Intangible Assets, Goodwill and Acquisitions (Tables)

3 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

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

		December 31, 2021					September 30, 2021
	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Customer relationships	6-21 yrs.	$	699.7	$	(513.0	)	$	694.9	$	(499.8	)
Trademarks	12 yrs.		3.8		(2.4	)		3.8		(2.3	)
Non-compete agreements	5 yrs.		2.7		(1.8	)		2.7		(1.7	)
Total intangible assets		$	706.2	$	(517.2	)	$	701.4	$	(503.8	)

Summary of Goodwill

The following is a summary of the goodwill activity for the periods ended September 30, 2021 and December 31, 2021:

	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		1.4		(1.7	)		(0.3	)
Balance, December 31, 2021	$	1,759.4	$	191.1		$	1,950.5