v3.2.0.727
Borrowings - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Aug. 14, 2014
Sep. 22, 2011
Aug. 31, 2013
May. 31, 2007
Sep. 30, 2014
Sep. 30, 2013
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2009
Line Of Credit Facility Covenant Compliance [Line Items]                    
Outstanding amount of line of credit             $ 0 $ 0    
Unused available capacity             585,000,000      
Percentage of notes issued       99.10%            
Effective yield (percent)       6.251%            
6.125% Senior Notes [Member]                    
Line Of Credit Facility Covenant Compliance [Line Items]                    
Senior notes offered       $ 250,000,000            
Senior Notes [Member]                    
Line Of Credit Facility Covenant Compliance [Line Items]                    
Debt issuance costs             0 4,300,000 $ 0  
2007 Senior Notes [Member]                    
Line Of Credit Facility Covenant Compliance [Line Items]                    
Interest rate       6.125%            
Debt issuance costs       $ 1,900,000            
Debt issuance cost, amortization period       10 years            
Amortization related to the senior notes             300,000 500,000    
Purchased, principal amount of Senior Notes                   $ 125,000,000.0
Unamortized bond discount                   $ 1,000,000
Senior Notes, fair value             135,800,000 139,100,000    
2014 Senior Notes [Member] | Senior Notes [Member]                    
Line Of Credit Facility Covenant Compliance [Line Items]                    
Debt issuance costs     $ 4,300,000              
Interest rate     3.95%              
Debt issuance cost, amortization period     7 years              
Amortization related to the senior notes             3,100,000 3,700,000    
Senior Notes, fair value             417,800,000 426,600,000    
Senior notes, principal amount     $ 400,000,000.0              
Issuance price (percent)     99.871%              
Effective yield (percent)     3.971%              
Revolving Credit Facility [Member]                    
Line Of Credit Facility Covenant Compliance [Line Items]                    
Debt issuance cost capitalized             2,000,000      
Debt issuance costs             1,900,000 0 0  
Revolving Credit Facility [Member] | Fiscal 2015 Revolving Credit Facility [Member]                    
Line Of Credit Facility Covenant Compliance [Line Items]                    
Credit facility maximum borrowing capacity $ 750,000,000.0                  
Term 5 years                  
Annual facility fee (as basis points) 0.125%                  
Outstanding amount of line of credit             165,000,000 0    
Unused available capacity             $ 585,000,000      
Debt issuance costs $ 1,900,000                  
Weighted-average interest rate             1.18%      
Unused borrowing capacity fee             $ 800,000      
Revolving Credit Facility [Member] | Fiscal 2015 Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]                    
Line Of Credit Facility Covenant Compliance [Line Items]                    
Variable interest rate 1.125%                  
Revolving Credit Facility [Member] | U.S. Dollar Tranche [Member]                    
Line Of Credit Facility Covenant Compliance [Line Items]                    
Credit facility maximum borrowing capacity $ 670,000,000.0                  
Revolving Credit Facility [Member] | Multicurrency Tranche [Member]                    
Line Of Credit Facility Covenant Compliance [Line Items]                    
Credit facility maximum borrowing capacity $ 80,000,000.0                  
Revolving Credit Facility [Member] | Fiscal 2012 Credit Facilities [Member]                    
Line Of Credit Facility Covenant Compliance [Line Items]                    
Debt issuance cost expensed         $ 100,000          
Debt issuance cost capitalized             400,000      
Fiscal 2012 Credit Facilities [Member]                    
Line Of Credit Facility Covenant Compliance [Line Items]                    
Credit facility maximum borrowing capacity   $ 990,000,000.0                
Five-year term loan facility [Member]                    
Line Of Credit Facility Covenant Compliance [Line Items]                    
Credit facility maximum borrowing capacity   $ 490,000,000.0                
Term   5 years                
Interest at LIBOR plus basis points   1.25%                
Repayment of revolving credit facility           $ 400,000,000        
Five-year revolving credit facility [Member]                    
Line Of Credit Facility Covenant Compliance [Line Items]                    
Credit facility maximum borrowing capacity   $ 500,000,000.0                
Term   5 years                
Interest at LIBOR plus basis points   1.25%                
Annual facility fee (as basis points)   0.15%                
Annual facility fee, Total             $ 100,000 $ 800,000 $ 800,000  
Fiscal 2012 Term Loan [Member]                    
Line Of Credit Facility Covenant Compliance [Line Items]                    
Weighted-average interest rate               1.44% 1.47%