Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Taxes

Schedule of components of income from continuing operations before income taxes

	For the Year Ended
	December 31,
	2020		2019		2018
Domestic	$	2,260,385	$	1,790,207	$	1,694,087
International		6,020		122		—
Income before income taxes	$	2,266,405	$	1,790,329	$	1,694,087

Schedule of components of the provision for income taxes

	For the Year Ended
	December 31,
	2020		2019		2018
Current:
Federal income tax expense	$	401,331	$	315,061	$	289,953
State income tax expense		97,085		62,795		59,487
International income tax expense		3,306		273		—
Total current		501,722		378,129		349,440
Deferred:
Federal income tax expense		16,749		19,367		16,309
State income tax (benefit) expense		(2,865)		2,027		3,851
International income tax benefit		(1,503)		(236)		—
Total deferred		12,381		21,158		20,160
Net income tax expense	$	514,103	$	399,287	$	369,600

Reconciliation of the provision for income taxes to the amounts computed at the federal statutory rate

	For the Year Ended
	December 31,
	2020		2019		2018
Federal income taxes at statutory rate	$	474,681	$	375,942	$	355,758
State income taxes, net of federal tax benefit		76,810		54,739		56,345
Excess tax benefit from share-based compensation		(16,918)		(25,992)		(34,703)
Revaluation of deferred tax liability		—		—		(1,262)
Benefit from investment in renewable energy tax credits		(17,904)		(875)		(2,037)
Other items, net		(2,566)		(4,527)		(4,501)
Total provision for income taxes	$	514,103	$	399,287	$	369,600

Schedule of deferred tax assets and liabilities

	December 31,
	2020		2019
Deferred tax assets:
Allowance for doubtful accounts	$	1,574	$	2,008
Tax credits		1,444		3,417
Other accruals		143,387		97,189
Operating lease liability		513,134		494,093
Other		16,594		15,732
Total deferred tax assets		676,133		612,439
Deferred tax liabilities:
Inventories		79,326		65,346
Property and equipment		194,000		162,613
Operating lease asset		498,042		479,821
Other		60,664		37,939
Total deferred tax liabilities		832,032		745,719
Net deferred tax liabilities	$	(155,899)	$	(133,280)

Summary of changes in gross amount of unrecognized tax benefits, excluding interest and penalties

	2020		2019		2018
Unrealized tax benefit, balance at January 1,	$	31,475	$	33,766	$	35,388
Additions based on tax positions related to the current year		4,795		4,627		3,550
Additions based on tax positions related to prior years		—		—		4,255
Payments related to items settled with taxing authorities		—		(443)		(2,792)
Reductions due to the lapse of statute of limitations and settlements		(5,303)		(6,475)		(6,635)
Unrealized tax benefit, balance at December 31,	$	30,967	$	31,475	$	33,766