Derivative Instruments, Recorded in Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Commodity Derivatives [Member] | Derivatives Designated as Hedges [Member] | Other Current Assets [Member]
Derivative Instruments [Abstract]
Derivative asset	$ 0.5	$ 0.0
Commodity Derivatives [Member] | Derivatives Designated as Hedges [Member] | Other Current Liabilities [Member]
Derivative Instruments [Abstract]
Derivative liability	0.0	1.3
Foreign Exchange Contracts [Member] | Derivatives Designated as Hedges [Member] | Other Current Assets [Member]
Derivative Instruments [Abstract]
Derivative asset	0.1	0.1
Foreign Exchange Contracts [Member] | Derivatives not Designated as Hedges [Member] | Other Current Liabilities [Member]
Derivative Instruments [Abstract]
Derivative liability	$ 0.0	$ 0.0