Noncontrolling Interests (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Activity for equity attributable to noncontrolling interests
Balance at beginning of period				$ 156,191	$ 150,427
Net income		$ 608	$ 5,690	3,208	10,211
Dividends				(3,996)	(3,916)
Distributions to noncontrolling interests				(26)	(2)
Treasury shares, net				158	(2,053)
Other changes, net	[1]			356	80
Balance at end of period		155,891	154,747	155,891	154,747
Chevron Corporation Stockholders' Equity [Member]
Activity for equity attributable to noncontrolling interests
Balance at beginning of period				155,028	149,113
Net income				3,138	10,177
Dividends				(3,996)	(3,916)
Distributions to noncontrolling interests				0	0
Treasury shares, net				158	(2,053)
Other changes, net	[1]			341	260
Balance at end of period		154,669	153,581	154,669	153,581
Noncontrolling Interest [Member]
Activity for equity attributable to noncontrolling interests
Balance at beginning of period				1,163	1,314
Net income				70	34
Dividends				0	0
Distributions to noncontrolling interests				(26)	(2)
Treasury shares, net				0	0
Other changes, net	[1]			15	(180)
Balance at end of period		$ 1,222	$ 1,166	$ 1,222	$ 1,166

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