SEGMENT INFORMATION - Reconciliation of Depreciation and Amortization, Capital Expenditures from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Segment Reporting Information [Line Items]
Total Depreciation and amortization	$ 122	$ 114	$ 357	$ 339
Total Capital expenditures	100	92	280	250
Dow Jones
Segment Reporting Information [Line Items]
Total Depreciation and amortization	41	40	122	117
Total Capital expenditures	26	30	64	68
Digital Real Estate Services
Segment Reporting Information [Line Items]
Total Depreciation and amortization	39	35	114	107
Total Capital expenditures	39	39	114	114
Book Publishing
Segment Reporting Information [Line Items]
Total Depreciation and amortization	15	14	44	40
Total Capital expenditures	7	2	21	10
News Media
Segment Reporting Information [Line Items]
Total Depreciation and amortization	26	24	74	72
Total Capital expenditures	24	21	72	58
Other
Segment Reporting Information [Line Items]
Total Depreciation and amortization	1	1	3	3
Total Capital expenditures	$ 4	$ 0	$ 9	$ 0