Revenues - Summary of Disaggregated Revenue by Type and by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 2,335	$ 2,266	$ 6,866	$ 7,085
Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	1,076	966	3,108	2,951
Advertising
Disaggregation of Revenue [Line Items]
Revenues	374	576	1,154	1,861
Consumer
Disaggregation of Revenue [Line Items]
Revenues	472	396	1,436	1,204
Real estate
Disaggregation of Revenue [Line Items]
Revenues	291	209	807	669
Other
Disaggregation of Revenue [Line Items]
Revenues	122	119	361	400
Digital Real Estate Services
Disaggregation of Revenue [Line Items]
Revenues	351	261	980	827
Digital Real Estate Services | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	6	9	22	28
Digital Real Estate Services | Advertising
Disaggregation of Revenue [Line Items]
Revenues	31	25	89	77
Digital Real Estate Services | Consumer
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Digital Real Estate Services | Real estate
Disaggregation of Revenue [Line Items]
Revenues	291	209	807	669
Digital Real Estate Services | Other
Disaggregation of Revenue [Line Items]
Revenues	23	18	62	53
Subscription Video Services
Disaggregation of Revenue [Line Items]
Revenues	523	462	1,530	1,477
Subscription Video Services | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	469	414	1,352	1,304
Subscription Video Services | Advertising
Disaggregation of Revenue [Line Items]
Revenues	46	40	151	144
Subscription Video Services | Consumer
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Subscription Video Services | Real estate
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Subscription Video Services | Other
Disaggregation of Revenue [Line Items]
Revenues	8	8	27	29
Dow Jones
Disaggregation of Revenue [Line Items]
Revenues	421	397	1,253	1,209
Dow Jones | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	329	303	959	888
Dow Jones | Advertising
Disaggregation of Revenue [Line Items]
Revenues	85	84	270	288
Dow Jones | Consumer
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Dow Jones | Real estate
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Dow Jones | Other
Disaggregation of Revenue [Line Items]
Revenues	7	10	24	33
Book Publishing
Disaggregation of Revenue [Line Items]
Revenues	490	412	1,492	1,259
Book Publishing | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Book Publishing | Advertising
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Book Publishing | Consumer
Disaggregation of Revenue [Line Items]
Revenues	472	396	1,436	1,204
Book Publishing | Real estate
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Book Publishing | Other
Disaggregation of Revenue [Line Items]
Revenues	18	16	56	55
News Media
Disaggregation of Revenue [Line Items]
Revenues	550	733	1,610	2,311
News Media | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	272	240	775	730
News Media | Advertising
Disaggregation of Revenue [Line Items]
Revenues	212	427	644	1,352
News Media | Consumer
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
News Media | Real estate
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
News Media | Other
Disaggregation of Revenue [Line Items]
Revenues	66	66	191	229
Other
Disaggregation of Revenue [Line Items]
Revenues	0	1	1	2
Other | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	1
Other | Advertising
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Other | Consumer
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Other | Real estate
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Other | Other
Disaggregation of Revenue [Line Items]
Revenues	$ 0	$ 1	$ 1	$ 1