LEASES (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 13
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	28
Finance Lease, Liability, Payments, Remainder of Fiscal Year	3
Lease Liability Payments Remainder of Fiscal Year	31
Operating Lease, Payments	$ 28
Operating Lease, Weighted Average Remaining Lease Term	6 years 4 months 17 days
Finance Lease, Right-of-Use Asset, Amortization	$ 2
Operating Lease, Right-of-Use Asset	107	$ 0
Finance Lease, Right-of-Use Asset	13
LeaseRightofUseAsset	120
Operating Lease, Liability, Current	22	0
Finance Lease, Liability, Current	2
Operating Lease, Liability, Noncurrent	93	$ 0
Finance Lease, Liability, Noncurrent	12
LeaseLiability	129
Operating Lease, Cost	35
Short-term Lease, Cost	2
Variable Lease, Cost	$ 4
Finance Lease, Weighted Average Remaining Lease Term	8 years 1 month 13 days
Operating Lease, Weighted Average Discount Rate, Percent	6.03%
Finance Lease, Weighted Average Discount Rate, Percent	4.11%
Lease, Cost	$ 43
Lessee, Operating Lease, Liability, Payments, Due Year Two	25
Finance Lease, Liability, Payments, Due Year Two	2
Lease Liability Payments Due Year Two	27
Lessee, Operating Lease, Liability, Payments, Due Year Three	21
Finance Lease, Liability, Payments, Due Year Three	2
Lease Liability Payments Due Year Three	23
Lessee, Operating Lease, Liability, Payments, Due Year Four	14
Finance Lease, Liability, Payments, Due Year Four	2
Lease Liability Payments Due Year Four	16
Lessee, Operating Lease, Liability, Payments, Due Year Five	13
Finance Lease, Liability, Payments, Due Year Five	1
Lease Liability Payments Due Year Five	14
Lessee, Operating Lease, Liability, Payments, Due after Year Five	38
Finance Lease, Liability, Payments, Due after Year Five	7
Lease Liability Payments Due After Year Five	45
Lessee, Operating Lease, Liability, Payments, Due	139
Finance Lease, Liability, Payment, Due	17
Lease Liability Payments Due	156
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(24)
Finance Lease, Liability, Undiscounted Excess Amount	(3)
Lease Liability Undiscounted Excess Amount	(27)
Operating Lease, Liability	115
Finance Lease, Liability	$ 14
Minimum
Lessee, Lease, Description [Line Items]
Remaining Term of Operating and Finance Leases	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Remaining Term of Operating and Finance Leases	9 years