	5,372,000,000		5,990,000,000
Impairments		248,000,000	37,000,000		5,442,000,000
Taxes other than income taxes		814,000,000	905,000,000		668,000,000
Accretion on discounted liabilities		310,000,000	336,000,000		330,000,000
Interest and debt expense		69,000,000	156,000,000		410,000,000
Foreign currency transaction (gains) losses		45,000,000	(167,000,000)		204,000,000
Other Non Operating Expense		5,000,000	20,000,000		(6,000,000)
Total Costs and Expenses		15,820,000,000	16,343,000,000		22,458,000,000
Income (loss) before income taxes		8,211,000,000	12,041,000,000		107,000,000
Income Tax Expense (Benefit)		2,823,000,000	3,765,000,000		(1,566,000,000)
Net income (loss)		5,388,000,000	8,276,000,000		1,673,000,000
Less: net income attributable to noncontrolling interests		(68,000,000)	(48,000,000)		(62,000,000)
Net income (loss) attributable to ConocoPhillips		5,320,000,000	8,228,000,000		1,611,000,000
Comprehensive Income (Loss) Attributable to ConocoPhillips		6,058,000,000	7,961,000,000		2,275,000,000
Consolidating Adjustments [Member]
Revenues and Other Income
Revenue from contracts with customers		0	0		0
Equity in earnings of affiliates		(14,306,000,000)	(16,596,000,000)		(2,477,000,000)
Gain on dispositions		0	0		0
Other income (loss)		0	0		0
Intercompany revenues		(5,695,000,000)	(5,867,000,000)		(3,721,000,000)
Total Revenues and Other Income		(20,001,000,000)	(22,463,000,000)		(6,198,000,000)
Cost and expenses [Abstract]
Purchased commodities		(5,034,000,000)	(5,428,000,000)		(3,250,000,000)
Production and operating expenses		(405,000,000)	(59,000,000)		(17,000,000)
Selling, general and administrative expenses		(5,000,000)	(5,000,000)		(6,000,000)
Exploration expenses		0	0		0
Depreciation, depletion and amortization		0	0		0
Impairments		0	0		0
Taxes other than income taxes		0	0		0
Accretion on discounted liabilities		0	0		0
Interest and debt expense		(251,000,000)	(375,000,000)		(448,000,000)
Foreign currency transaction (gains) losses		0	0		0
Other Non Operating Expense		0	0		0
Total Costs and Expenses		(5,695,000,000)	(5,867,000,000)		(3,721,000,000)
Income (loss) before income taxes		(14,306,000,000)	(16,596,000,000)		(2,477,000,000)
Income Tax Expense (Benefit)		0	0		0
Net income (loss)		(14,306,000,000)	(16,596,000,000)		(2,477,000,000)
Less: net income attributable to noncontrolling interests		0	0		0
Net income (loss) attributable to ConocoPhillips		(14,306,000,000)	(16,596,000,000)		(2,477,000,000)
Comprehensive Income (Loss) Attributable to ConocoPhillips		$ (16,096,000,000)	$ (15,225,000,000)		$ (4,168,000,000)
[1]	<div>(1)Sales and other operating revenues are attributable to countries based on the location of the selling operation.</div>
[2]	See Notes to Consolidated Financial Statements.

