LEASES - Lease Additional Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Abstract]
Cash paid from operating cash flows for amounts included in the measurement of lease liabilities	$ 20
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 7
Weighted-average remaining lease term	8 years 7 months 6 days
Weighted-average discount rate	6.20%