Pension and Other Postretirement Benefits - Schedule of Other Changes Recognized in Other Comprehensive Earnings (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	$ 1	$ 1	$ (8)
Amortization of net actuarial loss from prior years	(1)	(1)	(2)
Total recognized in other comprehensive income	0	0	(10)
Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	0	0	0
Amortization of net actuarial loss from prior years	0	0	0
Total recognized in other comprehensive income	0	0	0
Supplemental Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	0	0	(4)
Amortization of net actuarial loss from prior years	0	0	0
Total recognized in other comprehensive income	$ 0	$ 0	$ (4)