Intangible Assets, Goodwill and Acquisitions (Tables)

9 Months Ended

Jun. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

Intangible assets as of June 30, 2023 and September 30, 2022 consisted of the following:

		June 30, 2023					September 30, 2022
	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Customer relationships	6-21 yrs.	$	725.5	$	(583.5	)	$	723.1	$	(550.5	)
Trademarks	12 yrs.		3.8		(2.9	)		3.8		(2.6	)
Non-compete agreements	5 yrs.		2.7		(2.6	)		2.7		(2.2	)
Total intangible assets		$	732.0	$	(589.0	)	$	729.6	$	(555.3	)

Summary of Goodwill

The following is a summary of the goodwill activity for the periods ended September 30, 2022 and June 30, 2023:

	Maintenance Services		Development Services		Total
Balance, September 30, 2021	$	1,758.0	$	192.8	$	1,950.8
Acquisitions (1)		34.7		23.3		58.0
Balance, September 30, 2022	$	1,792.7	$	216.1	$	2,008.8
Acquisitions (1)		10.8		1.9		12.7
Balance, June 30, 2023	$	1,803.5	$	218.0	$	2,021.5

(1)The acquisitions adjustment includes the immaterial impact of foreign currency adjustments during the period.