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Restructuring and Other Charges - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | $ 2.8 | $ 14.4
Access Equipment |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 3.1 | 10.4
Commercial |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 0.1 | 1.5
Access Equipment Restructuring Plan 1 | Access Equipment |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 3.1 | 10.4
Access Equipment Restructuring Plan 1 | Access Equipment | Restructuring Actions |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 7.4 | 4.7
Access Equipment Restructuring Plan 1 | Access Equipment | Accelerated Depreciation |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 2.8 | 2.8
Access Equipment Restructuring Plan 1 | Access Equipment | Inventory Obsolescence |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 4.1 | 1.6
Access Equipment Restructuring Plan 1 | Access Equipment | Other Operational Costs |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | $ 0.5 | 0.3
Commercial Restructuring Plan | Commercial |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges |  | 1.5
Commercial Restructuring Plan | Commercial | Accelerated Depreciation |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges |  | $ 4.1

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