FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Mar. 31, 2026	Jun. 30, 2025
Assets:
Equity and other securities	$ 902	$ 931
Fair Value, Recurring
Assets:
Equity and other securities	902	931
Total assets	910	943
Fair Value, Recurring | Interest rate derivatives—cash flow hedges | Cash Flow Hedging
Assets:
Derivative assets	8	12
Fair Value, Recurring | Level 1
Assets:
Equity and other securities	38	67
Total assets	38	67
Fair Value, Recurring | Level 1 | Interest rate derivatives—cash flow hedges | Cash Flow Hedging
Assets:
Derivative assets	0	0
Fair Value, Recurring | Level 2
Assets:
Equity and other securities	58	50
Total assets	66	62
Fair Value, Recurring | Level 2 | Interest rate derivatives—cash flow hedges | Cash Flow Hedging
Assets:
Derivative assets	8	12
Fair Value, Recurring | Level 3
Assets:
Equity and other securities	806	814
Total assets	806	814
Fair Value, Recurring | Level 3 | Interest rate derivatives—cash flow hedges | Cash Flow Hedging
Assets:
Derivative assets	$ 0	$ 0