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Consolidated Statement of Comprehensive Income - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Consolidated Statement of Comprehensive Income [Abstract]
Net income (loss)		$ 1,597	$ 1,654	$ 3,443	$ 2,554
Defined benefit plans
Reclassification adjustment for amortization of prior service cost (credit) included in net income		(10)	(10)	(18)	(20)
Net actuarial gain (loss) arising during the period		0	(42)	0	(42)
Reclassification adjustment for amortization of net actuarial losses included in net income		32	171	58	195
Other Comprehensive Income Loss Non Sponsored Plan		0	(1)	0	(1)
Income taxes on defined benefit plans		(5)	(25)	(10)	(28)
Defined benefit plans, net of tax		17	93	30	104
Foreign currency translation adjustments		71	(359)	246	(281)
Income taxes on foreign currency translation		(1)	0	0	0
Foreign currency translation adjustments, net of tax		70	(359)	246	(281)
Other Comprehensive Income (Loss), Net of Tax		87	(266)	276	(177)
Comprehensive Income (Loss)		1,684	1,388	3,719	2,377
Less: comprehensive income attributable to noncontrolling interests		(17)	(14)	(30)	(26)
Comprehensive Income (Loss) Attributable to ConocoPhillips	[1]	$ 1,667	$ 1,374	$ 3,689	$ 2,351
[1] See Notes to Consolidated Financial Statements.

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