LEASES Lease Cost (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Leases [Abstract]
Operating Lease, Cost	$ 25	$ 80
Variable Lease, Cost	5	15
Short-term Lease, Cost	6	16
Sublease Income	(1)	(3)
Lease, Cost	$ 35	$ 108