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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Taxes calculated at federal rate	$ 68	$ 345	$ 194
State taxes, net of federal benefit	(5)	48	22
Change in liability for tax positions	(1)	0	0
Foreign income taxed at different rates	2	1	5
Unremitted foreign earnings	0	1	(2)
Other items, net	(3)	(2)	4
Income tax	$ 61	$ 393	$ 223
Federal income tax rates	21.00%	21.00%	21.00%
State taxes, net of federal benefit	(1.50%)	2.90%	2.40%
Change in liability for tax positions	(0.30%)	0.00%	0.00%
Foreign income taxed at different rates	0.60%	0.10%	0.60%
Unremitted foreign earnings	0.00%	0.10%	(0.20%)
Other items, net	(1.10%)	(0.20%)	0.30%
Income tax	18.70%	23.90%	24.10%

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