Preferred Stock (Tables)

12 Months Ended

Dec. 31, 2011

Preferred Stock [Abstract]

Schedule Of Preferred Stock

	2011				2010				2009
	Shares(a)		Amount		Shares(a)		Amount		Shares(a)		Amount
Preferred stock		0.8	$	41		0.8	$	41		0.8	$	41
Repurchased preferred stock
Balance, beginning of year		0.6	$	150		0.6	$	145		0.5	$	138
Redemptions		—		7		—		5		0.1		7
Balance, end of year		0.6	$	157		0.6	$	150		0.6	$	145

^(a) In millions.