Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Future minimum rentals and minimum rentals to be received under subleases for leases having initial or remaining noncancelable lease terms in excess of one year

As of December 31, 2014, our future minimum rentals and minimum rentals to be received under subleases for leases having initial or remaining noncancelable lease terms in excess of one year were as follows (in millions):



2015	$	314
2016	229
2017	159
2018	131
2019	75
Thereafter	275
Total minimum rental payments	$	1,183
Minimum rentals to be received under subleases	$	14

Rental expense for all operating leases

Rental expense was as follows (in millions):



	Year Ended December 31,
	2014		2013		2012
Minimum rental expense	$	618	$	588	$	512
Contingent rental expense	43		47		67
Total rental expense	661		635		579
Less sublease rental income	—		—		(2		)
Net rental expense	$	661	$	635	$	577