Pension and Other Postretirement Benefits (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Nov. 30, 2021	Dec. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer contributions		$ 55			$ 271
Settlements	$ 1,511
Settlement charge, net of tax	$ 1,040
Multiemployer plans, additional expense					5	$ 5	$ 5
Actuarial loss					638
Defined benefit plan, benefit obligation, asset returns					65
Amounts of common stock included in plan assets		357			357	323
Defined benefit plan, estimated employer contributions		$ 27			27
Total contributions					12	13	11
Forecast
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer contributions			$ 110	$ 110
Pension Plan | Non-U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer contributions					234	18
Settlements					1,511	63	44
Actuarial loss					444	276
Pension Plan | U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer contributions					2	9
Settlements					0	3	$ 0
Actuarial loss					(43)	109
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actuarial loss					$ (20)	$ 7