Revenues - Summary of Disaggregated Revenue by Type and by Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 9,008	$ 10,074	$ 9,024
Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	3,857	4,104	3,021
Advertising
Disaggregation of Revenue [Line Items]
Revenues	2,193	2,738	2,856
Consumer
Disaggregation of Revenue [Line Items]
Revenues	1,593	1,679	1,664
Real estate
Disaggregation of Revenue [Line Items]
Revenues	862	908	858
Other
Disaggregation of Revenue [Line Items]
Revenues	503	645	625
Digital Real Estate Services
Disaggregation of Revenue [Line Items]
Revenues	1,065	1,159	1,141
Digital Real Estate Services | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	36	49
Digital Real Estate Services | Advertising
Disaggregation of Revenue [Line Items]
Revenues	98	122
Digital Real Estate Services | Consumer
Disaggregation of Revenue [Line Items]
Revenues	0	0
Digital Real Estate Services | Real estate
Disaggregation of Revenue [Line Items]
Revenues	862	908
Digital Real Estate Services | Other
Disaggregation of Revenue [Line Items]
Revenues	69	80
Subscription Video Services
Disaggregation of Revenue [Line Items]
Revenues	1,884	2,202	1,004
Subscription Video Services | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	1,673	1,926
Subscription Video Services | Advertising
Disaggregation of Revenue [Line Items]
Revenues	174	215
Subscription Video Services | Consumer
Disaggregation of Revenue [Line Items]
Revenues	0	0
Subscription Video Services | Real estate
Disaggregation of Revenue [Line Items]
Revenues	0	0
Subscription Video Services | Other
Disaggregation of Revenue [Line Items]
Revenues	37	61
Dow Jones
Disaggregation of Revenue [Line Items]
Revenues	1,590	1,549	1,500
Dow Jones | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	1,191	1,120
Dow Jones | Advertising
Disaggregation of Revenue [Line Items]
Revenues	359	393
Dow Jones | Consumer
Disaggregation of Revenue [Line Items]
Revenues	0	0
Dow Jones | Real estate
Disaggregation of Revenue [Line Items]
Revenues	0	0
Dow Jones | Other
Disaggregation of Revenue [Line Items]
Revenues	40	36
Book Publishing
Disaggregation of Revenue [Line Items]
Revenues	1,666	1,754	1,758
Book Publishing | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	0	0
Book Publishing | Advertising
Disaggregation of Revenue [Line Items]
Revenues	0	0
Book Publishing | Consumer
Disaggregation of Revenue [Line Items]
Revenues	1,593	1,679
Book Publishing | Real estate
Disaggregation of Revenue [Line Items]
Revenues	0	0
Book Publishing | Other
Disaggregation of Revenue [Line Items]
Revenues	73	75
News Media
Disaggregation of Revenue [Line Items]
Revenues	2,801	3,407	$ 3,619
News Media | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	956	1,008
News Media | Advertising
Disaggregation of Revenue [Line Items]
Revenues	1,562	2,007
News Media | Consumer
Disaggregation of Revenue [Line Items]
Revenues	0	0
News Media | Real estate
Disaggregation of Revenue [Line Items]
Revenues	0	0
News Media | Other
Disaggregation of Revenue [Line Items]
Revenues	283	392
Other
Disaggregation of Revenue [Line Items]
Revenues	2	3
Other | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	1	1
Other | Advertising
Disaggregation of Revenue [Line Items]
Revenues	0	1
Other | Consumer
Disaggregation of Revenue [Line Items]
Revenues	0	0
Other | Real estate
Disaggregation of Revenue [Line Items]
Revenues	0	0
Other | Other
Disaggregation of Revenue [Line Items]
Revenues	$ 1	$ 1