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LEASES AND OFF BALANCE SHEET ITEMS LEASES (Details)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2019
USD ($)
Sep. 30, 2019
USD ($)
Lessee Disclosure [Abstract]    
Operating Lease, Right-of-Use Asset $ 205 $ 205
Operating Lease, Right-of-Use Asset, Reclassified 8 8
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year 17 17
Lessee, Operating Lease, Liability, Payments, Due Year Two 58 58
Lessee, Operating Lease, Liability, Payments, Due Year Three 46 46
Lessee, Operating Lease, Liability, Payments, Due Year Four 36 36
Lessee, Operating Lease, Liability, Payments, Due Year Five 24 24
Lessee, Operating Lease, Liability, Payments, Due after Year Five 39 39
Lessee, Operating Lease, Liability, Payments, Due 220 220
Lessee, Operating Lease, Liability, Undiscounted Excess Amount 23 23
Operating Lease, Liability 197 197
Operating Lease, Liability, Current 55 55
Operating Lease, Liability, Noncurrent 142 142
Lease, Cost [Abstract]    
Operating Lease, Cost 17 49
Short-term Lease, Cost 10 30
Sublease Income 0 (1)
Lease, Cost 27 78
Operating Lease, Payments 17 52
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability $ 15 $ 36
Operating Lease, Weighted Average Remaining Lease Term 5 years 5 years
Operating Lease, Weighted Average Discount Rate, Percent 4.10% 4.10%