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DEBT (Narrative) (Details) - USD ($)
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Mar. 31, 2019
Debt Instrument [Line Items]      
Unamortized discount $ 9,000,000    
Proceeds from borrowings 1,484,000,000 $ 1,520,000,000  
Repayments of debt 1,448,000,000 $ 1,553,000,000  
Secured Receivables Credit Facility      
Debt Instrument [Line Items]      
Proceeds from borrowings 985,000,000    
Repayments of debt 1,145,000,000    
4.20% Senior Notes due June 2029      
Debt Instrument [Line Items]      
Face amount $ 500,000,000    
Debt instrument, interest rate 4.20%    
Unamortized discount     $ 1,000,000
Debt issuance costs     $ 5,000,000