Discontinued Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Liabilities and Expenses Related to the Aruba Refinery (Textual)
Asset retirement obligation charged to accretion expense			$ 63	$ 0
Aruba Refinery [Member]
Selected Results of Operations of the Aruba Refinery
Operating revenues	0	0	0	0
Income (loss) before income taxes	(63)	3	(64)	6
Liabilities and Expenses Related to the Aruba Refinery (Textual)
Asset retirement obligation recognized	59		59
Asset retirement obligation charged to accretion expense	59		59
Liabilities recognized for obligations under certain contracts	4		4
Total liabilities recorded	63		63
Liabilities classified as current liability	30		30
Liabilities classified as long-term liability	$ 33		$ 33
Required dismantlement period	3 years