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Long-term Financing and Sales of Receivables - Additional Information (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Receivables [Abstract]      
Interest income recognized on long-term receivables $ 1 $ 1 $ 1
Commitments to provide long-term financing 78 62  
Servicing obligations for long-term receivables $ 984 $ 970