Fair Value Measurements (Tables)

3 Months Ended

Dec. 31, 2025

Fair Value Disclosures [Abstract]

Schedule of Carrying Value and Fair Value of Financial Instruments

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

	31 December 2025		30 September 2025
	Carrying Value	Fair Value	Carrying Value	Fair Value
Assets
Derivatives
Forward exchange contracts	$72.3	$72.3	$81.3	$81.3
Interest rate management contracts	216.4	216.4	163.1	163.1
Liabilities
Derivatives
Forward exchange contracts	$84.6	$84.6	$69.5	$69.5
Interest rate management contracts	53.5	53.5	24.1	24.1
Long-term debt, including current portion and related party	17,465.1	17,141.2	17,663.7	17,348.7

The carrying amounts reported on the consolidated balance sheets for cash and cash items, trade receivables, payables and accrued liabilities, accrued income taxes, and short-term borrowings approximate fair value due to the short-term nature of these instruments. Accordingly, these items have been excluded from the above table.

Schedule of Fair Value 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:

	31 December 2025				30 September 2025
	Total	Level 1	Level 2	Level 3	Total	Level 1	Level 2	Level 3
Assets at Fair Value
Derivatives
Forward exchange contracts	$72.3	$—	$72.3	$—	$81.3	$—	$81.3	$—
Interest rate management contracts	216.4	—	216.4	—	163.1	—	163.1	—
Total Assets at Fair Value	$288.7	$—	$288.7	$—	$244.4	$—	$244.4	$—
Liabilities at Fair Value
Derivatives
Forward exchange contracts	$84.6	$—	$84.6	$—	$69.5	$—	$69.5	$—
Interest rate management contracts	53.5	—	53.5	—	24.1	—	24.1	—
Total Liabilities at Fair Value	$138.1	$—	$138.1	$—	$93.6	$—	$93.6	$—

Schedule of 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
Assets held for sale	$447.9	$—	$—	$447.9
Plant and equipment, net	13.5	—	—	13.5