Employee Benefits - Schedule of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Retirement Benefits [Abstract]
Service cost	$ 0	$ 1	$ 1	$ 2
Interest cost	19	12	56	36
Expected return on assets	(26)	(22)	(76)	(65)
Amortization of prior service credit / actuarial loss	1	3	2	9
Net periodic benefit cost	$ (6)	$ (6)	$ (17)	$ (18)