RISK MANAGEMENT ACTIVITIES AND FAIR VALUE MEASUREMENTS - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Collateral already posted, aggregate fair value	$ 1,061	$ 307
Cash equivalents	8,300	8,000
Fair value of long-term debt	29,500	27,700
Current portion of long-term debt instruments	$ 5,300	$ 3,800
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	OTHER NONCURRENT ASSETS, Prepaid expenses and other current assets	OTHER NONCURRENT ASSETS, Prepaid expenses and other current assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accrued and other liabilities, OTHER NONCURRENT LIABILITIES	Accrued and other liabilities, OTHER NONCURRENT LIABILITIES
Fair Value Hedging | Underlying, Other
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying amount of the underlying debt obligation	$ 3,100	$ 2,700
Net Investment Hedging | Underlying, Other
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying amount of the underlying debt obligation	$ 11,200	$ 11,900