Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Supplemental Cash Flow Information [Abstract]
Interest paid, net of amounts capitalized	$ 120	$ 146	$ 166
Taxes paid, net of refunds	151	199	129
Noncash Investing and Financing Activities
Accrued capital expenditures	(37)	3	38
Accrued Kelsterbach capital expenditures (Note 4)	0	0	(2)
Asset retirement obligations	3	4	9
Capital expenditure reimbursement	0	4	0
Capital lease obligations	6	22	28
Contingent consideration (Note 4)	0	8	0
Distribution to noncontrolling interest (Note 5)	(4)	0	0
Lease incentives	0	0	3
Mitsui reimbursement	$ 0	$ 70	$ (70)