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Financial Instruments (Effects of Net Investment Hedges on Accumulated Other Comprehensive Losses) (Details) - Net Investment Hedging [Member] - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]      
(Gain) Loss Recognized in Accumulated Other Comprehensive Losses $ (375) $ 503 $ (58)
Gain (Loss) Recognized in Net Earnings (Losses) (7) (40) (36)
Foreign Currency Contract [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
(Gain) Loss Recognized in Accumulated Other Comprehensive Losses (16) 79 (23)
Gain (Loss) Recognized in Net Earnings (Losses) (7) (40) (36)
Foreign Currency Denominated Debt [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
(Gain) Loss Recognized in Accumulated Other Comprehensive Losses (359) 424 (35)
Gain (Loss) Recognized in Net Earnings (Losses) $ 0 $ 0 $ 0