EMPLOYEE BENEFIT PLANS (Details) - Retirement Income Plans [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Other Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	5	6	11	11
Expected return on plan assets	(4)	(5)	(9)	(10)
Amortization of unrecognized items	2	3	5	6
Total	3	4	$ 7	7
Weighted average long-term expected rate or return on plan assets			4.42%
United States Postretirement Benefit Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Discretionary contributions	$ 2	$ 2	$ 4	$ 19