FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Mar. 31, 2025	Jun. 30, 2024
Assets:
Equity and other securities	$ 270	$ 214
Fair Value, Recurring
Assets:
Equity and other securities	270	214
Total assets	285	242
Fair Value, Recurring | Interest rate derivatives - cash flow hedges | Cash Flow Hedging
Assets:
Derivative assets	15	28
Fair Value, Recurring | Level 1
Assets:
Equity and other securities	59	53
Total assets	59	53
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	47	39
Total assets	62	67
Fair Value, Recurring | Level 2 | Interest rate derivatives - cash flow hedges | Cash Flow Hedging
Assets:
Derivative assets	15	28
Fair Value, Recurring | Level 3
Assets:
Equity and other securities	164	122
Total assets	164	122
Fair Value, Recurring | Level 3 | Interest rate derivatives - cash flow hedges | Cash Flow Hedging
Assets:
Derivative assets	$ 0	$ 0