Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015		Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net Income	$ 2,057	$ 5,627	$ 5,265		$ 15,838
Currency translation adjustment	(16)	(19)	(35)		(49)
Unrealized holding (loss) gain on securities:
Net (loss) gain arising during period	(18)	(4)	(24)		4
Derivatives:
Net derivatives loss on hedge transactions	0	0	0		(66)
Reclassification to net income of net realized gain	0	0	0		(17)
Income tax benefit on derivatives transactions	0	0	0		29
Total	0	0	0		(54)
Actuarial loss:
Amortization to net income of net actuarial and settlement losses	204	125	548		350
Prior service cost:
Amortization to net income of net prior service costs	5	6	19		19
Defined benefit plans sponsored by equity affiliates	7	6	34		18
Income tax expense on defined benefit plans	(80)	(55)	(232)		(147)
Total	136	82	369		240
Other Comprehensive Gain, Net of Tax	102	59	310	[1]	141
Comprehensive Income	2,159	5,686	5,575		15,979
Comprehensive income attributable to noncontrolling interests	(20)	(34)	(90)		(68)
Comprehensive Income Attributable to Chevron Corporation	$ 2,139	$ 5,652	$ 5,485		$ 15,911

[1] All amounts are net of tax.