Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Schedule of Provision for (Benefit from) Income Taxes

The provision for (benefit from) income taxes consists of the following (in millions):

	Year Ended December 31,
	2022			2021			2020
Current:
Federal	$	—		$	(46	)	$	(1	)
State		5			6			3
		5			(40	)		2
Deferred:
Federal		166			161			(162	)
State		(1	)		10			(25	)
		165			171			(187	)
Total provision for (benefit from) income taxes for income	$	170		$	131		$	(185	)

Schedule of Reconciliation between the Statutory Federal Income Tax Rate and the Effective Tax Rate

The following table reconciles the differences between the statutory federal income tax rate and the effective tax rate (dollars in millions):

	Year Ended December 31,
	2022						2021						2020
	Amount			%			Amount			%			Amount			%
Provision for (benefit from) income taxes at statutory   federal rate	$	73			21.0	%	$	105			21.0	%	$	89			21.0	%
State income taxes, net of federal income tax benefit		3			0.8			44			8.7			(15	)		(3.6	)
Net income attributable to noncontrolling interests		(28	)		(8.0	)		(29	)		(5.8	)		(20	)		(4.7	)
Change in valuation allowance		122			34.9			33			6.8			(267	)		(63.2	)
Nondeductible goodwill		—			—			—			—			41			9.8
Amended return adjustments		—			—			(22	)		(4.4	)		—			—
Nondeductible loss on divestiture		—			—			—			—			(15	)		(3.4	)
Other		—			—			—			—			2			0.3
Provision for (benefit from) income taxes and   effective tax rate for income	$	170			48.7	%	$	131			26.3	%	$	(185	)		(43.8	)%

Schedule of Components of Deferred Income Taxes

Deferred income taxes are based on the estimated future tax effects of differences between the financial statement and tax bases of assets and liabilities under the provisions of the enacted tax laws. Deferred income taxes as of December 31, 2022 and 2021 consist of (in millions):

	December 31,
	2022					2021
	Assets			Liabilities		Assets			Liabilities
Net operating loss and credit carryforwards	$	553		$	—	$	833		$	—
Property and equipment		—			323		—			343
Self-insurance liabilities		30			—		49			—
Prepaid expenses		—			31		—			30
Intangibles		—			148		—			144
Investments in unconsolidated affiliates		—			58		—			58
Other liabilities		—			9		—			9
Long-term debt and interest		41			—		48			—
Accounts receivable		16			—		22			—
IRC Section 163(j) interest limitation		448			—		329			—
Accrued vacation		19			—		22			—
Accrued bonus		19			—		31			—
Other comprehensive income		6			—		5			—
Right-of-use assets		—			148		—			137
Right-of-use liability		156			—		142			—
Stock-based compensation		5			—		4			—
Deferred compensation		51			—		64			—
IRC Section 481(a) adjustments		—			122		—			191
Other		19			—		38			—
Total		1,363			839		1,587			912
Valuation allowance		(829	)		—		(814	)		—
Total deferred income taxes	$	534		$	839	$	773		$	912

Schedule of Reconciliation of the Total Amount of Unrecognized Tax Benefit

The following is a tabular reconciliation of the total amount of unrecognized tax benefit for the years ended December 31, 2022, 2021 and 2020 (in millions):

	Year Ended December 31,
	2022		2021			2020
Unrecognized tax benefit, beginning of year	$	42	$	45		$	26
Gross increases — tax positions in current period		8		5			19
Reductions — tax positions in prior period		—		(8	)		—
Unrecognized tax benefit, end of year	$	50	$	42		$	45