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Pension and Other Postretirement Benefits (Schedule of Projected Benefit Obligations in Excess of Plan Assets) (Details) - Foreign Plan - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Projected benefit obligations $ 288 $ 432
Accumulated benefit obligations 257 389
Fair value of plan assets $ 151 $ 194