Fair Value Measurements (Tables)

3 Months Ended

Dec. 31, 2023

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 2023		30 September 2023
	Carrying Value	Fair Value	Carrying Value	Fair Value
Assets
Derivatives
Forward exchange contracts	$78.8	$78.8	$76.4	$76.4
Interest rate management contracts	74.4	74.4	317.7	317.7
Liabilities
Derivatives
Forward exchange contracts	$62.0	$62.0	$124.4	$124.4
Interest rate management contracts	60.3	60.3	87.0	87.0
Long-term debt, including current portion and related party	12,091.3	11,692.9	10,046.3	9,173.5

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 2023				30 September 2023
	Total	Level 1	Level 2	Level 3	Total	Level 1	Level 2	Level 3
Assets at Fair Value
Derivatives
Forward exchange contracts	$78.8	$—	$78.8	$—	$76.4	$—	$76.4	$—
Interest rate management contracts	74.4	—	74.4	—	317.7	—	317.7	—
Total Assets at Fair Value	$153.2	$—	$153.2	$—	$394.1	$—	$394.1	$—
Liabilities at Fair Value
Derivatives
Forward exchange contracts	$62.0	$—	$62.0	$—	$124.4	$—	$124.4	$—
Interest rate management contracts	60.3	—	60.3	—	87.0	—	87.0	—
Total Liabilities at Fair Value	$122.3	$—	$122.3	$—	$211.4	$—	$211.4	$—