Lease Commitments

12 Months Ended

Dec. 31, 2015

The Company leases office facilities, equipment, and automobiles under non-cancelable operating leases. These leases expire at various dates and may contain renewal and expansion options. In addition to base rental costs, occupancy lease agreements generally provide for rent escalations resulting from increased assessments for real estate taxes and other charges. The Company's lease obligations are primarily for the use of office space.

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

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