EMPLOYEE BENEFIT PLANS (Details) - Retirement Income Plans [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Other Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 1	$ 1	$ 1
Interest cost	6	5	17	16
Expected return on plan assets	(5)	(5)	(14)	(15)
Amortization of unrecognized items	2	2	7	8
Total	4	3	$ 11	10
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	$ 15	$ 10	$ 19	$ 29