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Secured Borrowings and Collateralized Receivables (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Secured Borrowings and Collateralized Receivables      
Outstanding secured borrowings $ 0    
Receivables pledged as collateral 0 6.3  
Total secured borrowings   10.8  
Interest rate implicit in the installment receivables (as a percent)   8.00%  
Interest income associated with collateralized receivables 0.2 1.2 3.2
Interest expense associated with secured borrowings $ 0.3 $ 3.0 $ 5.3