Supplementary Information - C_5

Supplementary Information - Condensed Consolidating Financial Information Balance Sheet (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Assets
Cash and cash equivalents	$ 5,088,000,000	$ 5,915,000,000
Short-term investments	3,028,000,000	248,000,000
Accounts and notes receivable	3,401,000,000	4,067,000,000
Investment in Cenovus Energy	2,111,000,000	1,462,000,000
Inventories	1,026,000,000	1,007,000,000
Prepaid expenses and other current assets	2,259,000,000	575,000,000
Total Current Assets	16,913,000,000	13,274,000,000
Investments and long-term receivables	8,906,000,000	9,664,000,000
Net properties, plants and equipment (net of accumulated depreciation, depletion and amortization of $55,477 million in 2019 and $64,899 million in 2018)	42,269,000,000	45,698,000,000
Other assets	2,426,000,000	1,344,000,000
Total Assets	70,514,000,000	69,980,000,000	$ 73,362,000,000
Liabilities and Stockholders Equity
Accounts payable and related party accounts payable	3,200,000,000	3,895,000,000
Short-term debt	105,000,000	112,000,000
Accrued income and other taxes	1,030,000,000	1,320,000,000
Employee benefit obligations	663,000,000	809,000,000
Other accruals	2,045,000,000	1,259,000,000
Total Current Liabilities	7,043,000,000	7,395,000,000
Long-term debt	14,790,000,000	14,856,000,000
Long-term asset retirement obligations and accrued environmental costs	5,352,000,000	7,688,000,000
Long Term Deferred income taxes	4,634,000,000	5,021,000,000
Employee benefit obligations	1,781,000,000	1,764,000,000
Other liabilities and deferred credits	1,864,000,000	1,192,000,000
Total Liabilities	35,464,000,000	37,916,000,000
Retained earnings	39,742,000,000	34,010,000,000
Other common stockholders' equity	(4,761,000,000)	(2,071,000,000)
Noncontrolling interests	69,000,000	125,000,000
Total Liabilities and Equity	70,514,000,000	69,980,000,000
ConocoPhillips [Member]
Assets
Cash and cash equivalents	0	0
Short-term investments	0	0
Accounts and notes receivable	5,000,000	28,000,000
Investment in Cenovus Energy	0	0
Inventories	0	0
Prepaid expenses and other current assets	1,000,000	1,000,000
Total Current Assets	6,000,000	29,000,000
Investments and long-term receivables	34,076,000,000	29,942,000,000
Net properties, plants and equipment (net of accumulated depreciation, depletion and amortization of $55,477 million in 2019 and $64,899 million in 2018)	0	0
Other assets	3,000,000	4,000,000
Total Assets	34,085,000,000	29,975,000,000
Liabilities and Stockholders Equity
Accounts payable and related party accounts payable	0	0
Short-term debt	(3,000,000)	(3,000,000)
Accrued income and other taxes	0	0
Employee benefit obligations	0	0
Other accruals	84,000,000	85,000,000
Total Current Liabilities	81,000,000	82,000,000
Long-term debt	3,794,000,000	3,791,000,000
Long-term asset retirement obligations and accrued environmental costs	0	0
Long Term Deferred income taxes	0	0
Employee benefit obligations	0	0
Other liabilities and deferred credits	1,787,000,000	725,000,000
Total Liabilities	5,662,000,000	4,598,000,000
Retained earnings	33,184,000,000	27,512,000,000
Other common stockholders' equity	(4,761,000,000)	(2,135,000,000)
Noncontrolling interests	0	0
Total Liabilities and Equity	34,085,000,000	29,975,000,000
Reportable Legal Entities [Member] | ConocoPhillips Company [Member]
Assets
Cash and cash equivalents	3,439,000,000	1,428,000,000
Short-term investments	2,670,000,000	0
Accounts and notes receivable	2,088,000,000	5,646,000,000
Investment in Cenovus Energy	2,111,000,000	1,462,000,000
Inventories	168,000,000	184,000,000
Prepaid expenses and other current assets	352,000,000	267,000,000
Total Current Assets	10,828,000,000	8,987,000,000
Investments and long-term receivables	44,969,000,000	47,062,000,000
Net properties, plants and equipment (net of accumulated depreciation, depletion and amortization of $55,477 million in 2019 and $64,899 million in 2018)	3,552,000,000	4,367,000,000
Other assets	765,000,000	642,000,000
