EMPLOYEE BENEFIT PLANS - Schedule of Items Not Yet Recognized as a Component of Postretirement Expense (Details) - USD ($) $ in Millions	Jun. 30, 2025	Jun. 30, 2024
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	$ 19	$ 19
Prior service benefit	0
Net deferred income tax (assets) liabilities	(4)
Accumulated other comprehensive loss (income)	15
Retirement Health Care
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	(14)	$ (14)
Prior service benefit	(4)
Net deferred income tax (assets) liabilities	4
Accumulated other comprehensive loss (income)	$ (14)