v3.19.1
Related Party Transactions (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Related Party Transactions [Abstract]      
Continuing Involvement with Derecognized Transferred Financial Assets, Amount Outstanding $ 256   $ 238
Notes Receivable, Related Parties, Current 50   $ 34
Trade Receivables Sold 597 $ 579  
Cash Flows Between Transferor and Transferee, Proceeds from New Transfers 579 573  
Revenue from Related Parties 20 19  
Related Party Transaction, Purchases from Related Party $ 3 $ 2