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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Topic 606
-SubTopic 10
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Revenue - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Sep. 30, 2021
Unearned Revenue (Details)
Amortization	$ 1.1	$ 0.5	$ 1.9	$ 1.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01
Unearned Revenue (Details)
Remaining performance obligation, period	12 months		12 months
Equipment
Unearned Revenue (Details)
Contract assets	$ 9.6		$ 9.6		$ 1.9
Equipment \| Ventus
Unearned Revenue (Details)
Contract assets	$ 8.1		$ 8.1