Goodwill and Intangible Assets (Tables)

9 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Components of Company's Goodwill and Intangible Assets

Goodwill and intangible assets comprise the following: 

	June 30, 2020		September 30, 2019		June 30, 2019
Goodwill	$	3,482.7	$	3,456.4	$	3,159.1
Intangible assets:
Customer relationships	$	1,046.2	$	1,038.4	$	789.3
Trademarks and tradenames	11.8		16.2		16.4
Noncompete agreements and other	68.1		46.4		55.4
Accumulated amortization	(503.7)		(441.8)		(432.7)
Intangible assets, net (definite-lived)	622.4		659.2		428.4
Trademarks and tradenames (indefinite-lived)	47.1		49.4		51.6
Total intangible assets, net	$	669.5	$	708.6	$	480.0