Income Taxes - Unrecognized Tax Positions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Unrecognized Tax Benefits [Roll Forward]
Unrecognized income tax benefits, January 1	$ 304	$ 325	$ 387
Additions for tax positions of prior years	19	108	26
Reductions for tax positions of prior years	(9)	(121)	(45)
Additions for current year tax positions	11	0	0
Reductions for settlements with taxing authorities	(12)	(1)	(23)
Other	(21)	(7)	(20)
Unrecognized income tax benefits, December 31	292	304	325
Net interest (expenses) benefit	(3)	17	$ 3
Accrued interest and penalties	$ 16	$ 14