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Fair Value Measurements (Carrying Amounts And Estimated Fair Values Of Financial Instruments) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2012
Jun. 30, 2011
Fair Value Measurements [Abstract]    
Long-term debt, including current portion, Carrying Value $ 407.2 $ 507.8
Long-term debt, including current portion, Fair Value 418.2 515.9
Company-owned life insurance, Carrying Value 11.8 11.4
Company-owned life insurance, Fair Value $ 11.8 $ 11.4