Stockholders' Equity (Details Of Dividends Declared) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011
Stockholders' Equity [Abstract]
Record Date	Dec. 30, 2011	Sep. 30, 2011	Jun. 30, 2011
Payment Date	Jan. 31, 2012	Oct. 28, 2011	Jul. 28, 2011
Amount per Share	$ 0.25	$ 0.25	$ 0.25
Total Amount	$ 41	$ 41	$ 41