Noncontrolling Interests (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Activity for equity attributable to noncontrolling interests
Balance at beginning of period			$ 137,832		$ 122,181
Net income	4,996	5,308	16,639		19,039
Dividends			(5,573)		(5,102)
Distributions to noncontrolling interests			(93)		(23)
Treasury shares, net			(3,214)		(3,017)
Other changes, net			482	[1]	1,144	[1]
Balance at end of period	146,073	134,222	146,073		134,222
Chevron Corporation Stockholders' Equity [Member]
Activity for equity attributable to noncontrolling interests
Balance at beginning of period			136,524		121,382
Net income			16,493		18,934
Dividends			(5,573)		(5,102)
Distributions to noncontrolling interests			0		0
Treasury shares, net			(3,214)		(3,017)
Other changes, net			549	[1]	744	[1]
Balance at end of period	144,779	132,941	144,779		132,941
Noncontrolling Interest [Member]
Activity for equity attributable to noncontrolling interests
Balance at beginning of period			1,308		799
Net income			146		105
Dividends			0		0
Distributions to noncontrolling interests			(93)		(23)
Treasury shares, net			0		0
Other changes, net			(67)	[1]	400	[1]
Balance at end of period	$ 1,294	$ 1,281	$ 1,294		$ 1,281

[1] Includes components of comprehensive income, which are disclosed separately in the Consolidated Statement of Comprehensive Income.