Segment Information - Reconciliation of Assets from Segments to Consolidated (Detail) - USD ($) $ in Millions		Sep. 30, 2018	Jun. 30, 2018
Segment Reporting, Asset Reconciling Item [Line Items]
Investments		$ 390	$ 393
Total assets		16,288	16,346
News and Information Services [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets		5,928	6,039
Subscription Video Services [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets		4,671	4,738
Book Publishing [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets		2,059	1,898
Digital Real Estate Services [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets		2,219	2,171
Other [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	[1]	$ 1,021	$ 1,107

[1] The Other segment primarily includes Cash and cash equivalents.