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LEASES AND OFF BALANCE SHEET ITEMS LEASES (Details)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Lessee Disclosure [Abstract]    
Operating Lease, Right-of-Use Asset $ 211 $ 211
Operating Lease, Right-of-Use Asset, Reclassified 9 9
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year 40 40
Lessee, Operating Lease, Liability, Payments, Due Year Two 57 57
Lessee, Operating Lease, Liability, Payments, Due Year Three 45 45
Lessee, Operating Lease, Liability, Payments, Due Year Four 33 33
Lessee, Operating Lease, Liability, Payments, Due Year Five 22 22
Lessee, Operating Lease, Liability, Payments, Due after Year Five 35 35
Lessee, Operating Lease, Liability, Payments, Due 232 232
Lessee, Operating Lease, Liability, Undiscounted Excess Amount 30 30
Operating Lease, Liability 202 202
Operating Lease, Liability, Current 56 56
Operating Lease, Liability, Noncurrent 146 146
Lease, Cost [Abstract]    
Operating Lease, Cost 17 32
Short-term Lease, Cost 9 20
Sublease Income (1) (1)
Lease, Cost 25 51
Operating Lease, Payments 18 35
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability $ 10 $ 21
Operating Lease, Weighted Average Remaining Lease Term 6 years 6 years
Operating Lease, Weighted Average Discount Rate, Percent 4.20% 4.20%