SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - Valuation Allowance for Deferred Tax Assets [Member] - USD ($) $ in Millions		12 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		$ 48.9	$ 49.6	$ 50.8
Additions Charged (Benefit) to Costs and Expenses		(1.6)	(6.7)	(0.3)
Additions Charged to Other Accounts	[1]	(3.9)	6.0	(0.9)
Balance at End of Period		$ 43.4	$ 48.9	$ 49.6

[1] Foreign currency translation and other adjustments. The fiscal 2018 and 2017 amounts also included increases associated with the Company's acquisition of Luvata HTS.