Fair Value Measurements and Derivative Instruments (Tables)

3 Months Ended

Dec. 31, 2025

Derivative Instruments Gain Loss [Line Items]

Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

The following tables summarize the financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2025 and September 30, 2025:


	December 31, 2025
	Carrying Value		Level 1		Level 2		Level 3
Other assets:
Investments held by Rabbi Trust	$	8.4	$	8.4	$	—	$	—
Total assets	$	8.4	$	8.4	$	—	$	—
Accrued expenses and other current liabilities:
Fuel derivative contracts	$	0.5	$	—	$	0.5	$	—
Other liabilities:
Interest rate derivative contracts		1.9		—		1.9		—
Obligation to Rabbi Trust		8.4		8.4		—		—
Total liabilities	$	10.8	$	8.4	$	2.4	$	—


	September 30, 2025
	Carrying Value		Level 1		Level 2		Level 3
Other assets:
Investments held by Rabbi Trust	$	7.9	$	7.9	$	—	$	—
Total assets	$	7.9	$	7.9	$	—	$	—
Accrued expenses and other current liabilities:
Fuel derivative contracts	$	0.1	$	—	$	0.1	$	—
Other liabilities:
Interest rate derivative contracts		1.5		—		1.5		—
Obligation to Rabbi Trust		7.9		7.9		—		—
Total liabilities	$	9.5	$	7.9	$	1.6	$	—

Interest Rate Contracts

Derivative Instruments Gain Loss [Line Items]

Summary of Effects on Consolidated Financial Statements of Designated As Cash Flow Hedges

The effects on the consolidated financial statements of the interest rate contracts which were designated as cash flow hedges were as follows:


	Three Months Ended December 31,
	2025		2024
Income recognized in Other comprehensive (loss) income	$	0.3	$	13.1
Net income reclassified from Accumulated other comprehensive (loss) into Interest expense		0.8		2.0

Fuel Swap Contracts

Derivative Instruments Gain Loss [Line Items]

Summary of Effects on Consolidated Financial Statements of Designated As Cash Flow Hedges

The effects on the consolidated financial statements of the fuel swap contracts which were designated as cash flow hedges were as follows:


	Three Months Ended December 31,
	2025			2024
(Loss) recognized in Other comprehensive (loss) income	$	(0.5	)	$	—
Net (loss) reclassified from Accumulated other comprehensive (loss) into Cost of services provided		(0.1	)		(0.4	)

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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