RISK MANAGEMENT ACTIVITIES AND FAIR VALUE MEASUREMENTS - ADDITIONAL INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Derivative [Line Items]
Cash Equivalents, at Carrying Value	$ 6,000	$ 9,100
Equity Securities, FV-NI	113	163
Equity Securities, FV-NI, Unrealized Gain (Loss)	(45)	69
Long-term Debt, Fair Value	25,700	28,800
Long Term Debt, Current Maturities measured at Fair Value	3,600	3,600
Fair Value Hedging | Underlying, Other
Derivative [Line Items]
Underlying Debt Obligation, Carrying Amount	4,700	7,500
Net Investment Hedging | Underlying, Other
Derivative [Line Items]
Underlying Debt Obligation, Carrying Amount	11,200	12,000
Other Investments
Derivative [Line Items]
Investments, Fair Value Disclosure	$ 140	$ 192