Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

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Income Taxes (Details) (USD $)
 3 Months Ended 6 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Operating Loss Carryforwards        
Income before income taxes $ 176,745,000 $ 144,874,000 $ 316,609,000 $ 321,416,000
Provision for income taxes 37,499,000 38,244,000 66,166,000 79,419,000
Effective tax rate 21.20% 26.40% 20.90% 24.70%
Estimated effective tax rate for the fiscal year ending June 30, 2014 21.40%      
Unrecognized tax benefits, reduction in next twelve months resulting from lapse of applicable statute of limitations     7,200,000  
Jurisdictions With Tax Rates Lower Than U.S. Statutory Tax Rate
        
Operating Loss Carryforwards        
Decrease in income taxes (4,700,000)   (7,400,000)  
U.S. Federal Research Tax Credit
        
Operating Loss Carryforwards        
Decrease in income taxes (1,700,000)   (3,100,000)  
Non-Taxable Change in the Value of Assets of Deferred Savings Plan
        
Operating Loss Carryforwards        
Decrease in income taxes $ (2,600,000)   $ (3,600,000)