Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Future Minimum Lease Payments Under Noncancelable Operating Leases

At December 31, 2011, future minimum payments under non-cancelable operating leases, net of sublease income amounts, were as follows over each of the next five years and thereafter (in millions):

	Operating Leases		Sub-lease Income		Net Operating Leases
2012	$	389	$	17	$	372
2013		377		16		361
2014		357		14		343
2015		311		13		298
2016		256		10		246
Thereafter		1,264		5		1,259
Total minimum payments	$	2,954	$	75	$	2,879