Other Comprehensive Income and Accumulated Other Comprehensive Loss (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Accumulated other comprehensive loss    
Balance at the beginning of the period $ (60.2)  
Other comprehensive loss (33.8) 3.5
Balance at the end of the period (96.2)  
Foreign Currency Translation Adjustments    
Accumulated other comprehensive loss    
Balance at the beginning of the period (60.2) (29.3)
Other comprehensive loss (33.8) 3.5
Less Net other comprehensive income attributable to noncontrolling interest 2.2  
Balance at the end of the period $ (96.2) $ (25.8)