SEGMENT INFORMATION - Reconciliation of Goodwill and Intangible Assets from Segments to Consolidated (Details) - USD ($) $ in Millions	Jun. 30, 2026	Jun. 30, 2025
Segment Reporting [Line Items]
Total Goodwill and intangible assets, net	$ 6,379	$ 6,303
Dow Jones
Segment Reporting [Line Items]
Total Goodwill and intangible assets, net	3,244	3,256
Digital Real Estate Services
Segment Reporting [Line Items]
Total Goodwill and intangible assets, net	1,931	1,798
Book Publishing
Segment Reporting [Line Items]
Total Goodwill and intangible assets, net	907	941
News Media
Segment Reporting [Line Items]
Total Goodwill and intangible assets, net	297	308
Other
Segment Reporting [Line Items]
Total Goodwill and intangible assets, net	$ 0	$ 0