Pension, Other Postretirement Benefits and Savings Plans - Amounts Recognized in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Pension Plan [Member] | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Prior service (credit) cost	$ 3	$ 3
Net actuarial loss	1,744	1,836
Gross amount recognized	1,747	1,839
Deferred income taxes	103	81
Minority shareholders’ equity	0	0
Net amount recognized	1,850	1,920
Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service (credit) cost	22	22
Net actuarial loss	524	435
Gross amount recognized	546	457
Deferred income taxes	(77)	(59)
Minority shareholders’ equity	(4)	(4)
Net amount recognized	465	394
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service (credit) cost	(4)	(4)
Net actuarial loss	(85)	(96)
Gross amount recognized	(89)	(100)
Deferred income taxes	(2)	1
Minority shareholders’ equity	0	0
Net amount recognized	$ (91)	$ (99)