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Investments in Unconsolidated Affiliates - Summary of Investments in Unconsolidated Affiliates Accounted for Under Equity Method (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Schedule Of Equity Method Investments [Line Items]
Equity method investment ownership percentage	20.00%
Equity method investment	$ 28.9	$ 12.6
Mezcladores Trailers De Mexico S A De C V
Schedule Of Equity Method Investments [Line Items]
Equity method investment ownership percentage	49.00%
Equity method investment	$ 8.3	7.9
BME Fire Trucks LLC
Schedule Of Equity Method Investments [Line Items]
Equity method investment ownership percentage	25.00%
Equity method investment	$ 5.1
Construction Robotics, LLC
Schedule Of Equity Method Investments [Line Items]
Equity method investment ownership percentage	10.00%
Equity method investment	$ 2.9	1.8
AutoTech Fund II, L.P.
Schedule Of Equity Method Investments [Line Items]
Equity method investment ownership percentage	7.00%
Equity method investment	$ 6.5	$ 2.9
Carnegie Foundry LLC
Schedule Of Equity Method Investments [Line Items]
Equity method investment ownership percentage	7.00%
Equity method investment	$ 5.0
Westly Capital Partners Fund IV, L.P.
Schedule Of Equity Method Investments [Line Items]
Equity method investment ownership percentage	7.00%
Equity method investment	$ 1.1

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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