ADDITIONAL FINANCIAL INFORMATION - Schedule of Other Non-Current Assets (Details) - USD ($) $ in Millions	Sep. 30, 2026	Jun. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Royalty advances to authors	$ 383	$ 386
Non-current receivables	605	580
Retirement benefit assets	173	169
Other	144	143
Total Other non-current assets	$ 1,305	$ 1,278