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Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 1,467.1	$ 1,397.0
Less accumulated depreciation	(871.2)	(831.1)
Property, plant and equipment, net	595.9	565.9
Land and Land Improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	71.4	63.9
Buildings
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	407.3	377.1
Machinery and Equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	729.5	723.7
Software and Related Costs
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	203.0	175.6
Equipment on operating lease to others
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	18.8	21.7
Construction in Progress
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 37.1	$ 35.0

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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