Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)		12 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Significant Accounting Policies [Line Items]
Cash and cash equivalents		$ 2,034,000,000	$ 2,016,000,000	$ 1,832,000,000	$ 1,951,000,000
Insignificant influence on investments		Generally less than a 20% ownership interest
Unearned advance write-off policy		Recovery and a provision is established to write-off the unearned advance, usually between 6 and 12 months after publication.
Advertising and promotional expenses		$ 663,000,000	587,000,000	$ 607,000,000
Available-for-sale securities		93,000,000
Available-for-sale securities, net unrealized gains		16,000,000
Cost method investments	[1]	127,000,000	219,000,000
Wireless Group plc [Member]
Significant Accounting Policies [Line Items]
Restricted cash		$ 0	0
Minimum [Member]
Significant Accounting Policies [Line Items]
Interest owned to exercise significant influence		20.00%
Property, plant and equipment, useful life		3 years
Maximum [Member]
Significant Accounting Policies [Line Items]
Interest owned to exercise significant influence		50.00%
Property, plant and equipment, useful life		50 years
Internal Use Software [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		2 years
Internal Use Software [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		10 years
REA Group [Member]
Significant Accounting Policies [Line Items]
Cash and cash equivalents		$ 86,000,000	$ 276,000,000

[1] Cost method investments are primarily comprised of certain investments in China as of June 30, 2018. During the third quarter of fiscal 2018, the Company sold its investment in SEEKAsia Limited for $122 million in cash and recognized a $32 million gain in Other, net. See Note 21-Additional Financial Information.