Employee Benefit Plans (Change in Benefit Obligations) (Parenthetical) (Details) - Pension Plans Defined Benefit [Member] - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 1,793	$ 2,359
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 3,658	$ 4,095