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Long-Term Debt (Term Loan A and Revolver) (Narrative) (Details) (USD $)
 2 Months Ended 3 Months Ended 9 Months Ended
Dec. 31, 2011
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Mar. 31, 2013
Nov. 09, 2011
Term Loan A [Member]
            
Debt Instrument [Line Items]            
Credit agreement, maximum capacity           $ 600,000,000
Term loan period, years 5 years          
Term loan repayment as percentage of principal in year 1 1.25%          
Term loan repayment as percentage of principal in year 2 1.25%          
Term loan repayment as percentage of principal in year 3 1.88%          
Term loan repayment as percentage of principal in year 4 1.88%          
Term loan repayment as percentage of principal in year 5 2.50%          
Interest expense   3,200,000 3,700,000 10,100,000 11,900,000  
Revolving Credit Facility [Member]
            
Debt Instrument [Line Items]            
Credit agreement, maximum capacity           $ 100,000,000
Revolver credit agreement term, years 5 years          
LIBOR [Member] | Term Loan A [Member]
            
Debt Instrument [Line Items]            
Interest addition to floating rate   2.25% 2.50% 2.25% 2.50%