EMPLOYEE BENEFIT PLANS (Components of the Net Cost of Retirement Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Total	$ 0	$ 0	$ (1)	$ (1)
Weighted average long-term expected rate or return on plan assets			3.10%
Other Postretirement Benefits Plan [Member] | Retirement Income Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	$ 0	0
Interest cost	4	5	11	15
Expected return on plan assets	(4)	(5)	(11)	(14)
Amortization of unrecognized items	3	3	8	7
Total	$ 3	$ 3	$ 8	$ 8