Segment Information - Reconciliation of Assets from Segments to Consolidated (Detail) - USD ($) $ in Millions	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Investments	$ 351	$ 297
Total assets	16,771	14,261
Digital Real Estate Services
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	3,146	2,322
Subscription Video Services
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	3,515	3,459
Dow Jones
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,798	2,480
Book Publishing
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,713	2,212
News Media
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,209	1,994
Other
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 2,039	$ 1,497