Segment Information - Reconciliation of Assets from Segments to Consolidated (Detail) - USD ($) $ in Millions	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting, Asset Reconciling Item [Line Items]
Investments	$ 297	$ 335
Total assets	14,261	15,711
News Media
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,994	3,008
Subscription Video Services
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	3,459	4,406
Dow Jones
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,480	2,474
Book Publishing
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,212	2,074
Digital Real Estate Services
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,322	2,229
Other
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,497	$ 1,185