Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ (431)	$ 4,710	$ 19,310
Currency translation adjustment
Unrealized net change arising during period	(22)	(44)	(73)
Unrealized holding gain (loss) on securities
Net gain (loss) arising during period	27	(21)	(2)
Derivatives
Net derivatives loss on hedge transactions	0	0	(66)
Reclassification to net income of net realized (gain) loss	0	0	(17)
Income taxes on derivatives transactions	0	0	29
Total	0	0	(54)
Actuarial gain (loss)
Amortization to net income of net actuarial loss and settlements	918	794	757
Actuarial gain (loss) arising during period	(315)	109	(2,730)
Prior service credits (cost)
Amortization to net income of net prior service costs and curtailments	19	30	26
Prior service credits (costs) arising during period	345	6	(6)
Defined benefit plans sponsored by equity affiliates - (cost) benefit	(19)	30	(99)
Income taxes on defined benefit plans	(505)	(336)	901
Total	443	633	(1,151)
Other Comprehensive Gain (Loss), Net of Tax	448	568	(1,280)
Comprehensive Income (Loss)	17	5,278	18,030
Comprehensive income attributable to noncontrolling interests	(66)	(123)	(69)
Comprehensive Income (Loss) Attributable to Chevron Corporation	$ (49)	$ 5,155	$ 17,961