Noncontrolling Interests (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Activity for equity attributable to noncontrolling interests
Balance at beginning of period				$ 156,191	$ 150,427
Net income		$ 2,057	$ 5,627	5,265	15,838
Dividends				(5,995)	(5,929)
Distributions to noncontrolling interests				(122)	(18)
Treasury shares, net				181	(3,210)
Other changes, net	[1]			418	199
Balance at end of period		155,938	157,307	155,938	157,307
Chevron Corporation Stockholders' Equity [Member]
Activity for equity attributable to noncontrolling interests
Balance at beginning of period				155,028	149,113
Net income				5,175	15,770
Dividends				(5,995)	(5,929)
Distributions to noncontrolling interests				0	0
Treasury shares, net				181	(3,210)
Other changes, net	[1]			523	396
Balance at end of period		154,912	156,140	154,912	156,140
Noncontrolling Interest [Member]
Activity for equity attributable to noncontrolling interests
Balance at beginning of period				1,163	1,314
Net income				90	68
Dividends				0	0
Distributions to noncontrolling interests				(122)	(18)
Treasury shares, net				0	0
Other changes, net	[1]			(105)	(197)
Balance at end of period		$ 1,026	$ 1,167	$ 1,026	$ 1,167

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