Employee Benefit Plans (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost		$ 95	$ 96	$ 63
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Aggregate projected benefit obligations		12,873	11,950	$ 10,591
Pension Benefits | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Aggregate projected benefit obligations		$ 11,700	$ 10,824
Weighted average expected return on plan assets		5.50%	5.75%	5.75%
Pension Benefits | Non- U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Aggregate projected benefit obligations		$ 1,173	$ 1,126
Pension Benefits | Scenario, Forecast | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected return on plan assets	5.00%
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Aggregate projected benefit obligations		1,252	1,289	$ 1,324
Other Postretirement Benefits | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Aggregate projected benefit obligations		$ 1,208	$ 1,247
Weighted average expected return on plan assets		4.31%	5.04%	5.11%
Expected future discretionary contributions		$ 28
Other Postretirement Benefits | Non- U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Aggregate projected benefit obligations		44	$ 42
Other Postretirement Benefits | Scenario, Forecast | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected return on plan assets	3.87%
United States Pension Plan of US Entity, Non Qualified [Member]
Defined Benefit Plan Disclosure [Line Items]
Aggregate projected benefit obligations		1,400	$ 1,200
Expected future discretionary contributions		$ 74