Fair Value Measurements (Tables)

12 Months Ended

Sep. 30, 2025

Fair Value Disclosures [Abstract]

Schedule of Carrying Values and Fair Values of Financial Instruments

The carrying values and fair values of financial instruments were as follows:

	2025		2024
30 September	Carrying Value	Fair Value	Carrying Value	Fair Value
Assets
Derivatives
Forward exchange contracts	$81.3	$81.3	$100.8	$100.8
Interest rate management contracts	163.1	163.1	41.8	41.8
Liabilities
Derivatives
Forward exchange contracts	$69.5	$69.5	$59.2	$59.2
Interest rate management contracts	24.1	24.1	41.4	41.4
Long-term debt, including current portion and related party	17,663.7	17,348.7	14,144.4	13,897.3

Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis

The table below summarizes assets and liabilities on the consolidated balance sheets that are measured at fair value on a recurring basis:

	2025				2024
30 September	Total	Level 1	Level 2	Level 3	Total	Level 1	Level 2	Level 3
Assets at Fair Value
Derivatives
Forward exchange contracts	$81.3	$—	$81.3	$—	$100.8	$—	$100.8	$—
Interest rate management contracts	163.1	—	163.1	—	41.8	—	41.8	—
Total Assets at Fair Value	$244.4	$—	$244.4	$—	$142.6	$—	$142.6	$—
Liabilities at Fair Value
Derivatives
Forward exchange contracts	$69.5	$—	$69.5	$—	$59.2	$—	$59.2	$—
Interest rate management contracts	24.1	—	24.1	—	41.4	—	41.4	—
Total Liabilities at Fair Value	$93.6	$—	$93.6	$—	$100.6	$—	$100.6	$—

Fair Value Measurements, Nonrecurring

The table below presents the nonrecurring fair value measurements of these long-lived assets, categorized within the fair value hierarchy:

Balance Sheet Location	Total Estimated Value	Level 1	Level 2	Level 3	FY25 Impairment Charges(A)
Assets held for sale	$418.3	$—	$—	$418.3	$350.6
Plant and equipment, net	22.5	—	—	22.5	2,116.2

(A)Impairment charges were recorded in aggregate with other project exit-related costs as described in Note 5, Business and Asset Actions.