Segment Information - Reconciliation of Assets from Segments to Consolidated (Detail) - USD ($) $ in Millions	Mar. 31, 2021	Jun. 30, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Investments	$ 391	$ 297
Total assets	15,397	14,261
Digital Real Estate Services
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,660	2,322
Subscription Video Services
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	3,618	3,459
Dow Jones
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,457	2,480
Book Publishing
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,386	2,212
News Media
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,320	1,994
Other
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,565	$ 1,497