SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Millions	12 Months Ended
	Jun. 30, 2024 USD ($) hedgingInstrument	Jun. 30, 2023 USD ($) hedgingInstrument	Jun. 30, 2022 USD ($) hedgingInstrument	Jun. 30, 2021 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash	$ 5	$ 1	$ 3	$ 5
Hosting arrangement term (in years) (up to)	10 years
Performance period for performance awards (in years)	3 years
Minimum percentage for calculating the amortization of actuarial gains and losses under the corridor approach	5.00%
Contract term (in years)	one year or less
Allowance for doubtful accounts	$ 5	3
Non-customer receivables	39	14
Allowance for credit loss	$ 3	$ 3
Number of hedging instruments designated as fair value hedges | hedgingInstrument	0	0	0
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful life (in years)	7 years
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful life (in years)	30 years