Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Future minimum rentals for leases having initial or remaining noncancelable lease terms in excess of one year

As of December 31, 2016, our future minimum rentals for leases having initial or remaining noncancelable lease terms in excess of one year were as follows (in millions):

2017	$	479
2018	321
2019	221
2020	162
2021	106
Thereafter	362
Total minimum rental payments	$	1,651
Minimum rentals to be received under subleases	$	26

Rental expense for all operating leases

Rental expense was as follows (in millions):

	Year Ended December 31,
	2016			2015			2014
Minimum rental expense	$	739		$	732		$	618
Contingent rental expense	70			105			43
Total rental expense	809			837			661
Less sublease rental income	(31		)	(46		)	(28		)
Net rental expense	$	778		$	791		$	633