Segment Information - Reconciliation of Goodwill and Intangible Assets from Segments to Consolidated (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Jun. 30, 2017
Segment Reporting Information [Line Items]
Total goodwill and intangible assets, net	$ 6,198	$ 6,119
News and Information Services [Member]
Segment Reporting Information [Line Items]
Total goodwill and intangible assets, net	2,957	2,952
Book Publishing [Member]
Segment Reporting Information [Line Items]
Total goodwill and intangible assets, net	837	835
Digital Real Estate Services [Member]
Segment Reporting Information [Line Items]
Total goodwill and intangible assets, net	1,489	1,420
Cable Network Programming [Member]
Segment Reporting Information [Line Items]
Total goodwill and intangible assets, net	915	912
Other [Member]
Segment Reporting Information [Line Items]
Total goodwill and intangible assets, net	$ 0	$ 0