Significant Accounting Policies, Trade Accounts Receivable (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Trade Accounts Receivable [Abstract]
Trade receivables, allowance for credit losses	$ (1.7)	$ (1.3)
Trade receivables sold without recourse	126.4	88.7	$ 75.4
Costs related to selling accounts receivables	$ (0.3)	$ (0.2)	$ (0.5)