Segment Information - Schedule of Reconciliation of Assets from Segments to Consolidated (Details) - USD ($) $ in Millions	Sep. 30, 2024	Jun. 30, 2024
Segment Reporting, Asset Reconciling Item [Line Items]
Investments	$ 458	$ 430
Total assets	16,927	16,684
Dow Jones
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	4,113	4,139
Digital Real Estate Services
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	3,090	3,020
Book Publishing
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,824	2,647
Subscription Video Services
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,556	2,587
News Media
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,115	2,003
Other
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,771	$ 1,858