Stock-Based Compensation Plans Stock-Based Compensation Options & SARs (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Vesting Period	three
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period from Grant Date	ten
Fair Value of Grants in Period	$ 2.3	$ 1.0	$ 0.9
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 1.32	$ 0.00	$ 1.16
Share-based Compensation Arrangement by Share-based Payment Award, Performance Based Units Earned, Maximum	796,000
Stock Options and Stock Appreciation Rights [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 3.41	$ 0.00	$ 2.99
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	531,000	789,000	959,000
Fair Value of Grants in Period	$ 0.8	$ 0.9	$ 1.0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 1.32	$ 1.18	$ 1.13