EMPLOYEE BENEFIT PLANS (Components of the Net Cost of Retirement Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Total	$ 1	$ 1	$ 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	3	5	7	10
Expected return on plan assets	(3)	(5)	(7)	(9)
Amortization of unrecognized items	2	2	5	4
Total	$ 2	$ 2	$ 5	$ 5