Segment Information - Reconciliation of Assets from Segments to Consolidated (Detail) - USD ($) $ in Millions	Sep. 30, 2021	Jun. 30, 2021
Segment Reporting, Asset Reconciling Item [Line Items]
Investments	$ 499	$ 351
Total assets	16,418	16,771
Digital Real Estate Services
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,983	3,146
Subscription Video Services
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	3,354	3,515
Dow Jones
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,802	2,798
Book Publishing
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,747	2,713
News Media
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,172	2,209
Other
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,861	$ 2,039