Intangible Assets, Goodwill and Acquisitions (Tables)

3 Months Ended

Dec. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

Intangible assets as of December 31, 2019 and September 30, 2019 consisted of the following:

		December 31, 2019					September 30, 2019
	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Customer relationships	6-21 yrs.	$	643.8	$	(406.6	)	$	639.6	$	(393.3	)
Trademarks	4-12 yrs.		4.8		(1.7	)		4.8		(1.7	)
Non-compete agreements	5 yrs.		2.7		(0.8	)		2.7		(0.6	)
Total intangible assets		$	651.3	$	(409.1	)	$	647.1	$	(395.6	)

Schedule of Changes in Carrying Amount of Goodwill

The following is a summary of the activity for the periods ended September 30, 2019 and December 31, 2019 for goodwill:

	Maintenance Services		Development Services		Total
Balance, September 30, 2018	$	1,572.4	$	194.4	$	1,766.8
Acquisitions		43.6		—		43.6
Balance, September 30, 2019		1,616.0		194.4		1,810.4
Acquisitions		12.6		—		12.6
Balance, December 31, 2019	$	1,628.6	$	194.4	$	1,823.0