REVENUES - Schedule of Disaggregated Revenue by Type and by Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Disaggregation of Revenue [Line Items]
Revenues	$ 2,362	$ 2,238	$ 4,506	$ 4,334
Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	792	745	1,574	1,488
Advertising
Disaggregation of Revenue [Line Items]
Revenues	389	385	706	706
Consumer
Disaggregation of Revenue [Line Items]
Revenues	607	572	1,117	1,093
Real estate
Disaggregation of Revenue [Line Items]
Revenues	401	377	771	734
Other
Disaggregation of Revenue [Line Items]
Revenues	173	159	338	313
Dow Jones
Disaggregation of Revenue [Line Items]
Revenues	648	600	1,234	1,152
Dow Jones | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	497	461	988	920
Dow Jones | Advertising
Disaggregation of Revenue [Line Items]
Revenues	133	121	218	206
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	18	18	28	26
Digital Real Estate Services
Disaggregation of Revenue [Line Items]
Revenues	511	473	990	930
Digital Real Estate Services | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	2	2	4	4
Digital Real Estate Services | Advertising
Disaggregation of Revenue [Line Items]
Revenues	40	35	81	73
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	401	377	771	734
Digital Real Estate Services | Other
Disaggregation of Revenue [Line Items]
Revenues	68	59	134	119
Book Publishing
Disaggregation of Revenue [Line Items]
Revenues	633	595	1,167	1,141
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	607	572	1,117	1,093
Book Publishing | Real estate
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Book Publishing | Other
Disaggregation of Revenue [Line Items]
Revenues	26	23	50	48
News Media
Disaggregation of Revenue [Line Items]
Revenues	570	570	1,115	1,111
News Media | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	293	282	582	564
News Media | Advertising
Disaggregation of Revenue [Line Items]
Revenues	216	229	407	427
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	61	59	126	120
Other
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Other | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
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	$ 0	$ 0	$ 0