SEGMENT INFORMATION - Reconciliation of Depreciation and Amortization, Capital Expenditures from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Segment Reporting Information [Line Items]
Total Depreciation and amortization	$ 118	$ 113	$ 235	$ 225
Total Capital expenditures	99	82	180	157
Dow Jones
Segment Reporting Information [Line Items]
Total Depreciation and amortization	41	38	81	77
Total Capital expenditures	23	22	38	38
Digital Real Estate Services
Segment Reporting Information [Line Items]
Total Depreciation and amortization	38	36	75	72
Total Capital expenditures	37	36	75	75
Book Publishing
Segment Reporting Information [Line Items]
Total Depreciation and amortization	14	13	29	26
Total Capital expenditures	6	4	14	7
News Media
Segment Reporting Information [Line Items]
Total Depreciation and amortization	24	25	48	48
Total Capital expenditures	30	20	48	37
Other
Segment Reporting Information [Line Items]
Total Depreciation and amortization	1	1	2	2
Total Capital expenditures	$ 3	$ 0	$ 5	$ 0