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Intangible Assets and Goodwill - Amortization of Intangible Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Finite-Lived Intangible Assets [Line Items]      
Total amortization expense $ 584.3 $ 689.1 $ 753.7
Amortization expense charged to cost of sales      
Finite-Lived Intangible Assets [Line Items]      
Total amortization expense 18.5 12.2 15.8
Amortization expense charged to operating expense      
Finite-Lived Intangible Assets [Line Items]      
Total amortization expense $ 565.8 $ 676.9 $ 737.9