Supplemental Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Cash Flow Information [Abstract]
Taxes paid, net of refunds	$ 129	$ 64	$ 94
Interest paid, net of amounts capitalized	166	189	226
Noncash Investing and Financing Activities
Capital lease obligations	28	7	38
Accrued capital expenditures	38	(22)	15
Asset retirement obligations	9	8	(2)
Accrued Kelsterbach capital expenditures	(2)	(14)	(33)
Accrued acquisition of intangibles	0	(2)	0
Lease incentives	3	6	3
Capital expenditure reimbursement	$ (70)	$ 0	$ 0