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Fair Value Measurements - Financial Assets and Liabilities, Classified by Level (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Mar. 31, 2025
Deferred compensation    
Assets:    
Investments in privately held companies $ 27,888 $ 27,980
Recurring | Level 1    
Assets:    
Cash equivalents 822,300 852,467
Investments in privately held companies 33,657 29,006
Currency derivative assets included in other current assets 0 0
Liabilities:    
Currency derivative liabilities included in accrued and other current liabilities 0 0
Recurring | Level 1 | Deferred compensation | Cash    
Assets:    
Investments in privately held companies 108 90
Recurring | Level 1 | Deferred compensation | Common stock    
Assets:    
Investments in privately held companies 762 540
Recurring | Level 1 | Deferred compensation | Money market funds    
Assets:    
Investments in privately held companies 7,906 7,359
Recurring | Level 1 | Deferred compensation | Mutual funds    
Assets:    
Investments in privately held companies 24,881 21,017
Recurring | Level 2    
Assets:    
Cash equivalents 0 0
Investments in privately held companies 0 0
Currency derivative assets included in other current assets 731 90
Liabilities:    
Currency derivative liabilities included in accrued and other current liabilities 10,038 2,849
Recurring | Level 2 | Deferred compensation | Cash    
Assets:    
Investments in privately held companies 0 0
Recurring | Level 2 | Deferred compensation | Common stock    
Assets:    
Investments in privately held companies 0 0
Recurring | Level 2 | Deferred compensation | Money market funds    
Assets:    
Investments in privately held companies 0 0
Recurring | Level 2 | Deferred compensation | Mutual funds    
Assets:    
Investments in privately held companies 0 0
Recurring | Level 3    
Assets:    
Cash equivalents 0 0
Investments in privately held companies 0 0
Currency derivative assets included in other current assets 0 0
Liabilities:    
Currency derivative liabilities included in accrued and other current liabilities 0 0
Recurring | Level 3 | Deferred compensation | Cash    
Assets:    
Investments in privately held companies 0 0
Recurring | Level 3 | Deferred compensation | Common stock    
Assets:    
Investments in privately held companies 0 0
Recurring | Level 3 | Deferred compensation | Money market funds    
Assets:    
Investments in privately held companies 0 0
Recurring | Level 3 | Deferred compensation | Mutual funds    
Assets:    
Investments in privately held companies $ 0 $ 0