Fair Value Measurements and Derivative Instruments (Tables)

9 Months Ended

Jun. 30, 2022

Interest Rate Swaps

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 swaps which were designated as cash flow hedges were as follows:

	Three Months Ended June 30,						Nine Months Ended June 30,
	2022			2021			2022			2021
Income (loss) recognized in Other comprehensive income	$	1.8		$	(0.2	)	$	5.4		$	(0.3	)
Net (loss) reclassified from Accumulated other comprehensive    income (loss) into Interest expense		(0.1	)		(0.8	)		(1.7	)		(6.1	)

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 swaps which were designated as cash flow hedges were as follows:

	Three Months Ended June 30,				Nine Months Ended June 30,
	2022		2021		2022		2021
Income recognized in Other comprehensive income (loss)	$	—	$	1.2	$	0.2	$	3.2
Net gain (loss) reclassified from Accumulated other    comprehensive income (loss) into Cost of services provided		—		1.2		1.5		0.8