Segment Information - Reconciliation of Revenue and Segment EBITDA from Segments to Consolidated (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenues	$ 2,414	$ 2,479	$ 4,531	$ 4,819
Depreciation and amortization	(167)	(162)	(331)	(324)
Impairment and restructuring charges	(23)	(29)	(63)	(326)
Equity losses of affiliates	(3)	(3)	(4)	(5)
Interest expense, net	(12)	(8)	(20)	(4)
Other, net	54	2	71	6
Income (loss) before income tax expense	346	155	418	(77)
Income tax expense	(85)	(52)	(110)	(31)
Net income (loss)	261	103	308	(108)
Digital Real Estate Services
Segment Reporting Information [Line Items]
Revenues	339	294	629	566
Total Segment EBITDA	142	118	261	200
Subscription Video Services
Segment Reporting Information [Line Items]
Revenues	511	501	1,007	1,015
Total Segment EBITDA	124	70	202	151
Dow Jones
Segment Reporting Information [Line Items]
Revenues	446	430	832	812
Total Segment EBITDA	109	76	181	125
Book Publishing
Segment Reporting Information [Line Items]
Revenues	544	442	1,002	847
Total Segment EBITDA	104	63	175	112
News Media
Segment Reporting Information [Line Items]
Revenues	573	811	1,060	1,578
Total Segment EBITDA	66	66	44	73
Other
Segment Reporting Information [Line Items]
Revenues	1	1	1	1
Total Segment EBITDA	$ (48)	$ (38)	$ (98)	$ (85)