Revenues - Summary of Disaggregated Revenue by Type and by Segment (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 2,117	$ 2,340
Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	1,002	995
Advertising
Disaggregation of Revenue [Line Items]
Revenues	332	608
Consumer
Disaggregation of Revenue [Line Items]
Revenues	441	387
Real estate
Disaggregation of Revenue [Line Items]
Revenues	235	218
Other
Disaggregation of Revenue [Line Items]
Revenues	107	132
Digital Real Estate Services
Disaggregation of Revenue [Line Items]
Revenues	290	272
Digital Real Estate Services | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	8	10
Digital Real Estate Services | Advertising
Disaggregation of Revenue [Line Items]
Revenues	28	27
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	235	218
Digital Real Estate Services | Other
Disaggregation of Revenue [Line Items]
Revenues	19	17
Subscription Video Services
Disaggregation of Revenue [Line Items]
Revenues	496	514
Subscription Video Services | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	437	451
Subscription Video Services | Advertising
Disaggregation of Revenue [Line Items]
Revenues	50	51
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	9	12
Dow Jones
Disaggregation of Revenue [Line Items]
Revenues	386	382
Dow Jones | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	311	289
Dow Jones | Advertising
Disaggregation of Revenue [Line Items]
Revenues	70	84
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	5	9
Book Publishing
Disaggregation of Revenue [Line Items]
Revenues	458	405
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	441	387
Book Publishing | Real estate
Disaggregation of Revenue [Line Items]
Revenues	0	0
Book Publishing | Other
Disaggregation of Revenue [Line Items]
Revenues	17	18
News Media
Disaggregation of Revenue [Line Items]
Revenues	487	767
News Media | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	246	245
News Media | Advertising
Disaggregation of Revenue [Line Items]
Revenues	184	446
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	$ 57	$ 76