Employee Benefit Plans (Amounts Recognized in Balance Sheet and Assumptions) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Amounts Recognized In Balance Sheet [Abstract]
Noncurrent liabilities	$ (1,153)	$ (1,697)
Pension Plans Defined Benefit [Member] | U.S. [Member]
Defined Benefit Plan Amounts Recognized In Balance Sheet [Abstract]
Noncurrent assets	1	0
Current liabilities	(29)	(56)
Noncurrent liabilities	(232)	(722)
Total recognized	$ (260)	$ (778)
Defined Benefit Plan Weighted Average Assumptions Used In Calculating Benefit Obligation [Abstract]
Discount Rate	2.80%	2.30%
Rate of compensation increase	4.00%	4.00%
Interest crediting rate for applicable benefits	2.50%	2.10%
Defined Benefit Plan Weighted Average Assumptions Used In Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	2.60%	3.05%
Expected return on assets	5.20%	5.80%
Rate of compensation increase	4.00%	4.00%
Interest crediting rate for applicable benefits	2.10%	4.10%
Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax [Abstract]
Unrecognized net actuarial loss (gain)	$ 188	$ 467
Unrecognized prior service cost (credit)	0	0
Pension Plans Defined Benefit [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Amounts Recognized In Balance Sheet [Abstract]
Noncurrent assets	991	746
Current liabilities	(15)	(11)
Noncurrent liabilities	(288)	(345)
Total recognized	$ 688	$ 390
Defined Benefit Plan Weighted Average Assumptions Used In Calculating Benefit Obligation [Abstract]
Discount Rate	2.15%	1.80%
Rate of compensation increase	3.40%	3.10%
Defined Benefit Plan Weighted Average Assumptions Used In Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	1.80%	2.35%
Expected return on assets	2.50%	3.60%
Rate of compensation increase	3.40%	3.35%
Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax [Abstract]
Unrecognized net actuarial loss (gain)	$ 86	$ 326
Unrecognized prior service cost (credit)	1	0
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Amounts Recognized In Balance Sheet [Abstract]
Noncurrent assets	0	0
Current liabilities	(34)	(39)
Noncurrent liabilities	(103)	(131)
Total recognized	$ (137)	$ (170)
Defined Benefit Plan Weighted Average Assumptions Used In Calculating Benefit Obligation [Abstract]
Discount Rate	2.65%	2.15%
Defined Benefit Plan Weighted Average Assumptions Used In Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	2.35%	3.10%
Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax [Abstract]
Unrecognized net actuarial loss (gain)	$ (1)	$ 14
Unrecognized prior service cost (credit)	$ (145)	$ (182)