Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2015

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, 2015, our future minimum rentals for leases having initial or remaining noncancelable lease terms in excess of one year were as follows (in millions):

2016	$	430
2017	283
2018	200
2019	143
2020	100
Thereafter	311
Total minimum rental payments	$	1,467

Rental expense for all operating leases

Rental expense was as follows (in millions):

	Year Ended December 31,
	2015		2014		2013
Minimum rental expense	$	732	$	618	$	588
Contingent rental expense	105		43		47
Total rental expense	$	837	$	661	$	635