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Related and Interested Parties (Transactions with Related and Interested Parties) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Notes to Consolidated Financial Statements [Abstract]      
Sales $ 4 $ 5 $ 8
Cost of sales 8 19 97
Selling, transport and marketing expenses 10 7 8
Financing expenses (income), net (1) 3 (9)
General and administrative expenses 1 1 1
Management fees to the parent company $ 1 $ 1 $ 1