v3.26.1
INCOME TAXES - Schedule of Reconciliation (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Amount      
U.S. federal statutory rate $ (41.5)    
State and local taxes, net of U.S. federal benefit 4.9    
Effect of cross-border tax laws (30.4)    
Research & development credits (45.1)    
Changes in valuation allowance 135.3    
Excess tax benefits from stock-based compensation (25.3)    
Nondeductible compensation 7.0    
Changes in unrecognized tax benefits, including interest 13.9    
Provision for (benefit from) income taxes $ 100.4 $ (12.4) $ 41.4
Percent      
U.S. federal statutory rate 21.00% 21.00% 21.00%
State and local taxes, net of U.S. federal benefit (2.50%) 0.40% 0.60%
Foreign tax rate differential   (0.20%) 0.20%
Effect of cross-border tax laws 15.30%    
Research & development credits 22.80%    
Excess tax benefits from stock-based compensation 12.80% (0.10%) (0.10%)
Nondeductible compensation (3.60%)    
Changes in unrecognized tax benefits, including interest (7.00%)    
Foreign earnings   (0.50%) (1.50%)
Tax credits   1.20% 1.70%
Excess tax benefits from stock-based compensation   0.20% (0.10%)
Earn-out adjustments   0.00% 0.10%
Valuation allowance—domestic   (5.00%) (9.10%)
Valuation allowance—foreign   (0.60%) (1.10%)
Global intangible low-taxed income   (0.50%) (1.00%)
Foreign-derived intangible income   0.30% 0.50%
Change in reserves   0.00% 0.90%
Goodwill impairment   (16.00%) (12.80%)
Other   0.10% (0.40%)
Effective tax rate (50.80%) 0.30% (1.10%)
Tax expense (benefit) from change in deferred tax assets     $ 29.2
Turkey      
Amount      
Withholding taxes $ 62.6    
Nondeductible and other $ 10.6    
Percent      
Withholding taxes (31.70%)    
Nondeductible and other (5.40%)    
United Kingdom      
Amount      
Nondeductible and other $ 11.2    
Percent      
Nondeductible and other (5.60%)    
Switzerland      
Amount      
Nondeductible and other $ 7.1    
Foreign tax rate differential $ 9.3    
Percent      
Nondeductible and other (3.60%)    
Foreign tax rate differential (4.70%)    
Other foreign jurisdictions      
Amount      
Foreign tax rate differential $ 9.9    
Percent      
Foreign tax rate differential (5.00%)    
United States      
Amount      
Nondeductible and other $ 2.4    
Changes in valuation allowance $ 103.8    
Percent      
Nondeductible and other (1.10%)    
Changes in valuation allowance (52.50%)