Employment Benefit Plans Net Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Number of months for highest consecutive compensation	60 months
Number of years of salaried employees to qualify for pension plan retirement	10 years
Pension Benefits
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 10	$ 18	$ 25
Interest cost	84	62	56
Expected return on plan assets	(185)	(182)	(176)
Amortization of net (gain) loss	(34)	3	2
Settlement loss (gain)	0	(1)	(1)
Net (benefit) cost recognized	$ (125)	$ (100)	$ (94)