EMPLOYEE BENEFIT PLANS (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit	$ 0	$ 0	$ (1,000,000)	$ (1,000,000)
Other Postretirement Benefits Plan [Member] | Retirement Income Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit	(3,000,000)	(3,000,000)	(8,000,000)	(11,000,000)
UNITED STATES | Retirement Income Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discretionary contributions	$ 7,000,000	$ 57,000,000	$ 10,000,000	$ 61,000,000