Intangible Assets, Goodwill and Acquisitions (Tables)

6 Months Ended

Mar. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

Intangible assets as of March 31, 2022 and September 30, 2021 consisted of the following:

		March 31, 2022					September 30, 2021
	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Customer relationships	6-21 yrs.	$	711.7	$	(524.8	)	$	694.9	$	(499.8	)
Trademarks	12 yrs.		3.8		(2.5	)		3.8		(2.3	)
Non-compete agreements	5 yrs.		2.7		(1.9	)		2.7		(1.7	)
Total intangible assets		$	718.2	$	(529.2	)	$	701.4	$	(503.8	)

Summary of Goodwill

The following is a summary of the goodwill activity for the periods ended September 30, 2021 and March 31, 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)		30.1		36.9		67.0
Balance, March 31, 2022	$	1,788.1	$	229.7	$	2,017.8

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