Intangible Assets and Goodwill - Amortization of Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Total amortization expense	$ 689.1	$ 753.7	$ 934.4
Amortization expense charged to cost of sales
Finite-Lived Intangible Assets [Line Items]
Total amortization expense	12.2	15.8	12.4
Amortization expense charged to operating expense
Finite-Lived Intangible Assets [Line Items]
Total amortization expense	$ 676.9	$ 737.9	$ 922.0