Employee Benefit Plans (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost		$ 46	$ 88	$ 95
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Aggregate projected benefit obligations		9,298	12,182	$ 12,873
Pension Benefits | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Aggregate projected benefit obligations		$ 8,425	$ 11,086
Weighted average expected return on plan assets		5.00%	5.00%	5.50%
Pension Benefits | Non- U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Aggregate projected benefit obligations		$ 873	$ 1,096
Pension Benefits | Scenario, Forecast | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected return on plan assets	6.25%
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Aggregate projected benefit obligations		794	1,138	$ 1,252
Other Postretirement Benefits | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Aggregate projected benefit obligations		$ 758	$ 1,099
Weighted average expected return on plan assets		3.86%	3.87%	4.31%
Expected future discretionary contributions		$ 20
Other Postretirement Benefits | Non- U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Aggregate projected benefit obligations		36	$ 39
Other Postretirement Benefits | Scenario, Forecast | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected return on plan assets	4.25%
United States Pension Plan of US Entity, Non Qualified [Member]
Defined Benefit Plan Disclosure [Line Items]
Aggregate projected benefit obligations		1,000	$ 1,300
Expected future discretionary contributions		$ 90