Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies

Schedule of capital leased assets

At December 31, 2016 and 2015, the aggregate carrying amount of this asset held under capital leasewas as follows (in millions):

	December 31,
		2016	2015
Property and equipment, cost	$	776	$	774
Accumulated depreciation		(149)		(125)
Property and equipment, net	$	627	$	649

Schedule of aggregate future minimum rental payments related to noncancellable operating leases and the capital leases

	December 31,
		2016	2015
Property and equipment, cost	$	776	$	774
Accumulated depreciation		(149)		(125)
Property and equipment, net	$	627	$	649

At December 31, 2016, the aggregate future minimum rental payments related to our non-cancellable operating leases and the capital lease were as follows (in millions):

	Capital		Operating
	lease		leases
Years ending December 31,
2017	$	66	$	10
2018		72		11
2019		72		10
2020		72		9
2021		71		9
Thereafter		550		42
Total future minimum rental payment		903	$	91
Less amount representing imputed interest		(337)
Present value of future minimum rental payments under capital leases		566
Less current portion included in debt due within one year		(25)
Long-term capital lease obligation	$	541

Schedule of aggregate future payments required under purchase obligations

			Service
	Purchase		agreement
	obligations		obligations
Years ending December 31,
2017	$	229	$	27
2018		9		47
2019		—		50
2020		1,766		52
Thereafter		—		366
Total	$	2,004	$	542