Income Taxes (Tables)

12 Months Ended

Sep. 30, 2023

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

The components of income tax expense (benefit) are as follows:

	Fiscal Year Ended
	September 30, 2023			September 30, 2022			September 30, 2021
Current:
Federal	$	22.7		$	7.5		$	(28.1	)
State		3.4			4.7			3.8
Deferred:
Federal		(22.4	)		(3.7	)		28.4
State		(4.2	)		(2.9	)		0.5
Valuation Allowance		5.1			—			—
Total income tax (benefit) expense	$	4.6		$	5.6		$	4.6

Schedule of Income Tax Expense (Benefit) Differs from Amount Computed at Federal Statutory Corporate Tax Rate

Income tax expense (benefit) differs from the amount computed at the federal statutory corporate tax rate as follows:

	Fiscal Year Ended
	September 30, 2023			September 30, 2022			September 30, 2021
Federal tax at statutory rate	$	(0.7	)	$	4.1		$	10.7
State tax, net of federal tax (benefit) expense		(0.8	)		1.2			3.6
Tax effect of:
Equity-based compensation		0.9			0.6			1.2
Non-deductible officers’ compensation		1.1			0.7			—
Provision to return and deferred tax adjustments		(0.8	)		(0.3	)		(0.6	)
Non-deductible promotional and entertainment expense		0.6			0.4			0.6
Fuel tax credit and other credits		(0.7	)		(0.8	)		(0.8	)
Carryback claim, net of adjustments		(0.8	)		(0.3	)		(10.1	)
Rate Changes		0.5			—			—
Valuation Allowance		5.1			—			—
Other, net		0.2			—			—
Income tax expense	$	4.6		$	5.6		$	4.6

Components of Net Deferred Tax Asset and Liability Accounts

The components of the Company’s net deferred tax asset and liability accounts resulting from temporary differences between the tax and financial reporting basis of assets and liabilities are as follows:

	September 30, 2023			September 30, 2022
Deferred tax assets:
Self-insurance reserves	$	31.8		$	30.7
Deferred compensation		2.8			3.0
Payroll related accruals		22.8			19.7
Other accrued expenses		—			5.4
Allowance for doubtful accounts		1.3			1.0
Lease liabilities		23.6			22.6
Net operating loss carryforward		7.1			8.5
Business interest expense		10.4			—
Other non-current deferred tax assets		4.5			3.3
Total non-current deferred tax assets		104.3			94.2
Valuation allowance		(5.1	)		—
Total deferred tax assets	$	99.2		$	94.2
Deferred tax liabilities:
Intangible assets	$	46.2		$	47.0
Property and equipment		57.3			78.5
Deferred revenue		15.0			10.6
Prepaid assets		0.2			0.2
Lease assets		22.0			20.9
Other non-current deferred tax liabilities		6.0			0.2
Total non-current deferred tax liabilities		146.7			157.4
Total net deferred tax liabilities	$	47.5		$	63.2
Classification on balance sheets:
Other assets	$	3.6		$	5.4
Deferred tax liabilities		51.1			68.6