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LEASES (Narrative) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Leases [Abstract]      
Operating leases, rent expense $ 55   $ 167
Minimum      
Lessee, Lease, Description [Line Items]      
Remaining lease term   1 year  
Maximum      
Lessee, Lease, Description [Line Items]      
Remaining lease term   15 years  
Renewal term   15 years