Costs Associated with Rationalization Programs (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Roll-forward liability
Beginning Balance	$ 184	$ 230	$ 145
New Charges	178	106	261
Incurred	(107)	(149)	(155)
Reversed to the Statement of Operations	(3)	(3)	(21)
Ending Balance	252	184	230
Associate Related Costs [Member]
Roll-forward liability
Beginning Balance	166	212	120
New Charges	142	60	237
Incurred	(77)	(104)	(129)
Reversed to the Statement of Operations	(2)	(2)	(16)
Ending Balance	229	166	212
Other Exit Costs And Noncancelable Lease Costs [Member]
Roll-forward liability
Beginning Balance	18	18	25
New Charges	36	46	24
Incurred	(30)	(45)	(26)
Reversed to the Statement of Operations	(1)	(1)	(5)
Ending Balance	$ 23	$ 18	$ 18