Retirement Plans - Schedule of Components of Net Periodic Benefit Cost (Details) - Pension Plan - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Components of net periodic benefit cost
Interest cost	$ 8	$ 10	$ 25	$ 26
Expected return on plan assets	(8)	(9)	(24)	(25)
Amortization of unrecognized:
Actuarial (gain) loss	3	3	9	9
Net periodic benefit cost	$ 3	$ 4	$ 10	$ 10