Benefit Plans - Schedule of Change in Projected Benefit Obligation, Plan Assets and Funded Status (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Change in projected benefit obligation
Service cost	$ 133	$ 102	$ 104
Interest cost	249	229	199
Pension benefits
Change in projected benefit obligation
Benefit obligation, beginning of year	4,511	6,500
Service cost	132	101	103
Interest cost	239	219	191
Participant contributions	0	0
Remeasurement of projected benefit obligation (gains) losses	125	(1,382)
Benefits paid	(379)	(894)
Translation adjustment and other	(44)	(33)
Benefit obligation, end of year	4,584	4,511	6,500
Change in plan assets
Fair value of plan assets, beginning of year	4,430	6,525
Actual return on plan assets	418	(1,189)
Employer contribution	14	24
Benefits paid	(379)	(894)
Translation adjustment and other	(43)	(36)
Fair value of plan assets, end of year	4,440	4,430	6,525
Funded status	(144)	(81)
Prior service credit	0
Unamortized pension and other postretirement prior service credit	0	0
Postretirement benefits
Change in projected benefit obligation
Benefit obligation, beginning of year	203	284
Service cost	1	1	1
Interest cost	10	10	8
Participant contributions	16	16
Remeasurement of projected benefit obligation (gains) losses	(4)	(62)
Benefits paid	(42)	(42)
Translation adjustment and other	1	(4)
Benefit obligation, end of year	185	203	$ 284
Change in plan assets
Fair value of plan assets, beginning of year
Employer contribution	26	26
Fair value of plan assets, end of year
Funded status	(185)	(203)
Prior service credit	(18)
Unamortized pension and other postretirement prior service credit	$ (18)	$ (39)