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Fair Value Measurement (Fair Value of Financial Instrument) (Details) (USD $)
Jun. 30, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Long-term Debt $ 1,693,800,000
Carrying Value [Member]
 
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Long-term Debt 1,675,300,000
Short-term Debt 18,500,000
Obligations under capital lease 22,000,000
Fair Value [Member]
 
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Long-term Debt, Fair Value 1,754,800,000
Short-term Debt, Fair Value 20,000,000
Obligations under capital lease $ 21,800,000