EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain, before tax		$ 0	$ (171)	$ 0
United States
Defined Benefit Plan Disclosure [Line Items]
Aggregate cost of the defined contribution plans		3	19
Domestic Defined Contribution Plan
Defined Benefit Plan Disclosure [Line Items]
Aggregate cost of the defined contribution plans		57	63	64
International Defined Contribution Plan
Defined Benefit Plan Disclosure [Line Items]
Aggregate cost of the defined contribution plans		4	5	6
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contributions		15	15
Accumulated benefit obligation		115	105	474
Other Postretirement Benefits Plan | United States
Defined Benefit Plan Disclosure [Line Items]
Employer contributions		$ 13	$ 14	$ 14
Curtailment gain, before tax	$ 171
Curtailment gain, after tax	$ 130