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Debt (Analysis Of Borrowings By Maturity) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Debt    
2012 $ 586.5  
Long-term Debt, Maturities, Repayments of Principal after Year Five 599.5  
Total debt $ 1,186.0 $ 1,284.7