SEGMENT INFORMATION - Reconciliation of Depreciation and Amortization, Capital Expenditures from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Total Depreciation and amortization	$ 117	$ 112
Total Capital expenditures	81	75
Dow Jones
Segment Reporting Information [Line Items]
Total Depreciation and amortization	40	39
Total Capital expenditures	15	16
Digital Real Estate Services
Segment Reporting Information [Line Items]
Total Depreciation and amortization	37	36
Total Capital expenditures	38	39
Book Publishing
Segment Reporting Information [Line Items]
Total Depreciation and amortization	15	13
Total Capital expenditures	8	3
News Media
Segment Reporting Information [Line Items]
Total Depreciation and amortization	24	23
Total Capital expenditures	18	17
Other
Segment Reporting Information [Line Items]
Total Depreciation and amortization	1	1
Total Capital expenditures	$ 2	$ 0