Stock-Based Compensation Stock Options Activity (Details) (Amended and Restated 2004 Omnibus Stock Plan, Stock Options [Member], USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Amended and Restated 2004 Omnibus Stock Plan | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, begining balance (in shares)	0	155	341
Exercised (in shares)			(28)
Granted (in shares)	154
Cancelled, (in shares)	(10)	(50)	(13)
Expired, (in shares)		(105)	(145)
Outstanding, ending balance (in shares)	144	0	155
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding, Weighted-Average Exercise Price, Begining Balance (in dollars per share)	$ 0.00	$ 23.57	$ 23.50
Exercised, Weighted-Aberage Exercise Price (in dollars per share)			$ 15.26
Granted, Weighted-Aberage Exercise Price (in dollars per share)	$ 17.36
Canceled, Weighted-Aberage Exercise Price (in dollars per share)	$ 17.36	$ 16.05	$ 27.38
Expired, Weighted-Aberage Exercise Price (in dollars per share)		$ 27.15	$ 24.69
Outstanding, Weighted-Average Exercise Price, Ending Balance (in dollars per share)	$ 17.36	$ 0.00	$ 23.57
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Oustanding at December 31, 2012, Weighted-Average Remaining Contractual Life (In Years)	6 years 9 months 18 days
Oustanding at December 31, 2012, Aggregate Intrinsic Value	$ 0