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Taxes on Income (Composition) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Notes to Consolidated Financial Statements [Abstract]      
Current taxes $ 91 $ 53 $ 208
Deferred taxes 61 76 (23)
Taxes in respect of prior years (5) 0 (27)
Income taxes $ 147 $ 129 $ 158