Leases - Schedule of Lease Expense and Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Operating lease expense	$ 58.4	$ 63.1
Operating lease expense			$ 70.4
Other assets:
ROU assets	153.3	154.3
Accrued liabilities:
Current portion of lease liabilities	33.8	39.8
Other long-term liabilities:
Non-current portion of lease liabilities	128.9	125.4
Total lease liabilities	$ 162.7	$ 165.2
Right-of-use assets [Extensible List]	Other Assets, Noncurrent	Other Assets, Noncurrent
Current portion of lease liabilities [Extensible List]	Accrued Liabilities, Current	Accrued Liabilities, Current
Non-current portion of lease liabilities [Extensible List]	Other long-term liabilities	Other long-term liabilities
Weighted average remaining lease-term (in years)	6 years 7 months 13 days
Weighted average discount rate	4.23%