Annual and transition report of foreign private issuers pursuant to Section 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, 2024
Mar. 31, 2023
Mar. 31, 2022
Income before income taxes:      
Domestic $ 239.1 $ 270.0 $ 295.0
Foreign 515.7 453.5 348.1
Income before income taxes 754.8 723.5 643.1
Current:      
Domestic 38.7 42.9 44.4
Foreign 133.0 81.4 53.9
Current income tax expense 171.7 124.3 98.3
Deferred:      
Domestic 17.3 11.8 9.4
Foreign 55.6 75.4 76.3
Deferred income tax expense 72.9 87.2 85.7
Total income tax expense $ 244.6 $ 211.5 $ 184.0