POSTRETIREMENT BENEFITS AND EMPLOYEE STOCK OWNERSHIP PLAN - Weighted Average Assumptions For The Benefit Calculations As Well As Assumed Health Care Trend Rates Statement Of Earnings (Details)	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate (in percent)	4.20%	4.20%	3.70%
Expected return on plan assets (in percent)	6.00%	6.00%	5.90%
Rate of compensation increase (in percent)	2.80%	2.90%	2.80%
Interest crediting rate for cash balance plans (in percent)	4.70%	4.30%	4.30%
Other Retiree Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate (in percent)	5.80%	5.60%	5.00%
Expected return on plan assets (in percent)	8.50%	8.50%	8.40%