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Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Income Tax Disclosure [Abstract]      
Effective income tax rate 35.20% 37.20%  
Increase (decrease) in income tax expense $ 11,100    
Increase (decrease) in net income taxed at foreign rates 10,700    
Increase (decrease) in reserves for unrecognized tax benefits 26,400    
Effect of U.S. tax reform, BEAT 16,100    
Increase (decrease), impact of internal reorganizations of subsidiaries 16,300    
Impact of reversal of accruals for undistributed earnings (14,800)    
Effect of U.S. tax reform 0 $ 19,037 $ 0
Increase in tax credits for research and development (9,700)    
Release of valuation allowance (6,800)    
Impact of withholding taxes (5,800)    
Operating Loss Carryforwards [Line Items]      
Investment tax credit 58,600    
Unrecognized tax benefits of deferred tax assets offset by valuation allowance 11,200    
Net unrecognized tax benefit excluding portion offset by valuation allowance 198,100 167,200  
Possible decrease in tax expense in next 12 months 17,500    
Provision for deferred income tax liabilities 17,400 28,500  
TCJA tax expense, provisional   $ 19,000  
Measurement period adjustment (900)    
TCJA tax expense, after adjustments 18,100    
Domestic Tax Authority      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards 242,300    
Foreign Tax Authority      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards 387,600    
Deferred tax assets, operating loss carryforwards, not subject to expiration $ 53,800