Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net Income	$ 4,710	$ 19,310	$ 21,597
Currency translation adjustment
Unrealized net change arising during period	(44)	(73)	42
Unrealized holding loss on securities
Net loss arising during period	(21)	(2)	(7)
Derivatives
Net derivatives loss on hedge transactions	0	(66)	(111)
Reclassification to net income of net realized (gain) loss	0	(17)	(1)
Income taxes on derivatives transactions	0	29	39
Total	0	(54)	(73)
Actuarial gain (loss)
Amortization to net income of net actuarial loss and settlements	794	757	866
Actuarial gain (loss) arising during period	109	(2,730)	3,379
Prior service credits (cost)
Amortization to net income of net prior service costs (credits) and curtailments	30	26	(27)
Prior service credits (costs) arising during period	6	(6)	60
Defined benefit plans sponsored by equity affiliates	30	(99)	164
Income taxes on defined benefit plans	(336)	901	(1,614)
Total	633	(1,151)	2,828
Other Comprehensive Gain (Loss), Net of Tax	568	(1,280)	2,790
Comprehensive Income	5,278	18,030	24,387
Comprehensive income attributable to noncontrolling interests	(123)	(69)	(174)
Comprehensive Income Attributable to Chevron Corporation	$ 5,155	$ 17,961	$ 24,213