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Operating Segments (Non Current Assets by Geographical Location of the Assets) (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Disclosure of geographical areas [Line Items]    
Non-current assets $ 6,128 $ 5,567
Israel [Member]    
Disclosure of geographical areas [Line Items]    
Non-current assets 3,905 3,570
Europe [Member]    
Disclosure of geographical areas [Line Items]    
Non-current assets 1,380 1,228
Asia [Member]    
Disclosure of geographical areas [Line Items]    
Non-current assets 434 401
North America [Member]    
Disclosure of geographical areas [Line Items]    
Non-current assets 333 309
Others [Member]    
Disclosure of geographical areas [Line Items]    
Non-current assets $ 76 $ 59