Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2011

Stockholders' Equity [Abstract]

Schedule Of Dividends Declared And Paid

Record Date	Payment Date		Amount per Share		Total Amount
					(in millions)
6/30/2011		7/28/2011	$	0.25	$	41
9/30/2011		10/28/2011	$	0.25	$	41
12/30/2011		1/31/2012	$	0.25	$	41