v3.26.1
RISK MANAGEMENT ACTIVITIES AND FAIR VALUE MEASUREMENTS - Additional Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Collateral already posted, aggregate fair value $ 260 $ 1,100
Cash equivalents 8,700 8,300
Fair value of long-term debt 28,300 29,500
Current portion of long-term debt instruments $ 6,500 $ 5,300
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 $ 5,000 $ 3,100
Net Investment Hedging | Underlying, Other    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Carrying amount of the underlying debt obligation $ 12,000 $ 11,200