Income Taxes (Tables)

12 Months Ended

Dec. 31, 2024

Income Tax Disclosure [Abstract]

Summary of Income Tax Expense (Benefit)

Income tax expense is summarized as follows:

	Year Ended December 31,
(In millions)	2024		2023		2022
Current
Federal	$	343	$	387	$	791
State	26		42		78
	369		429		869
Deferred
Federal	(72)		52		217
State	(73)		22		18
	(145)		74		235
Income tax expense	$	224	$	503	$	1,104

Schedule of Reconciliation of Income Tax Expense Computed by Applying Statutory Federal Income Tax Rate

Income tax expense was different than the amounts computed by applying the statutory federal income tax rate as follows:

	Year Ended December 31,
	2024				2023				2022
(In millions, except rates)	Amount		Rate		Amount		Rate		Amount		Rate
Computed “expected” federal income tax	$	283	21.00	%	$	447	21.00	%	$	1,085	21.00	%
State income tax, net of federal income tax benefit	10		0.71	%	29		1.35	%	93		1.80	%
Deferred tax adjustment related to change in overall state tax rate	(26)		(1.96)	%	16		0.73	%	(23)		(0.45)	%
Valuation allowance	(42)		(3.09)	%	3		0.13	%	(66)		(1.28)	%
Excess executive compensation	9		0.66	%	11		0.50	%	10		0.20	%
Reserve on uncertain tax positions	(4)		(0.29)	%	6		0.31	%	6		0.12	%
Tax credits generated	(15)		(1.14)	%	(14)		(0.65)	%	(34)		(0.66)	%
Other, net	9		0.77	%	5		0.27	%	33		0.62	%
Income tax expense	$	224	16.66	%	$	503	23.64	%	$	1,104	21.35	%

Schedule of Composition of Net Deferred Tax Liabilities

The composition of net deferred tax liabilities is as follows:

	December 31,
(In millions)	2024		2023
Deferred Tax Assets
Net operating losses	$	166	$	173
Incentive compensation	44		47
Deferred compensation	1		5
Capital loss carryforward	—		16
Leases	19		96
Derivative instruments	2		—
Other	45		42
Less: valuation allowance	(72)		(114)
Total	205		265
Deferred Tax Liabilities
Properties and equipment	3,456		3,558
Leases	22		98
Derivative instruments	—		21
Other	1		1
Total	3,479		3,678
Net deferred tax liabilities	$	3,274	$	3,413

Schedule of Reconciliation of Unrecognized Tax Benefits

A reconciliation of unrecognized tax benefits is as follows:

	Year Ended December 31,
(In millions)	2024		2023		2022
Balance at beginning of period	$	20	$	13	$	7
Additions for tax positions of current period	3		4		1
Additions for tax positions of prior periods	—		3		5
Reductions for tax positions of prior periods	(7)		—		—
Balance at end of period	$	16	$	20	$	13