RETIREMENT AND POSTRETIREMENT BENEFIT PLANS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net periodic benefit costs:
Employer contributions	$ 1	$ 1	$ 5	$ 6
Expected contribution to defined benefit pension plans during the reminder of 2017			2
Pension Benefit
Net periodic benefit costs:
Service cost				1
Interest cost	1	1	1	1
Expected return on plan assets	(1)	(1)	(1)	(2)
Recognized actuarial loss	1		1	1
Settlement loss		3	3	6
Total	1	3	4	7
Postretirement Benefit
Net periodic benefit costs:
Service cost	1	1	2	2
Interest cost	1	1	2	2
Total	$ 2	$ 2	$ 4	$ 4