Commitments and Contingencies (Details 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Leases, Capital
Assets acquired through capital leases	$ 10	$ 10	$ 3
Depreciation expense	5	19	32
Cash payments towards capital leases	6	20	$ 32
Assets included in property, plant and equipment	40	66
Accumulated depreciation	22	$ 55
Capital lease obligations:
2017	7
2018	7
2019	4
2020	1
2021	2
2022 and thereafter	5
Total minimum payments	26
Less: amount representing interest and executory costs	(7)
Present value of minimum payments	19
Less: current portion	(6)
Long-term portion	$ 13