ShareBased Compensation Plans Options (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 Y	Dec. 31, 2010	Dec. 31, 2009
Shares [Abstract]
Options Outstanding at December 31, 2010	5,129
Options Granted	684
Options Exercised	(221)
Options Canceled	(991)
Options Outstanding at December 31, 2011	4,601
Options Vested and Expected to Vest, Outstanding	4,580
Options Exercisable Shares December 31, 2011	3,060
Weighted Average Exercise Price [Abstract]
Options Outstanding December 31, 2010	$ 21.27
Options Granted	$ 16.32
Options Exercised	$ 15.32
Options Canceled	$ 21.45
Options Outstanding December 31, 2011	$ 20.78
Options Vested and Expected to Vest, Weighted Average Exercise Price	$ 20.80
Options Exercisable at December 31, 2011	$ 22.35
Unrecognized Compensation Cost [Abstract]
Stock Options As Incentive Compensation For Key Employees Vesting Percentage Per Year	33.00%
Stock Options [Member]
Weighted Average Remaining Contractual Term [Abstract]
Options Outstanding, Weighted Average Remaining Contractual Term (in years)	2.4
Options, Vested and Expected to Vest, Weighted Average Remaining Contractual Term (in years)	4.8
Option Exercisable, Weighted Average Remaining Contractual Term (in years)	2.8
Intrinsic Value [Abstract]
Options Outstanding, Intrinsic Value	$ 484,000
Options, Vested and Expected to Vest, Aggregate Intrinsic Value	248,000
Options Exercisable, Intrinsic Value	49,000
Unrecognized Compensation Cost [Abstract]
Unrecognized Compensation Costs Related To Restricted Stock Units	6,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value	$ 500,000	$ 6,100,000	$ 4,900,000