Commitments and Contingencies (Details) $ in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2019 CAD ($)	Sep. 30, 2018 USD ($)
Loss Contingency, Damages Sought, Value			$ 10.0
Document Period End Date	Sep. 30, 2020
Product Warranty Expense	$ 2.6	$ 3.9		$ 18.7
Accrued settlements	0.2	0.2
Estimated Insurance Recoveries	5.0
Accrued settlements	0.2	$ 0.2
Siemens [Member]
Accrued settlements	10.0
Accrued settlements	$ 10.0
Product Concentration Risk [Member]
Product Warranty Expense				$ 14.1