Intangible Assets, net (Tables)

6 Months Ended

Mar. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Total intangible assets

	March 31, 2020						September 30, 2019
	Carrying Amount		Accumulated Amortization		Net Amount		Carrying Amount		Accumulated Amortization		Net Amount
Customer relationships	$	209.4	$	(71.2)	$	138.2	$	209.4	$	(65.5)	$	143.9
Trademarks and brands	213.4		(66.2)		147.2		213.4		(60.8)		152.6
Other intangible assets	3.1		(3.1)		—		3.1		(3.1)		—
Intangible assets, net	$	425.9	$	(140.5)	$	285.4	$	425.9	$	(129.4)	$	296.5