Annual and transition report of foreign private issuers [Sections 13 or 15(d)]

Income Taxes - Components of Income Tax Expense (Details)

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Income Taxes - Components of Income Tax Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Income before income taxes:      
Domestic $ 175.8 $ 239.1 $ 270.0
Foreign 469.6 515.7 453.5
Income before income taxes 645.4 754.8 723.5
Current:      
Domestic 30.0 38.7 42.9
Foreign 90.0 133.0 81.4
Current income tax expense 120.0 171.7 124.3
Deferred:      
Domestic 16.3 17.3 11.8
Foreign 85.1 55.6 75.4
Deferred income tax expense 101.4 72.9 87.2
Total income tax expense $ 221.4 $ 244.6 $ 211.5