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Debt (Details 2) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Future maturities of debt    
2014 $ 15.7  
2015 10.2  
2016 4.2  
2017 4.5  
2018 705.0  
Thereafter 6,360.3  
Total long term debt maturities $ 7,099.9 $ 7,150.2