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Consolidated Statements of Changes in Total Equity Consolidated Statements of Changes in Total Equity (Parenthetical) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Retained earnings $ 892.2 [1] $ 888.2 [1]    
Accumulated other comprehensive loss (104.6) [1] (97.4) [1]    
Comprehensive income loss 4.6 [1] (60.5) [1] 73.4 [1]  
Effect of Restatement 1 [Member]
       
Retained earnings       20.4
Accumulated other comprehensive loss       8.0
Comprehensive income loss   (12.2) (9.6)  
Effect of Restatement 2 [Member]
       
Retained earnings       8.2
Comprehensive income loss $ 1.3 $ (8.9) $ (6.4)  
[1] See Note 23 - Restatement of Consolidated Financial Statements