Revenues - Summary of Disaggregated Revenue by Type and by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 2,457	$ 2,093	$ 7,608	$ 6,331
Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,025	659	3,088	1,947
Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	670	702	2,052	2,101
Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	403	381	1,281	1,220
Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	218	208	693	633
Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	141	143	494	430
News and Information Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,224	1,286	3,729	3,825
News and Information Services [Member] | Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	538		1,593
News and Information Services [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	593		1,801
News and Information Services [Member] | Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0
News and Information Services [Member] | Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0
News and Information Services [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	93		335
Subscription Video Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	539	129	1,666	394
Subscription Video Services [Member] | Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	474		1,455
Subscription Video Services [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	50		162
Subscription Video Services [Member] | Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0
Subscription Video Services [Member] | Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0
Subscription Video Services [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	15		49
Book Publishing [Member]
Disaggregation of Revenue [Line Items]
Revenues	421	398	1,335	1,268
Book Publishing [Member] | Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0
Book Publishing [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0
Book Publishing [Member] | Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	403		1,281
Book Publishing [Member] | Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0
Book Publishing [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	18		54
Digital Real Estate Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	272	$ 279	876	$ 842
Digital Real Estate Services [Member] | Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	12		39
Digital Real Estate Services [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	27		89
Digital Real Estate Services [Member] | Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0
Digital Real Estate Services [Member] | Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	218		693
Digital Real Estate Services [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	15		55
Other Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	1		2
Other Services [Member] | Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	1		1
Other Services [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0
Other Services [Member] | Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0
Other Services [Member] | Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0
Other Services [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 0		$ 1