Consolidated Statement of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net Income	$ 5,308	$ 7,857	$ 19,039	$ 21,856
Currency translation adjustment	10	(58)	12	(7)
Unrealized holding gain (loss) on securities:
Net gain (loss) arising during period	8	1	7	(10)
Derivatives:
Net derivatives gain (loss) on hedge transactions	23	(4)	26	(4)
Reclassification to net income of net realized gain	(6)	(2)	(4)	(5)
Income taxes on derivatives transactions	(5)	2	(7)	3
Total	12	(4)	15	(6)
Actuarial loss:
Amortization to net income of net actuarial loss	227	169	733	555
Actuarial gain (loss) arising during period	10	16	(33)	71
Prior service cost:
Amortization to net income of net prior service credits	(15)	(17)	(45)	(9)
Defined benefit plans sponsored by equity affiliates	9	9	27	31
Income taxes on defined benefit plans	(87)	(65)	(252)	(225)
Total	144	112	430	423
Other Comprehensive Gain, Net of Tax	174	51	464	400
Comprehensive Income	5,482	7,908	19,503	22,256
Comprehensive income attributable to noncontrolling interests	(55)	(28)	(105)	(84)
Comprehensive Income Attributable to Chevron Corporation	$ 5,427	$ 7,880	$ 19,398	$ 22,172