Financial Derivatives (Tables)

12 Months Ended

Sep. 30, 2021

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Summary of Combined Fair Values, Net of Tax of Interest Rate Derivative Instruments

The Company records any differences paid or received on its interest rate hedges to interest expense, financing costs and other. The following table summarizes the combined fair values, net of tax, of the interest rate derivative instruments (in millions):

		Assets/(Liabilities) as of
		September 30,
Instrument	Fair Value Hierarchy	2021			2020
Designated interest rate swaps1	Level 2	$	(7.7	)	$	(15.0	)

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1.Assets are included in the consolidated balance sheets in prepaid expenses and other current assets, while liabilities are included in accrued expenses.

Summary of Amounts of Gain (Loss) on Interest Rate Derivative Instruments Recognized in Other Comprehensive Income

The following table summarizes the amounts of gain (loss) on the interest rate derivative instruments recognized in other comprehensive income (in millions):

	Year Ended September 30,
Instrument	2021		2020			2019
Designated interest rate swaps	$	7.3	$	(13.4	)	$	(1.6	)