Retirement and Deferred Compensation Plans - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan, Assumptions Used in Calculations [Abstract]
Defined benefit plan, net periodic benefit cost (credit)	$ 2	$ (2)	$ 1
Expected benefit payments in the next fiscal year	9
Defined contribution plans expense	114	99	104
Deferred compensation plans expense	22	12	18
Other Postretirement Benefit Plans
Defined Benefit Plan, Assumptions Used in Calculations [Abstract]
Benefit expense (benefit)	$ (1)	$ 35	$ 28