CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 3,581	$ 2,642
Currency translation adjustment	(19)	(4)
Unrealized holding gain (loss) on securities
Net gain (loss) arising during period	(3)	(1)
Actuarial gain (loss)
Amortization to net income of net actuarial loss and settlements	166	125
Actuarial gain (loss) arising during period	0	(3)
Prior service credits (cost)
Amortization to net income of net prior service costs and curtailments	(3)	(4)
Prior service (costs) credits arising during period	0	0
Defined benefit plans sponsored by equity affiliates - benefit (cost)	2	2
Income (taxes) benefit on defined benefit plans	(37)	(30)
Total	128	90
Other Comprehensive Gain (Loss), Net of Tax	106	85
Comprehensive Income	3,687	2,727
Comprehensive loss (income) attributable to noncontrolling interests	18	7
Comprehensive Income (Loss) Attributable to Chevron Corporation	$ 3,705	$ 2,734