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Intangible Assets and Goodwill - Amortization of Intangible Assets (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Finite-Lived Intangible Assets [Line Items]        
Total amortization expense $ 133.7 $ 146.4 $ 265.3 $ 292.1
Amortization expense charged to cost of sales        
Finite-Lived Intangible Assets [Line Items]        
Total amortization expense 5.0 3.9 10.2 7.6
Amortization expense charged to operating expense        
Finite-Lived Intangible Assets [Line Items]        
Total amortization expense $ 128.7 $ 142.5 $ 255.1 $ 284.5