LEASES - Supplemental Cash Flow Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Abstract]
Operating cash flows related to operating leases	$ (2)
Financing cash flows related to finance leases	$ (1)
Weighted average remaining lease term (in years): operating	12 years 10 months 24 days
Weighted average remaining lease term (in years): finance	23 years 6 months
Weighted average discount rate: operating	4.66%
Weighted average discount rate: finance	4.66%