Summarized Financial Data - Chevron Transport Corporation (Details 1) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Balance Sheet - Chevron Transport Corporation
Current assets	$ 47,083	$ 50,250
Current liabilities	37,088	33,018
Total Equity	157,307	150,427	146,073	137,832
Chevron Transport Corporation [Member]
Balance Sheet - Chevron Transport Corporation
Current assets	242	221
Other assets	852	549
Current liabilities	76	94
Other liabilities	1,335	911
Total Equity	$ (317)	$ (235)

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