Intangible Assets, net (Tables)

9 Months Ended

Jun. 30, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Total intangible assets

	June 30, 2025						September 30, 2024
	Carrying Amount		Accumulated Amortization		Net Amount		Carrying Amount		Accumulated Amortization		Net Amount
Customer relationships	$	160.8	$	(101.2)	$	59.6	$	160.7	$	(94.6)	$	66.1
Trademarks and brands	164.4		(94.8)		69.6		164.4		(88.7)		75.7
Other intangible assets	3.1		(3.1)		—		3.1		(3.1)		—
Intangible assets, net	$	328.3	$	(199.1)	$	129.2	$	328.2	$	(186.4)	$	141.8