Goodwill (Tables)

12 Months Ended

Sep. 30, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Carrying Amount of Goodwill by Segment

Changes to the carrying amount of consolidated goodwill by segment are as follows:

	Americas	Asia	Europe	Middle East and India	Corporate and other	Total
Goodwill, net as of 30 September 2023	$146.6	$171.9	$493.5	$15.8	$33.9	$861.7
Currency translation and other	(0.3)	2.8	40.8	—	0.1	43.4
Goodwill, net as of 30 September 2024	$146.3	$174.7	$534.3	$15.8	$34.0	$905.1
Acquisition	—	—	31.3	—	—	31.3
Currency translation and other	(2.8)	(2.2)	32.3	—	0.2	27.5
Goodwill, net as of 30 September 2025	$143.5	$172.5	$597.9	$15.8	$34.2	$963.9

30 September	2025	2024	2023
Goodwill, gross	$1,238.6	$1,199.8	$1,158.4
Accumulated impairment losses(A)	(274.7)	(294.7)	(296.7)
Goodwill, net	$963.9	$905.1	$861.7

(A)Accumulated impairment losses are attributable to our Latin America reporting unit ("LASA") within the Americas segment and include the impact of currency translation.