Total Assets	60,114,000,000	61,058,000,000
Liabilities and Stockholders Equity
Accounts payable and related party accounts payable	2,670,000,000	5,098,000,000
Short-term debt	4,000,000	12,000,000
Accrued income and other taxes	79,000,000	85,000,000
Employee benefit obligations	508,000,000	638,000,000
Other accruals	408,000,000	587,000,000
Total Current Liabilities	3,669,000,000	6,420,000,000
Long-term debt	6,670,000,000	7,151,000,000
Long-term asset retirement obligations and accrued environmental costs	322,000,000	415,000,000
Long Term Deferred income taxes	0	0
Employee benefit obligations	1,329,000,000	1,340,000,000
Other liabilities and deferred credits	7,514,000,000	9,277,000,000
Total Liabilities	19,504,000,000	24,603,000,000
Retained earnings	21,898,000,000	18,511,000,000
Other common stockholders' equity	18,712,000,000	17,944,000,000
Noncontrolling interests	0	0
Total Liabilities and Equity	60,114,000,000	61,058,000,000
Reportable Legal Entities [Member] | Burlington Resources LLC [Member]
Assets
Cash and cash equivalents	0	0
Short-term investments	0	0
Accounts and notes receivable	2,000,000	78,000,000
Investment in Cenovus Energy	0	0
Inventories	0	0
Prepaid expenses and other current assets	0	0
Total Current Assets	2,000,000	78,000,000
Investments and long-term receivables	11,662,000,000	15,199,000,000
Net properties, plants and equipment (net of accumulated depreciation, depletion and amortization of $55,477 million in 2019 and $64,899 million in 2018)	0	0
Other assets	253,000,000	227,000,000
Total Assets	11,917,000,000	15,504,000,000
Liabilities and Stockholders Equity
Accounts payable and related party accounts payable	21,000,000	76,000,000
Short-term debt	13,000,000	13,000,000
Accrued income and other taxes	0	0
Employee benefit obligations	0	0
Other accruals	35,000,000	35,000,000
Total Current Liabilities	69,000,000	124,000,000
Long-term debt	2,129,000,000	2,143,000,000
Long-term asset retirement obligations and accrued environmental costs	0	0
Long Term Deferred income taxes	0	0
Employee benefit obligations	0	0
Other liabilities and deferred credits	826,000,000	839,000,000
Total Liabilities	3,024,000,000	3,106,000,000
Retained earnings	2,164,000,000	1,113,000,000
Other common stockholders' equity	6,729,000,000	11,285,000,000
Noncontrolling interests	0	0
Total Liabilities and Equity	11,917,000,000	15,504,000,000
Reportable Legal Entities [Member] | All Other Subsidiaries [Member]
Assets
Cash and cash equivalents	1,649,000,000	4,487,000,000
Short-term investments	358,000,000	248,000,000
Accounts and notes receivable	3,881,000,000	6,707,000,000
Investment in Cenovus Energy	0	0
Inventories	858,000,000	823,000,000
Prepaid expenses and other current assets	1,906,000,000	307,000,000
Total Current Assets	8,652,000,000	12,572,000,000
Investments and long-term receivables	15,612,000,000	16,926,000,000
Net properties, plants and equipment (net of accumulated depreciation, depletion and amortization of $55,477 million in 2019 and $64,899 million in 2018)	38,717,000,000	41,796,000,000
Other assets	2,210,000,000	1,269,000,000
Total Assets	65,191,000,000	72,563,000,000
Liabilities and Stockholders Equity
Accounts payable and related party accounts payable	3,084,000,000	7,113,000,000
Short-term debt	91,000,000	99,000,000
Accrued income and other taxes	951,000,000	1,235,000,000
Employee benefit obligations	155,000,000	171,000,000
Other accruals	1,518,000,000	552,000,000
Total Current Liabilities	5,799,000,000	9,170,000,000
Long-term debt	2,197,000,000	2,249,000,000
Long-term asset retirement obligations and accrued environmental costs	5,030,000,000	7,273,000,000
Long Term Deferred income taxes	5,438,000,000	5,819,000,000
Employee benefit obligations	452,000,000	424,000,000
Other liabilities and deferred credits	9,271,000,000	8,126,000,000
Total Liabilities	28,187,000,000	33,061,000,000
Retained earnings	10,481,000,000	9,764,000,000
Other common stockholders' equity	26,454,000,000	29,613,000,000
Noncontrolling interests	69,000,000	125,000,000
