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Related and Interested Parties (Transactions with Related and Interested Parties) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Notes to Consolidated Financial Statements [Abstract]      
Sales $ 5 $ 8 $ 35
Cost of sales 19 97 113
Selling, transport and marketing expenses 7 8 7
Financing expenses (income), net 3 (9) 0
General and administrative expenses 1 1 1
Management fees to the parent company $ 1 $ 1 $ 1