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LEASES Narratives (Details) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Lessee, Lease, Description [Line Items]    
Operating Leases, Future Minimum Payments, Due in Rolling Next 12 Months   $ 100
Operating Leases, Future Minimum Payments, Due in Rolling Year Two   100
Operating Leases, Future Minimum Payments, Due in Rolling Year Three   100
Operating Leases, Future Minimum Payments, Due in Rolling Year Four   100
Operating Leases, Future Minimum Payments, Due in Rolling Year Five   100
Operating Leases, Future Minimum Payments, Due Thereafter   $ 200
Facility Lease [Member] | Minimum [Member]    
Lessee, Lease, Description [Line Items]    
Lessee, Operating Lease, Term of Contract 1 year  
Lessee, Operating Lease, Renewal Term 1 year  
Facility Lease [Member] | Maximum [Member]    
Lessee, Lease, Description [Line Items]    
Lessee, Operating Lease, Term of Contract 20 years  
Lessee, Operating Lease, Renewal Term 10 years  
Vehicle Lease [Member] | Minimum [Member]    
Lessee, Lease, Description [Line Items]    
Lessee, Operating Lease, Term of Contract 1 year  
Vehicle Lease [Member] | Maximum [Member]    
Lessee, Lease, Description [Line Items]    
Lessee, Operating Lease, Term of Contract 4 years