XML 164 R131.htm IDEA: XBRL DOCUMENT v3.20.4
Related and Interested Parties (Balances with Interested Parties) (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Notes to Consolidated Financial Statements [Abstract]    
Other current assets $ 35 $ 27
Other current liabilities $ 2 $ 2