Derivative Instruments, Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2020	Mar. 31, 2019
Commodity Derivatives [Member] | Derivatives Designated as Hedges [Member] | Other Current Assets [Member]
Derivative instruments [Abstract]
Derivative asset, fair value, net	$ 0.0	$ 0.6
Commodity Derivatives [Member] | Derivatives Designated as Hedges [Member] | Other Current Liabilities [Member]
Derivative instruments [Abstract]
Derivative liability, fair value, net	1.3	0.3
Foreign Exchange Contracts [Member] | Derivatives Designated as Hedges [Member] | Other Current Assets [Member]
Derivative instruments [Abstract]
Derivative asset, fair value, net	0.1	0.2
Foreign Exchange Contracts [Member] | Derivatives not Designated as Hedges [Member] | Other Current Liabilities [Member]
Derivative instruments [Abstract]
Derivative liability, fair value, net	$ 0.0	$ 0.5