Lease Commitments (Tables)

12 Months Ended

Dec. 31, 2015

Leases, Operating [Abstract]

Rental expenses for operating leases

Rental expenses (including amounts applicable to taxes, insurance and maintenance) for operating leases are as follows (in millions):

Years ended December 31	2015			2014			2013
Rental expense	$	454		$	455		$	520
Less: Sub lease rental income	(83		)	(75		)	(77		)
Net rental expense	$	371		$	380		$	443

Future minimum rental payments under operating leases for continuing operations that have initial or remaining noncancelable lease terms in excess of one year, net of sublease rental income

At December 31, 2015, future minimum rental payments required under operating leases that have initial or remaining non-cancelable lease terms in excess of one year, net of sublease rental income, are as follows (in millions):

2016	$	325
2017	291
2018	267
2019	235
2020	199
Thereafter	828
Total minimum payments required	$	2,145