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LEASES - Schedule of Maturities of Operating Leases (Details) - USD ($)
$ in Millions
Mar. 31, 2019
Jan. 01, 2019
Leases [Abstract]    
2019 (excluding three months) $ 49  
2020 51  
2021 37  
2022 27  
2023 17  
Thereafter 31  
Total lease payments 212  
Less interest (17)  
Present value of lease liabilities $ 195 $ 205