Revenues - Summary of Cumulative Effect and Impact of Adoption ASC 606 and ASC 605 (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Jul. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									$ 10,074	$ 9,024	$ 8,139
Operating expenses and Selling, general and administrative									(8,830)
Net income	$ (42)	$ 23	$ 119	$ 128	$ (355)	$ (1,110)	$ (66)	$ 87	228	(1,444)	(643)
Receivables, net	1,544				1,612				1,544	1,612		$ 1,812
Other current assets	515				372				515	372		368
Deferred income tax assets	269				279				269	279		281
Other non-current assets	930				831				930	831		923
Deferred revenue	428				516				428	516		510
Other current liabilities	724				372				724	372		566
Deferred income tax liabilities	295				389				295	389		400
Other non-current liabilities	495				430				495	430		501
Accumulated deficit	$ (1,979)				$ (2,163)				(1,979)	(2,163)		(2,143)
Circulation and Subscription [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									4,104	3,021	2,470
Advertising [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									2,738	2,856	2,905
Consumer [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									1,679	1,664	1,573
Real Estate [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									908	858	696
Other [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									645	$ 625	$ 495
ASC 605 [Member] | Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									10,146
Operating expenses and Selling, general and administrative									(8,925)
Net income									212
Receivables, net												1,612
Other current assets												372
Deferred income tax assets												279
Other non-current assets												831
Deferred revenue												516
Other current liabilities												372
Deferred income tax liabilities												389
Other non-current liabilities												430
Accumulated deficit												(2,163)
ASC 605 [Member] | Accounting Standards Update 2014-09 [Member] | Circulation and Subscription [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									4,092
ASC 605 [Member] | Accounting Standards Update 2014-09 [Member] | Advertising [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									2,743
ASC 605 [Member] | Accounting Standards Update 2014-09 [Member] | Consumer [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									1,744
ASC 605 [Member] | Accounting Standards Update 2014-09 [Member] | Real Estate [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									908
ASC 605 [Member] | Accounting Standards Update 2014-09 [Member] | Other [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									659
ASC 606 [Member] | Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									(72)
Operating expenses and Selling, general and administrative									95
Net income									16
Receivables, net												200
Other current assets												(4)
Deferred income tax assets												2
Other non-current assets												92
Deferred revenue												(6)
Other current liabilities												194
Deferred income tax liabilities												11
Other non-current liabilities												71
Accumulated deficit												$ 20
ASC 606 [Member] | Accounting Standards Update 2014-09 [Member] | Circulation and Subscription [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									12
ASC 606 [Member] | Accounting Standards Update 2014-09 [Member] | Advertising [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									(5)
ASC 606 [Member] | Accounting Standards Update 2014-09 [Member] | Consumer [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									(65)
ASC 606 [Member] | Accounting Standards Update 2014-09 [Member] | Real Estate [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									0
ASC 606 [Member] | Accounting Standards Update 2014-09 [Member] | Other [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Revenues									$ (14)