Intangible Assets, net (Tables)

6 Months Ended

Mar. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Total intangible assets

	March 31, 2022						September 30, 2021
	Carrying Amount		Accumulated Amortization		Net Amount		Carrying Amount		Accumulated Amortization		Net Amount
Customer relationships	$	178.6	$	(80.1)	$	98.5	$	178.6	$	(75.3)	$	103.3
Trademarks and brands	195.1		(80.3)		114.8		195.1		(75.3)		119.8
Other intangible assets	3.1		(3.1)		—		3.1		(3.1)		—
Intangible assets, net	$	376.8	$	(163.5)	$	213.3	$	376.8	$	(153.7)	$	223.1