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Related Party Transactions (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Related Party Transactions [Abstract]      
Sale of Accounts Receivables Current Facility $ 250    
Percentage of Accounts Receivables Sold to Third Party 100.00%    
Continuing Involvement with Derecognized Transferred Financial Assets, Amount Outstanding $ 222 $ 238  
Notes Receivable, Related Parties, Current 38 34  
Trade Receivables Sold 2,300 2,400 $ 2,200
Cash Flows Between Transferor and Transferee, Proceeds from New Transfers 2,300 2,300 $ 2,200
Revenue from Related Parties 70 76  
Related Party Transaction, Purchases from Related Party $ 14 $ 12