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Organization and Basis of Presentation Goodwill Rollforward (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Goodwill [Line Items]    
Beginning Goodwill $ 155.9 $ 155.8
Goodwill, Translation and Purchase Accounting Adjustments 0.5 0.1
Ending Goodwill $ 156.4 $ 155.9