Property and Equipment, net

6 Months Ended

Mar. 31, 2023

Property, Plant and Equipment [Abstract]

5. Property and Equipment, net

Property and equipment, net consists of the following:


	Useful Life	March 31, 2023		September 30, 2022
Land	—	$	43.3	$	43.3
Buildings and leasehold improvements	2-40 yrs.		47.9		46.3
Operating equipment	2-7 yrs.		332.2		302.4
Transportation vehicles	3-7 yrs.		348.2		339.8
Office equipment and software	3-10 yrs.		76.8		75.1
Construction in progress	—		5.8		5.7
Property and equipment			854.2		812.6
Less: Accumulated depreciation			522.1		484.3
Property and equipment, net		$	332.1	$	328.3

Construction in progress includes costs incurred for software and other assets that have not yet been placed in service. Depreciation expense related to property and equipment was $27.4 and $24.4 for the three months ended March 31, 2023 and 2022, respectively. Depreciation expense related to property and equipment was $54.5 and $45.8 for the six months ended March 31, 2023 and 2022, respectively.