SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($)	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Significant Accounting Policies [Line Items]
Cash and cash equivalents	$ 2,095,000,000	$ 2,403,000,000	$ 1,872,000,000
Restricted cash	0	0
Finance leases	0
Advertising and promotional expenses	$ 545,000,000	505,000,000	$ 491,000,000
Minimum
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	2 years
Unearned advances write-off period	12 months
Minimum | Capitalized software
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	2 years
Maximum
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	50 years
Unearned advances write-off period	24 months
Maximum | Capitalized software
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	15 years
REA Group
Significant Accounting Policies [Line Items]
Cash and cash equivalents	$ 255,000,000	$ 280,000,000