Segment Information - Reconciliation of Goodwill and Intangible Assets from Segments to Consolidated (Detail) - USD ($) $ in Millions	Sep. 30, 2018	Jun. 30, 2018
Segment Reporting Information [Line Items]
Total Goodwill and intangible assets, net	$ 7,760	$ 7,889
News and Information Services [Member]
Segment Reporting Information [Line Items]
Total Goodwill and intangible assets, net	2,716	2,730
Subscription Video Services [Member]
Segment Reporting Information [Line Items]
Total Goodwill and intangible assets, net	2,769	2,853
Book Publishing [Member]
Segment Reporting Information [Line Items]
Total Goodwill and intangible assets, net	797	804
Digital Real Estate Services [Member]
Segment Reporting Information [Line Items]
Total Goodwill and intangible assets, net	$ 1,478	$ 1,502