Revenues - Summary of Disaggregated Revenue by Type and by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 2,479	$ 2,627	$ 4,819	$ 5,151
Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	990	1,029	1,985	2,063
Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	677	718	1,285	1,382
Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	421	478	808	878
Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	242	248	460	475
Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	149	154	281	353
News and Information Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,241	1,257	2,390	2,505
News and Information Services [Member] | Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	541	526	1,075	1,055
News and Information Services [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	599	632	1,129	1,208
News and Information Services [Member] | Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
News and Information Services [Member] | Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
News and Information Services [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	101	99	186	242
Subscription Video Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	501	562	1,015	1,127
Subscription Video Services [Member] | Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	439	490	890	981
Subscription Video Services [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	53	55	104	112
Subscription Video Services [Member] | Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Subscription Video Services [Member] | Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Subscription Video Services [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	9	17	21	34
Book Publishing [Member]
Disaggregation of Revenue [Line Items]
Revenues	442	496	847	914
Book Publishing [Member] | Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Book Publishing [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Book Publishing [Member] | Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	421	478	808	878
Book Publishing [Member] | Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Book Publishing [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	21	18	39	36
Digital Real Estate Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	294	311	566	604
Digital Real Estate Services [Member] | Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	9	13	19	27
Digital Real Estate Services [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	25	31	52	62
Digital Real Estate Services [Member] | Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Digital Real Estate Services [Member] | Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	242	248	460	475
Digital Real Estate Services [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	18	19	35	40
Other Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	1	1	1	1
Other Services [Member] | Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	1	0	1	0
Other Services [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Other Services [Member] | Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Other Services [Member] | Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Other Services [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 0	$ 1	$ 0	$ 1