GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Changes in Carrying Value of Goodwill, by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 4,373	$ 4,336
Acquisitions	131	52
Dispositions	(2)
Foreign exchange and other	40	(15)
Goodwill, ending balance	4,542	4,373
Dow Jones
Goodwill [Roll Forward]
Goodwill, beginning balance	2,239	2,195
Acquisitions	29	44
Dispositions	0
Foreign exchange and other	0	0
Goodwill, ending balance	2,268	2,239
Digital Real Estate Services
Goodwill [Roll Forward]
Goodwill, beginning balance	1,575	1,604
Acquisitions	94	(8)
Dispositions	(2)
Foreign exchange and other	45	(21)
Goodwill, ending balance	1,712	1,575
Book Publishing
Goodwill [Roll Forward]
Goodwill, beginning balance	424	406
Acquisitions	6	16
Dispositions	0
Foreign exchange and other	(7)	2
Goodwill, ending balance	423	424
News Media
Goodwill [Roll Forward]
Goodwill, beginning balance	135	131
Acquisitions	2	0
Dispositions	0
Foreign exchange and other	2	4
Goodwill, ending balance	$ 139	$ 135