Company Transformation (Details) (USD $) In Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2011	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Components of transformation costs
Non-cash asset impairment		$ 9		$ 64
Advisory fees		32		75
IT Costs		36		58
Lease termination costs and other real estate costs		10		13
Loss on early extinguishment of debt	(325)	3		3
Employee retention and other compensation costs		23		36
Other costs		19		30
Transformation costs in operating income		132	0	279	0
Tax-related separation (benefit) cost		(4)		10
Total transformation costs before tax benefit		128		289
Income tax benefit		(35)		(87)
Total transformation costs, net of tax impact		$ 93		$ 202