Derivatives And Hedging Activities Notional Amount of Forward Contracts (Details) - Forward Foreign Currency Exchange Contract [Member] - USD ($) $ in Millions	Sep. 30, 2018	Sep. 30, 2017
Derivative [Line Items]
Notional amount of derivative contracts	$ 77.9	$ 26.7
Derivatives related to tobacco purchases [Member]
Derivative [Line Items]
Notional amount of derivative contracts	59.8	19.4
Derivatives related to processing costs [Member]
Derivative [Line Items]
Notional amount of derivative contracts	$ 18.1	$ 7.3