Other Long-Term Assets, Net - Schedule of Other Long-term Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Long-Term Assets, Net
Intangible assets	$ 603	$ 610
Fair value of derivative instruments	1	9
Other	43	91
Other long-term assets, gross	647	710
Accumulated amortization	(361)	(327)
Other long-term assets, net	286	383
Amortization expense for finite-lived intangible assets	$ 44	$ 49	$ 57