REVENUES - Schedule of Disaggregated Revenue by Type and by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Revenues	$ 2,185	$ 2,009	$ 6,691	$ 6,343
Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	809	755	2,383	2,243
Advertising
Disaggregation of Revenue [Line Items]
Revenues	322	308	1,028	1,014
Consumer
Disaggregation of Revenue [Line Items]
Revenues	530	492	1,647	1,585
Real estate
Disaggregation of Revenue [Line Items]
Revenues	365	318	1,136	1,052
Other
Disaggregation of Revenue [Line Items]
Revenues	159	136	497	449
Dow Jones
Disaggregation of Revenue [Line Items]
Revenues	619	575	1,853	1,727
Dow Jones | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	511	478	1,499	1,398
Dow Jones | Advertising
Disaggregation of Revenue [Line Items]
Revenues	91	86	309	292
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	17	11	45	37
Digital Real Estate Services
Disaggregation of Revenue [Line Items]
Revenues	473	406	1,463	1,336
Digital Real Estate Services | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	2	1	6	5
Digital Real Estate Services | Advertising
Disaggregation of Revenue [Line Items]
Revenues	40	36	121	109
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	365	318	1,136	1,052
Digital Real Estate Services | Other
Disaggregation of Revenue [Line Items]
Revenues	66	51	200	170
Book Publishing
Disaggregation of Revenue [Line Items]
Revenues	555	514	1,722	1,655
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	530	492	1,647	1,585
Book Publishing | Real estate
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Book Publishing | Other
Disaggregation of Revenue [Line Items]
Revenues	25	22	75	70
News Media
Disaggregation of Revenue [Line Items]
Revenues	538	514	1,653	1,625
News Media | Circulation and subscription
Disaggregation of Revenue [Line Items]
Revenues	296	276	878	840
News Media | Advertising
Disaggregation of Revenue [Line Items]
Revenues	191	186	598	613
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	51	52	177	172
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