REVENUES - Summary of Disaggregated Revenue by Type and by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Total Revenues	$ 8,452	$ 8,252	$ 8,012
Circulation and subscription
Disaggregation of Revenue [Line Items]
Total Revenues	3,009	2,909	2,818
Advertising
Disaggregation of Revenue [Line Items]
Total Revenues	1,367	1,400	1,473
Consumer
Disaggregation of Revenue [Line Items]
Total Revenues	2,047	2,000	1,899
Real estate
Disaggregation of Revenue [Line Items]
Total Revenues	1,410	1,284	1,189
Other
Disaggregation of Revenue [Line Items]
Total Revenues	619	659	633
Dow Jones
Disaggregation of Revenue [Line Items]
Total Revenues	2,331	2,231	2,153
Dow Jones \| Circulation and subscription
Disaggregation of Revenue [Line Items]
Total Revenues	1,884	1,771	1,689
Dow Jones \| Advertising
Disaggregation of Revenue [Line Items]
Total Revenues	396	405	413
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	51	55	51
Digital Real Estate Services
Disaggregation of Revenue [Line Items]
Total Revenues	1,802	1,658	1,539
Digital Real Estate Services \| Circulation and subscription
Disaggregation of Revenue [Line Items]
Total Revenues	7	10	12
Digital Real Estate Services \| Advertising
Disaggregation of Revenue [Line Items]
Total Revenues	151	136	140
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	1,410	1,284	1,189
Digital Real Estate Services \| Other
Disaggregation of Revenue [Line Items]
Total Revenues	234	228	198
Book Publishing
Disaggregation of Revenue [Line Items]
Total Revenues	2,149	2,093	1,979
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	2,047	2,000	1,899
Book Publishing \| Real estate
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Book Publishing \| Other
Disaggregation of Revenue [Line Items]
Total Revenues	102	93	80
News Media
Disaggregation of Revenue [Line Items]
Total Revenues	2,170	2,270	2,341
News Media \| Circulation and subscription
Disaggregation of Revenue [Line Items]
Total Revenues	1,118	1,128	1,117
News Media \| Advertising
Disaggregation of Revenue [Line Items]
Total Revenues	820	859	920
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	232	283	304
Other
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Other \| Circulation and subscription
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Other \| Advertising
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Other \| Consumer
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Other \| Real estate
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Other \| Other
Disaggregation of Revenue [Line Items]
Total Revenues	$ 0	$ 0	$ 0