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Debt and Credit Arrangements Annual Maturities (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Maturities of Long-term Debt [Abstract]    
2013 $ 353.6 [1]  
2014 2.2  
2015 2.3  
2016 301.7  
2017 24.8  
Thereafter 798.8  
Total long-term debt $ 1,483.4 $ 2,277.4
[1] The interest coverage ratio is defined as EBITDA, as defined in the Credit Agreement, to net interest expense plus cash dividends on convertible preferred stock for the four quarters then ended.