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Derivative Instruments (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jun. 30, 2014
Rate
Jun. 30, 2013
Jun. 30, 2014
Interest Rate Swap [Member]
Apr. 30, 2011
Interest Rate Swap [Member]
Derivatives
Jun. 30, 2014
Swap, Interest Rate Swaps, Maturity Fiscal 2015 [Member]
Interest Rate Swap [Member]
Derivatives
Jun. 30, 2014
Swap, Interest Rate Swaps, Maturity Fiscal 2013 [Member]
Interest Rate Swap [Member]
Derivative [Line Items]            
debt instrument premium 107.50%          
Number of Interest Rate Derivatives Held       3 2  
Derivative, Notional Amount     $ 950.0   $ 312.5 $ 325.0
Effective Percentage         6.26% 9.44%
Net change in unrecognized loss on interest rate swaps, net of tax (6.6) (12.7)        
Estimated Net Transfer, Current $ 7