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Restructuring and Other Charges - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 200,000	$ 10,200,000	$ 3,100,000	$ 10,200,000
Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges			500,000
Access Equipment
Restructuring Cost and Reserve [Line Items]
Restructuring charges	200,000	7,600,000	3,400,000	7,600,000
Commercial
Restructuring Cost and Reserve [Line Items]
Restructuring charges		1,500,000	100,000	1,500,000
Access Equipment Restructuring Plan 1 | Access Equipment
Restructuring Cost and Reserve [Line Items]
Restructuring charges	200,000	7,600,000	3,400,000	7,600,000
Access Equipment Restructuring Plan 1 | Access Equipment | Restructuring Related Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,100,000		8,100,000
Access Equipment Restructuring Plan 1 | Access Equipment | Accelerated Depreciation
Restructuring Cost and Reserve [Line Items]
Restructuring charges			2,800,000
Access Equipment Restructuring Plan 1 | Access Equipment | Inventory Obsolescence
Restructuring Cost and Reserve [Line Items]
Restructuring charges	700,000		4,500,000
Access Equipment Restructuring Plan 1 | Access Equipment | Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	400,000		800,000
Commercial Restructuring Plan | Commercial
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ 1,500,000	$ 100,000	$ 1,500,000

X

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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+ References

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