Total Liabilities and Equity	65,191,000,000	72,563,000,000
Consolidating Adjustments [Member]
Assets
Cash and cash equivalents	0	0
Short-term investments	0	0
Accounts and notes receivable	(2,575,000,000)	(8,392,000,000)
Investment in Cenovus Energy	0	0
Inventories	0	0
Prepaid expenses and other current assets	0	0
Total Current Assets	(2,575,000,000)	(8,392,000,000)
Investments and long-term receivables	(97,413,000,000)	(99,465,000,000)
Net properties, plants and equipment (net of accumulated depreciation, depletion and amortization of $55,477 million in 2019 and $64,899 million in 2018)	0	(465,000,000)
Other assets	(805,000,000)	(798,000,000)
Total Assets	(100,793,000,000)	(109,120,000,000)
Liabilities and Stockholders Equity
Accounts payable and related party accounts payable	(2,575,000,000)	(8,392,000,000)
Short-term debt	0	(9,000,000)
Accrued income and other taxes	0	0
Employee benefit obligations	0	0
Other accruals	0	0
Total Current Liabilities	(2,575,000,000)	(8,401,000,000)
Long-term debt	0	(478,000,000)
Long-term asset retirement obligations and accrued environmental costs	0	0
Long Term Deferred income taxes	(804,000,000)	(798,000,000)
Employee benefit obligations	0	0
Other liabilities and deferred credits	(17,534,000,000)	(17,775,000,000)
Total Liabilities	(20,913,000,000)	(27,452,000,000)
Retained earnings	(27,985,000,000)	(22,890,000,000)
Other common stockholders' equity	(51,895,000,000)	(58,778,000,000)
Noncontrolling interests	0	0
Total Liabilities and Equity	$ (100,793,000,000)	$ (109,120,000,000)

Supplementary Information - C_6

Supplementary Information - Condensed Consolidating Financial Information Cash Flow (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Cash Flows From Operating Activities
Net Cash Provided by (Used in) Operating Activities		$ 11,104		$ 12,934		$ 7,077
Cash Flows From Investing Activities
Capital expenditures and investments		(6,636)		(6,750)		(4,591)
Increase (Decrease) In Capital Accrual Associated With Investing Activities		(103)		(68)		132
Proceeds from asset dispositions		3,012		1,082		13,860
Net Sales (Purchases) of Investments		(2,910)		1,620		(1,790)
Long-term advances/loans-related parties		0		0		0
Collection of advances/loans-related parties		127		119		115
Intercompany Cash Management		0		0		0
Other		(108)		154		36
Net Cash Provided by (Used in) Investing Activities		(6,618)		(3,843)		7,762
Cash Flows From Financing Activities
Issuance of debt		0		0		0
Repayment of debt		(80)		(4,995)		(7,876)
Issuance of company common stock		(30)		121		(63)
Repurchase of company common stock		(3,500)		(2,999)		(3,000)
Dividends paid		(1,500)		(1,363)		(1,305)
Other		(119)		(123)		(112)
Net Cash Provided by (Used in) Financing Activities		(5,229)		(9,359)		(12,356)
Effect of Exchange Rate Changes on Cash and Cash Equivalents and Restricted Cash		(46)		(117)		232
Net Change in Cash and Cash Equivalents and Restricted Cash		(789)		(385)		2,715
Cash and Cash Equivalents and Restricted Cash at beginning of period		6,151	[1]	6,325	[1]	3,610
Cash and Cash Equivalents and Restricted Cash at end of period	[1]	5,362		6,151		6,325
Restatement Adjustment [Member]
Cash Flows From Financing Activities
Cash and Cash Equivalents and Restricted Cash at beginning of period				6,536
Cash and Cash Equivalents and Restricted Cash at end of period						6,536
ConocoPhillips [Member]
Cash Flows From Operating Activities
Net Cash Provided by (Used in) Operating Activities		1,457		860		71
Cash Flows From Investing Activities
Capital expenditures and investments				0		0
Increase (Decrease) In Capital Accrual Associated With Investing Activities				0		0
Proceeds from asset dispositions		2,374		3,457		7,765
Net Sales (Purchases) of Investments		0		0		0
Long-term advances/loans-related parties		0		0		0
Collection of advances/loans-related parties		0		589		658
Intercompany Cash Management		1,060		(803)		1,151
Other		0		0		0
Net Cash Provided by (Used in) Investing Activities		3,434		3,243		9,574
