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Income Taxes - Effective Tax Rate On Income Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income tax benefit at statutory rate	$ 188	$ 70	$ 92
State income tax, net of federal benefit	28	7	(13)
Nondeductible expenses	(13)	(14)	(8)
Foreign rate differential	1	0	(4)
Valuation allowance	(108)	(49)	2
Unrecognized tax benefit (expense)	0	0	3
Research & Development tax credits	(1)	11	0
Foreign income tax deduction	12	0	0
Other, net	(5)	(1)	3
Total income tax benefit	$ 102	$ 24	$ 75

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