Employee Benefit Plans - EGTS - Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Postretirement
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 11	$ 12	$ 7
Interest cost	20	19	21
Expected return on plan assets	(29)	(22)	(34)
Settlement	0	0	0
Net amortization	(1)	(3)	(4)
Net periodic benefit cost (credit)	1	6	(10)
U.S. | Pension
Defined Benefit Plan Disclosure [Line Items]
Service cost	22	30	17
Interest cost	83	78	93
Expected return on plan assets	(108)	(134)	(140)
Settlement	17	3	0
Net amortization	19	25	32
Net periodic benefit cost (credit)	$ 23	$ 2	2
U.S. | Pension | EGTS
Defined Benefit Plan Disclosure [Line Items]
Service cost			5
Interest cost			8
Expected return on plan assets			(47)
Net amortization			3
Net periodic benefit cost (credit)			(31)
U.S. | Other Postretirement | EGTS
Defined Benefit Plan Disclosure [Line Items]
Service cost			1
Interest cost			4
Expected return on plan assets			(16)
Net amortization			(3)
Net periodic benefit cost (credit)			$ (14)