Investments - Schedule of Investments (Parenthetical) (Detail) $ in Millions, $ in Millions			3 Months Ended
	Sep. 28, 2017 USD ($)	Sep. 28, 2017 AUD ($)	Mar. 31, 2018 USD ($)	Jun. 30, 2018 USD ($)		Apr. 30, 2018	Jun. 30, 2017 USD ($)		Jun. 30, 2017 AUD ($)
Schedule of Investments [Line Items]
Loan receivable from Foxtel				$ 0			$ 370
Foxtel [Member]
Schedule of Investments [Line Items]
Loan receivable from Foxtel				$ 0	[1]		$ 370	[1]	$ 481
Equity method investment additional capital contribution	$ 388	$ 494
New Foxtel [Member]
Schedule of Investments [Line Items]
Ownership interest						65.00%
Telstra [Member] | New Foxtel [Member]
Schedule of Investments [Line Items]
Ownership interest held by minority interest						35.00%
SEEK Asia Limited [Member]
Schedule of Investments [Line Items]
Proceeds from sale of investment			$ 122
Gain on sale of investment			$ 32

[1] Following completion of the Transaction in April 2018, News Corp owns a 65% interest in new Foxtel, and Telstra owns the remaining 35%. Consequently, the Company ceased accounting for Foxtel as an equity method investment and began consolidating its results in the fourth quarter of fiscal 2018. See Note 3-Acquisitions, Disposals and Other Transactions.