Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule Finite-Lived Intangible Assets

The table below summarizes the major classes of our intangible assets:

	2025			2024
30 September	Gross	Accumulated Amortization/ Impairment	Net	Gross	Accumulated Amortization/ Impairment	Net
Finite-lived:
Customer relationships	$532.3	($318.5)	$213.8	$524.9	($298.2)	$226.7
Patents and technology	31.1	(21.0)	10.1	32.9	(20.7)	12.2
Other	64.4	(29.9)	34.5	69.3	(32.9)	36.4
Total finite-lived intangible assets	$627.8	($369.4)	$258.4	$627.1	($351.8)	$275.3
Indefinite-lived:
Trade names and trademarks	44.6	(9.5)	35.1	46.2	(9.9)	36.3
Total intangible assets	$672.4	($378.9)	$293.5	$673.3	($361.7)	$311.6

Schedule of Indefinite-Lived Intangible Assets

The table below summarizes the major classes of our intangible assets:

	2025			2024
30 September	Gross	Accumulated Amortization/ Impairment	Net	Gross	Accumulated Amortization/ Impairment	Net
Finite-lived:
Customer relationships	$532.3	($318.5)	$213.8	$524.9	($298.2)	$226.7
Patents and technology	31.1	(21.0)	10.1	32.9	(20.7)	12.2
Other	64.4	(29.9)	34.5	69.3	(32.9)	36.4
Total finite-lived intangible assets	$627.8	($369.4)	$258.4	$627.1	($351.8)	$275.3
Indefinite-lived:
Trade names and trademarks	44.6	(9.5)	35.1	46.2	(9.9)	36.3
Total intangible assets	$672.4	($378.9)	$293.5	$673.3	($361.7)	$311.6

Schedule of Projected Annual Amortization Expense

The table below details the amount of amortization expense expected to be recorded for our finite-lived intangible assets in each of the next five years and thereafter:

2026	$31.5
2027	30.7
2028	27.1
2029	24.1
2030	23.5
Thereafter	121.5
Total	$258.4