Schedule II - Valuation and Qualifying Accounts (Details) - Valuation Allowance for Deferred Tax Assets [Member] - USD ($) $ in Millions		12 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Valuation and Qualifying Accounts [Roll Forward]
Balance at beginning of period		$ 90.7	$ 46.9	$ 43.4
Additions charged (benefit) to costs and expenses		(4.6)	86.2	4.5
Additions charged to other accounts	[1]	(1.0)	2.8	(1.0)
Reclassified as held for sale		27.1	(45.2)	0.0
Balance at end of period		$ 112.2	$ 90.7	$ 46.9

[1] Foreign currency translation and other adjustments.