Summarized Financial Data - Chevron Transport Corporation (Details 1) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Subsidiary Statements Captions [Line Items]
Current assets	$ 50,250	$ 55,720
Current liabilities	33,018	34,212
Total CTC net deficit	150,427	137,832	122,181
Chevron Transport Corporation [Member]
Subsidiary Statements Captions [Line Items]
Current assets	221	199
Other assets	549	313
Current liabilities	94	154
Other liabilities	911	415
Total CTC net deficit	$ (235)	$ (57)