Segment Information - Reconciliation of Assets from Segments to Consolidated (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Jun. 30, 2018
Segment Reporting, Asset Reconciling Item [Line Items]
Investments	$ 345	$ 393
Total assets	16,227	16,346
News and Information Services [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	5,905	6,039
Subscription Video Services [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	4,618	4,738
Book Publishing [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,141	1,898
Digital Real Estate Services [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,189	2,171
Other [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,029	$ 1,107