Derivatives And Hedging Activities Notional Amount of Forward Contracts (Details) - Foreign Exchange Contract [Member] - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Derivative [Line Items]
Derivative, Notional Amount	$ 152.6	$ 180.0	$ 96.7
Tobacco purchases [Member] | Derivatives Designated As Hedges [Member]
Derivative [Line Items]
Derivative, Notional Amount	101.3	123.2	76.9
Processing costs [Member] | Derivatives Not Designated As Hedges [Member]
Derivative [Line Items]
Derivative, Notional Amount	27.8	35.1	19.8
Crop input sales [Member] | Derivatives Not Designated As Hedges [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 23.5	$ 21.7	$ 0.0