Cash Flows From Financing Activities
Issuance of debt		0		0		0
Repayment of debt		0		0		(5,459)
Issuance of company common stock		105		254		115
Repurchase of company common stock		(3,500)		(2,999)		(3,000)
Dividends paid		(1,500)		(1,363)		(1,305)
Other		4		5		4
Net Cash Provided by (Used in) Financing Activities		(4,891)		(4,103)		(9,645)
Effect of Exchange Rate Changes on Cash and Cash Equivalents and Restricted Cash		0		0		0
Net Change in Cash and Cash Equivalents and Restricted Cash		0		0		0
Cash and Cash Equivalents and Restricted Cash at beginning of period		0		0		0
Cash and Cash Equivalents and Restricted Cash at end of period		0		0		0
ConocoPhillips [Member] | Restatement Adjustment [Member]
Cash Flows From Financing Activities
Cash and Cash Equivalents and Restricted Cash at beginning of period		0
Cash and Cash Equivalents and Restricted Cash at end of period				0
ConocoPhillips Company [Member]
Cash Flows From Investing Activities
Collection of advances/loans-related parties						200
Reportable Legal Entities [Member] | ConocoPhillips [Member]
Cash Flows From Investing Activities
Capital expenditures and investments		0
Increase (Decrease) In Capital Accrual Associated With Investing Activities		0
Reportable Legal Entities [Member] | ConocoPhillips Company [Member]
Cash Flows From Operating Activities
Net Cash Provided by (Used in) Operating Activities		7,986		4,019		1,183
Cash Flows From Investing Activities
Capital expenditures and investments		(2,517)		(980)		(1,663)
Increase (Decrease) In Capital Accrual Associated With Investing Activities		37		(110)		194
Proceeds from asset dispositions		7,047		666		11,146
Net Sales (Purchases) of Investments		(2,803)		0		0
Long-term advances/loans-related parties		(812)		(126)		(214)
Collection of advances/loans-related parties		141		3,432		1,527
Intercompany Cash Management		(2,849)		3,504		101
Other		(149)		151		(8)
Net Cash Provided by (Used in) Investing Activities		(1,905)		6,537		11,083
Cash Flows From Financing Activities
Issuance of debt		0		10		20
Repayment of debt		(21)		(4,865)		(4,411)
Issuance of company common stock		0		0		0
Repurchase of company common stock		0		0		0
Dividends paid		(4,034)		(1,043)		(235)
Other		0		(3,468)		(7,765)
Net Cash Provided by (Used in) Financing Activities		(4,055)		(9,366)		(12,391)
Effect of Exchange Rate Changes on Cash and Cash Equivalents and Restricted Cash		(11)		4		1
Net Change in Cash and Cash Equivalents and Restricted Cash		2,015		1,194		(124)
Cash and Cash Equivalents and Restricted Cash at beginning of period		1,428		234		358
Cash and Cash Equivalents and Restricted Cash at end of period		3,443		1,428		234
Reportable Legal Entities [Member] | ConocoPhillips Company [Member] | Restatement Adjustment [Member]
Cash Flows From Financing Activities
Cash and Cash Equivalents and Restricted Cash at beginning of period		1,428
Cash and Cash Equivalents and Restricted Cash at end of period				1,428
Reportable Legal Entities [Member] | Burlington Resources LLC [Member]
Cash Flows From Operating Activities
Net Cash Provided by (Used in) Operating Activities		3,207		838		2,971
Cash Flows From Investing Activities
Capital expenditures and investments		0		(603)		(4,351)
Increase (Decrease) In Capital Accrual Associated With Investing Activities		0		0		0
Proceeds from asset dispositions		769		1,926		12,178
Net Sales (Purchases) of Investments		0		0		0
Long-term advances/loans-related parties		0		(173)		(65)
Collection of advances/loans-related parties		0		212		389
Intercompany Cash Management		1,402		(2,150)		(1,341)
Other		0		0		0
Net Cash Provided by (Used in) Investing Activities		2,171		(788)		6,810
Cash Flows From Financing Activities
Issuance of debt		0		0		0
Repayment of debt		0		(53)		0
Issuance of company common stock		0		0		0
Repurchase of company common stock		0		0		0
Dividends paid		(454)		0		0
Other		(4,924)		0		(9,781)
Net Cash Provided by (Used in) Financing Activities		(5,378)		(53)		(9,781)
