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Long-Term Debt (Term Loan And Revolver) (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended 2 Months Ended 3 Months Ended 6 Months Ended 2 Months Ended
Dec. 31, 2011
Old Term Loan [Member]
Dec. 31, 2011
Old Term Loan [Member]
Dec. 31, 2011
Term Loan [Member]
Dec. 31, 2012
Term Loan [Member]
Dec. 31, 2012
Term Loan [Member]
Dec. 31, 2011
Term Loan [Member]
Nov. 09, 2011
Term Loan [Member]
Dec. 31, 2011
Revolving Credit Facility [Member]
Nov. 09, 2011
Revolving Credit Facility [Member]
Nov. 09, 2011
LIBOR [Member]
Term Loan [Member]
Debt Instrument [Line Items]                    
Credit agreement, maximum capacity             $ 600   $ 100  
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 addition to floating rate                   2.50%
Interest expense $ 0.9 $ 2.7   $ 4.1 $ 8.2 $ 2.5        
Revolver credit agreement term, years               5 years