Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Schedule of Income Tax Provision

The income tax provision was as follows (in millions):

Year Ended December 31,	2019		2018		2017
Current:
Federal	$	40.0	$	30.3	$	95.1
State	24.0		11.5		16.9
	64.0		41.8		112.0
Deferred:
Federal	34.7		20.4		(14.2		)
State	5.2		9.6		4.1
	39.9		30.0		(10.1		)
Total	$	103.9	$	71.8	$	101.9

Schedule of Effective Income Tax Rate Reconciliation

The reconciliation between amounts computed using the federal income tax rate of 21% in 2019 and 2018, and 35% in 2017 and our income tax provision is shown in the following tabulation (in millions):

Year Ended December 31,	2019			2018			2017
Federal tax provision at statutory rate	$	78.8		$	70.9		$	121.5
State taxes, net of federal income tax benefit	23.6			16.1			13.3
Non-deductible items	2.6			1.5			1.3
Permanent differences related to stock compensation	0.2			(0.1		)	(0.8		)
Net change in valuation allowance	(0.5		)	0.5			0.3
General business credits	(0.9		)	(1.1		)	(0.9		)
Deferred remeasurement for change in statutory tax rate	—			(15.8		)	(32.9		)
Other	0.1			(0.2		)	0.1
Income tax provision	$	103.9		$	71.8		$	101.9

Schedule of Deferred Tax Assets and Liabilities

Individually significant components of the deferred tax assets and (liabilities) are presented below (in millions):

December 31,	2019			2018
Deferred tax assets:
Deferred revenue and cancellation reserves	$	48.4		$	47.2
Allowances and accruals, including state tax carryforward amounts	42.1			40.8
Lease Liability	69.7			—
Credits and other	0.3			0.3
Valuation allowance	(0.6		)	(1.1		)
Total deferred tax assets	159.9			87.2
Deferred tax liabilities:
Inventories	(40.0		)	(42.0		)
Goodwill	(60.7		)	(48.2		)
Property and equipment, principally due to differences in depreciation	(113.6		)	(78.0		)
Right of Use Asset	(66.6		)	—
Prepaid expenses and other	(10.1		)	(10.2		)
Total deferred tax liabilities	(291.0		)	(178.4		)
Total	$	(131.1	)	$	(91.2	)

Summary of Open Tax Years

Open tax years at December 31, 2019 included the following:

Federal	2016 - 2019
21 states	2015 - 2019