Effect of Exchange Rate Changes on Cash and Cash Equivalents and Restricted Cash		0		0		(2)
Net Change in Cash and Cash Equivalents and Restricted Cash		0		(3)		(2)
Cash and Cash Equivalents and Restricted Cash at beginning of period		0		3		5
Cash and Cash Equivalents and Restricted Cash at end of period		0		0		3
Reportable Legal Entities [Member] | Burlington Resources LLC [Member] | Restatement Adjustment [Member]
Cash Flows From Financing Activities
Cash and Cash Equivalents and Restricted Cash at beginning of period		0
Cash and Cash Equivalents and Restricted Cash at end of period				0
Reportable Legal Entities [Member] | All Other Subsidiaries [Member]
Cash Flows From Operating Activities
Net Cash Provided by (Used in) Operating Activities		9,803		14,132		5,904
Cash Flows From Investing Activities
Capital expenditures and investments		(5,714)		(5,777)		(3,795)
Increase (Decrease) In Capital Accrual Associated With Investing Activities		(140)		42		(62)
Proceeds from asset dispositions		1,055		705		12,796
Net Sales (Purchases) of Investments		(107)		1,620		(1,790)
Long-term advances/loans-related parties		0		(10)		(20)
Collection of advances/loans-related parties		147		129		2,196
Intercompany Cash Management		387		(551)		89
Other		41		3		44
Net Cash Provided by (Used in) Investing Activities		(4,331)		(3,839)		9,458
Cash Flows From Financing Activities
Issuance of debt		812		299		279
Repayment of debt		(220)		(4,320)		(2,661)
Issuance of company common stock		0		0		0
Repurchase of company common stock		0		0		0
Dividends paid		(7,097)		(6,057)		(2,995)
Other		(1,736)		(1,670)		(7,377)
Net Cash Provided by (Used in) Financing Activities		(8,241)		(11,748)		(12,754)
Effect of Exchange Rate Changes on Cash and Cash Equivalents and Restricted Cash		(35)		(121)		233
Net Change in Cash and Cash Equivalents and Restricted Cash		(2,804)		(1,576)		2,841
Cash and Cash Equivalents and Restricted Cash at beginning of period		4,723		6,088		3,247
Cash and Cash Equivalents and Restricted Cash at end of period		1,919		4,723		6,088
Reportable Legal Entities [Member] | All Other Subsidiaries [Member] | Restatement Adjustment [Member]
Cash Flows From Financing Activities
Cash and Cash Equivalents and Restricted Cash at beginning of period		4,723		6,299
Cash and Cash Equivalents and Restricted Cash at end of period				4,723		6,299
Consolidation, Eliminations [Member]
Cash Flows From Operating Activities
Net Cash Provided by (Used in) Operating Activities		(11,349)		(6,915)		(3,052)
Cash Flows From Investing Activities
Capital expenditures and investments		1,595		610		5,218
Increase (Decrease) In Capital Accrual Associated With Investing Activities		0		0		0
Proceeds from asset dispositions		(8,233)		(5,672)		(30,025)
Net Sales (Purchases) of Investments		0		0		0
Long-term advances/loans-related parties		812		309		299
Collection of advances/loans-related parties		(161)		(4,243)		(4,655)
Intercompany Cash Management		0		0		0
Other		0		0		0
Net Cash Provided by (Used in) Investing Activities		(5,987)		(8,996)		(29,163)
Cash Flows From Financing Activities
Issuance of debt		(812)		(309)		(299)
Repayment of debt		161		4,243		4,655
Issuance of company common stock		(135)		(133)		(178)
Repurchase of company common stock		0		0		0
Dividends paid		11,585		7,100		3,230
Other		6,537		5,010		24,807
Net Cash Provided by (Used in) Financing Activities		17,336		15,911		32,215
Effect of Exchange Rate Changes on Cash and Cash Equivalents and Restricted Cash		0		0		0
Net Change in Cash and Cash Equivalents and Restricted Cash		0		0		0
Cash and Cash Equivalents and Restricted Cash at beginning of period		0		0		0
Cash and Cash Equivalents and Restricted Cash at end of period		0		0		$ 0
Consolidation, Eliminations [Member] | Restatement Adjustment [Member]
Cash Flows From Financing Activities
Cash and Cash Equivalents and Restricted Cash at beginning of period		$ 0
Cash and Cash Equivalents and Restricted Cash at end of period				$ 0
[1]	See Notes to Consolidated Financial Statements.