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Goodwill And Intangible Assets, Net (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2010
Goodwill [Line Items]      
Goodwill written off related to sale of securities clearing     $ 29.3
Accumulated amortization 20.4    
Weighted-average remaining useful life of the intangible assets, in years P5Y9M18D    
Amortization of intangibles 37.0 21.8 9.0
Matrix Financial Solutions, Inc. [Member]
     
Goodwill [Line Items]      
Decrease in goodwill due to disposition of non-controlling interest of a subsidiary $ 9.3    
Software And Software Licenses [Member]
     
Goodwill [Line Items]      
Weighted-average remaining useful life of the intangible assets, in years P4Y2M12D    
Customer Contracts And Lists [Member]
     
Goodwill [Line Items]      
Weighted-average remaining useful life of the intangible assets, in years P7Y6M    
Other Intangibles [Member]
     
Goodwill [Line Items]      
Weighted-average remaining useful life of the intangible assets, in years P4Y10M24D