Benefit Plans - Schedule of Accrued Benefit Obligation Recorded in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Deferred income tax expense	$ 11	$ 7	$ (1)
Postretirement Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain	40	44	29
Deferred income tax expense	(9)	(10)	(6)
Accumulated other comprehensive income	31	34	$ 23
Postretirement Benefit Plan | Changes
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain	(4)	15
Deferred income tax expense	1	(4)
Accumulated other comprehensive income	$ (3)	$ 11