Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015		Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net Income	$ 608	$ 5,690	$ 3,208		$ 10,211
Currency translation adjustment	6	8	(19)		(30)
Unrealized holding (loss) gain on securities:
Net (loss) gain arising during period	(8)	4	(6)		8
Derivatives:
Net derivatives loss on hedge transactions	0	(63)	0		(66)
Reclassification to net income of net realized gain	0	(16)	0		(17)
Income tax benefit on derivatives transactions	0	28	0		29
Total	0	(51)	0		(54)
Actuarial loss:
Amortization to net income of net actuarial and settlement losses	174	114	344		225
Actuarial gain arising during period	8	0	0		0
Prior service cost:
Amortization to net income of net prior service costs	8	7	14		13
Defined benefit plans sponsored by equity affiliates	14	6	27		12
Income tax expense on defined benefit plans	(73)	(51)	(152)		(92)
Total	131	76	233		158
Other Comprehensive Gain, Net of Tax	129	37	208	[1]	82
Comprehensive Income	737	5,727	3,416		10,293
Comprehensive income attributable to noncontrolling interests	(37)	(25)	(70)		(34)
Comprehensive Income Attributable to Chevron Corporation	$ 700	$ 5,702	$ 3,346		$ 10,259

[1] All amounts are net of tax.