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Credit from Banks and Others (Narratives) (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Notes to Consolidated Financial Statements [Abstract]    
Net debt to EBITDA under securitization agreements 3.5  
Securitization framework $ 350  
Secured trade receivable in case of credit default percentage ownership 30.00%  
Utilization of the securitization facility $ 261 $ 332
Limit guarantees and indemnities to third parties up to an agreed amount $ 550  
Grant loans only to subsidiaries and to associated companies in which it holds at least 25.00%  
Total guarantees the Company provided including to an associated Company $ 85