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Stock-Based Compensation (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period 5 years    
Stock option term in years 10 years    
Unrecognized compensation cost related to non-vested stock options $ 5.1    
Unrecognized compensation cost of restricted stock awards 25.9    
Amortization period of unrecognized compensation cost 3 years 2 months 12 days    
Amortization period of unrecognized compensation cost for restricted stock awards 1.5    
Segment, Continuing Operations [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense 28.3 30.0 27.3
Related tax benefits $ 10.4 $ 11.3 $ 10.4
Time-Based Restricted Stock Units [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock option term in years 5 years