Intangible Assets, net (Tables)

6 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Total intangible assets

	March 31, 2024						September 30, 2023
	Carrying Amount		Accumulated Amortization		Net Amount		Carrying Amount		Accumulated Amortization		Net Amount
Customer relationships	$	160.7	$	(90.2)	$	70.5	$	178.4	$	(97.2)	$	81.2
Trademarks and brands	164.5		(84.6)		79.9		194.0		(98.4)		95.6
Other intangible assets	3.1		(3.1)		—		3.1		(3.1)		—
Intangible assets, net	$	328.3	$	(177.9)	$	150.4	$	375.5	$	(198.7)	$	176.8