Consolidated Statement of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
Net Income	$ 4,521		$ 6,239
Currency translation adjustment	(38)		(11)
Unrealized holding gain (loss) on securities:
Net gain (loss) arising during period	4		(1)
Derivatives:
Net derivatives loss on hedge transactions	(3)		0
Reclassification to net income of net realized gain	(1)		(5)
Income tax benefit on derivatives transactions	1		2
Total	(3)		(3)
Actuarial loss:
Amortization to net income of net actuarial and settlement losses	111		227
Prior service cost:
Amortization to net income of net prior service costs (credits)	6		(7)
Defined benefit plans sponsored by equity affiliates	6		(20)
Income tax expense on defined benefit plans	(41)		(85)
Total	82		115
Other Comprehensive Gain, Net of Tax	45	[1]	100
Comprehensive Income	4,566		6,339
Comprehensive income attributable to noncontrolling interests	(9)		(61)
Comprehensive Income Attributable to Chevron Corporation	$ 4,557		$ 6,278

[1] All amounts are net of tax.