Summarized Financial Data - Chevron Transport Corporation (Details 1) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Balance Sheet - Chevron Transport Corporation
Current assets	$ 53,234	$ 48,841
Current liabilities	33,600	29,012
Total Equity	122,181	105,811	92,561
Chevron Transport Corporation [Member]
Balance Sheet - Chevron Transport Corporation
Current assets	290	309
Other assets	228	201
Current liabilities	114	101
Other liabilities	346	175
Total Equity	$ 58	$ 234

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