Employee Benefits - Schedule of Net Periodic Benefit (Income) Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Pension Plans
Components of net periodic (benefit) expense
Service cost	$ 6	$ 12
Interest cost	68	52
Expected return on plan assets	(71)	(100)
Recognition of prior service credit	(2)	(3)
Recognition of actuarial loss	25	37
Net periodic post-retirement benefit expense	26	(2)
Post-Retirement Benefit Plans
Components of net periodic (benefit) expense
Service cost	1	3
Interest cost	26	15
Recognition of prior service credit	(2)	2
Recognition of actuarial loss	(5)	0
Net periodic post-retirement benefit expense	$ 20	$ 20