Summarized Financial Data - Chevron Transport Corporation (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Summarized Financial Data - Chevron Transport Corporation
Sales and other operating revenues	$ 230,590	[1]	$ 244,371	[1]	$ 198,198	[1]
Total costs and other deductions	195,577		206,072		172,873
Net income	26,179	[2]	26,895	[2]	19,024	[2]
Chevron Transport Corporation [Member]
Summarized Financial Data - Chevron Transport Corporation
Sales and other operating revenues	606		793		885
Total costs and other deductions	745		974		1,008
Net income	$ (135)		$ (177)		$ (116)

[1] *Includes excise, value-added and similar taxes.$8,010 $8,085 $8,591See accompanying Notes to the Consolidated Financial Statements.

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