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Other Receivables (Information) (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Notes to Consolidated Financial Statements [Abstract]    
Government institutions $ 108 $ 78
Prepaid expenses 52 43
Insurance receivables 1 26
Current tax assets 79 16
Other 55 62
Total other receivables $ 295 $ 225