CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 2,699	$ (707)
Currency translation adjustment	14	9
Unrealized holding gain on securities:
Net gain (loss) arising during period	(5)	9
Actuarial gain (loss):
Amortization to net income of net actuarial and settlement losses	171	181
Actuarial loss arising during period	(14)	0
Prior service cost:
Amortization to net income of net prior service costs	(5)	5
Defined benefit plans sponsored by equity affiliates	6	9
Income tax expense on defined benefit plans	(50)	(72)
Total	108	123
Other Comprehensive Gain, Net of Tax	117	141
Comprehensive Income (Loss)	2,816	(566)
Comprehensive income attributable to noncontrolling interests	(17)	(18)
Comprehensive Income (Loss) Attributable to Chevron Corporation	$ 2,799	$ (584)