Operating Segments and Geographic Data (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]
Net income attributable to Chevron Corporation	$ 21,423	$ 26,179	[1]	$ 26,895	[1]
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net income attributable to Chevron Corporation	23,046	28,087		28,377
Operating Segments [Member] | Upstream [Member]
Segment Reporting Information [Line Items]
Net income attributable to Chevron Corporation	20,809	23,788		24,786
Operating Segments [Member] | Upstream [Member] | United States [Member]
Segment Reporting Information [Line Items]
Net income attributable to Chevron Corporation	4,044	5,332		6,512
Operating Segments [Member] | Upstream [Member] | International [Member]
Segment Reporting Information [Line Items]
Net income attributable to Chevron Corporation	16,765	18,456		18,274
Operating Segments [Member] | Downstream [Member]
Segment Reporting Information [Line Items]
Net income attributable to Chevron Corporation	2,237	4,299		3,591
Operating Segments [Member] | Downstream [Member] | United States [Member]
Segment Reporting Information [Line Items]
Net income attributable to Chevron Corporation	787	2,048		1,506
Operating Segments [Member] | Downstream [Member] | International [Member]
Segment Reporting Information [Line Items]
Net income attributable to Chevron Corporation	1,450	2,251		2,085
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Interest Income	80	83		78
Other	$ (1,703)	$ (1,991)		$ (1,560)

[1] There was no effect of dividend equivalents paid on stock units or dilutive impact of employee stock-based awards on earnings.