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Property, Plant, and Equipment
 12 Months Ended
Sep. 30, 2024
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Disclosure Property, Plant and Equipment
The following table summarizes our PP&E, net at September 30, 2024 and 2023:
Estimated Useful Life
September 30,
2024		September 30,
2023
PP&E
Land
n/a
$18.9 $18.5 
Buildings
3 - 30 years
147.9 142.6 
Machinery and equipment
2 - 10 years
1,132.7 1,105.3 
Capitalized software costs
3 - 7 years
62.5 60.2 
Construction in progress
n/a
62.0 38.5 
Total gross property, plant and equipment1,424.0 1,365.1 
Accumulated depreciation(1,074.9)(1,027.2)
Total PP&E$349.1 $337.9 
The components of depreciation expense for PP&E, net and amortization expense for capitalized software costs were as follows:
Fiscal Year
 202420232022
Depreciation expense
$52.7 $55.6 $55.7 
Amortization expense associated with capitalized software
4.35.04.7
As of September 30, 2024, the Company had $5.8, included in accounts payable for the acquisition of PP&E, which is considered a non-cash investing activity in the Consolidated Statements of Cash Flows.