Intangible Assets, Goodwill and Acquisitions (Tables)

12 Months Ended

Sep. 30, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

Intangible assets as of September 30, 2022 and September 30, 2021 consisted of the following:

		September 30, 2022					September 30, 2021
	Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Customer relationships	6-21 yrs.	$	723.1	$	(550.5	)	$	694.9	$	(499.8	)
Trademarks	12 yrs.		3.8		(2.6	)		3.8		(2.3	)
Non-compete agreements	5 yrs.		2.7		(2.2	)		2.7		(1.7	)
Total intangible assets		$	729.6	$	(555.3	)	$	701.4	$	(503.8	)

Schedule of Future Amortization Expense

Amortization expense is anticipated to be as follows in future years:

Fiscal Year Ended September 30,
2023	$	44.2
2024		35.4
2025		29.1
2026		21.7
2027		14.9
2028 and thereafter		29.0
	$	174.3

Summary of Goodwill

The following is a summary of the goodwill activity for the periods ended September 30, 2021 and September 30, 2022:

	Maintenance Services		Development Services		Total
Balance, September 30, 2020		1,680.4		178.9		1,859.3
Acquisitions		77.6		13.9		91.5
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

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