REVENUES - Summary of Disaggregated Revenue by Type and by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Total Revenues	$ 9,028	$ 8,452	$ 8,252
Circulation and subscription
Disaggregation of Revenue [Line Items]
Total Revenues	3,203	3,009	2,909
Advertising
Disaggregation of Revenue [Line Items]
Total Revenues	1,391	1,367	1,400
Consumer
Disaggregation of Revenue [Line Items]
Total Revenues	2,185	2,047	2,000
Real estate
Disaggregation of Revenue [Line Items]
Total Revenues	1,571	1,410	1,284
Other
Disaggregation of Revenue [Line Items]
Total Revenues	678	619	659
Dow Jones
Disaggregation of Revenue [Line Items]
Total Revenues	2,497	2,331	2,231
Dow Jones | Circulation and subscription
Disaggregation of Revenue [Line Items]
Total Revenues	2,020	1,884	1,771
Dow Jones | Advertising
Disaggregation of Revenue [Line Items]
Total Revenues	418	396	405
Dow Jones | Consumer
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Dow Jones | Real estate
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Dow Jones | Other
Disaggregation of Revenue [Line Items]
Total Revenues	59	51	55
Digital Real Estate Services
Disaggregation of Revenue [Line Items]
Total Revenues	2,016	1,802	1,658
Digital Real Estate Services | Circulation and subscription
Disaggregation of Revenue [Line Items]
Total Revenues	8	7	10
Digital Real Estate Services | Advertising
Disaggregation of Revenue [Line Items]
Total Revenues	169	151	136
Digital Real Estate Services | Consumer
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Digital Real Estate Services | Real estate
Disaggregation of Revenue [Line Items]
Total Revenues	1,571	1,410	1,284
Digital Real Estate Services | Other
Disaggregation of Revenue [Line Items]
Total Revenues	268	234	228
Book Publishing
Disaggregation of Revenue [Line Items]
Total Revenues	2,288	2,149	2,093
Book Publishing | Circulation and subscription
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Book Publishing | Advertising
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Book Publishing | Consumer
Disaggregation of Revenue [Line Items]
Total Revenues	2,185	2,047	2,000
Book Publishing | Real estate
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Book Publishing | Other
Disaggregation of Revenue [Line Items]
Total Revenues	103	102	93
News Media
Disaggregation of Revenue [Line Items]
Total Revenues	2,227	2,170	2,270
News Media | Circulation and subscription
Disaggregation of Revenue [Line Items]
Total Revenues	1,175	1,118	1,128
News Media | Advertising
Disaggregation of Revenue [Line Items]
Total Revenues	804	820	859
News Media | Consumer
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
News Media | Real estate
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
News Media | Other
Disaggregation of Revenue [Line Items]
Total Revenues	$ 248	$ 232	$ 283