EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
One-time noncash settlement charge, net of curtailment gain	$ 0	$ 171	$ 0	$ 171
Net periodic benefit (credit) cost	(4)	5	(3)	10
Retirement Health Care
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (credit) cost	(1)	0	(1)	0
UNITED STATES | Retirement Income
Defined Benefit Plan Disclosure [Line Items]
One-time noncash settlement charge, net of curtailment gain		171
One-time noncash settlement charge, net of curtailment gain, after tax		130
Retirement plan contributions	$ 2	$ 2	$ 4	$ 4