Commitments and Contingencies (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Rental expense, net of sublease income	$ 84,000,000	$ 42,000,000	$ 62,000,000
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2017	62,000,000
2018	58,000,000
2019	52,000,000
2020	49,000,000
2021	42,000,000
Beyond	218,000,000
Purchase Obligation, Fiscal Year Maturity [Abstract]
Total payments expected under purchase arrangements	169,000,000
Total payments expected in 2017	125,000,000
Total payments expected in 2018	30,000,000
Total payments expected in 2019	9,000,000
Total payments expected in 2020	4,000,000
Total payments expected in 2021	1,000,000
Remaining contract payments	237,000,000
Accrued portion of the amount of indemnification under agreements	$ 0