Intangible Assets and Goodwill (Tables)

6 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

The following table summarizes the carrying amounts and related accumulated amortization for intangible assets as of:

	March 31, 2024				September 30, 2023
	Cost		Accumulated Amortization		Cost		Accumulated Amortization
Finite-lived assets:
Customer relationships	$	1,294.8	$	(331.4)	$	1,290.2	$	(291.4)
Technology, including patents	190.6		(91.5)		192.3		(83.1)
Software	54.5		(35.9)		41.7		(31.7)
Trade names	50.7		(7.5)		41.9		(4.2)
	1,590.6		(466.3)		1,566.1		(410.4)
Indefinite-lived assets:
Trade names	222.5		—		221.4		—
Total	$	1,813.1	$	(466.3)	$	1,787.5	$	(410.4)

Schedule of Goodwill

The following table summarizes the changes in the Company’s goodwill, by reportable operating segment, for the six months ended March 31, 2024:

	Advanced Process Solutions		Molding Technology Solutions		Total
Balance as of September 30, 2023	$	1,394.9	$	633.2	$	2,028.1
Acquisition measurement period adjustments	1.8		—		1.8
Foreign currency adjustments	11.0		3.6		14.6
Balance as of March 31, 2024	$	1,407.7	$	636.8	$	2,044.5