Investments - Schedule of Investments (Parenthetical) (Detail) AUD in Millions, $ in Millions				1 Months Ended	3 Months Ended	9 Months Ended		12 Months Ended
		Jun. 30, 2013 USD ($)	Nov. 30, 2012	Jan. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Mar. 31, 2017 USD ($)		Jun. 30, 2016 USD ($)		Mar. 31, 2017 AUD	Jun. 30, 2016 AUD	Jun. 22, 2016	Jun. 21, 2016
Schedule of Investments [Line Items]
Fair value control premium						10.00%
Elara [Member]
Schedule of Investments [Line Items]
Equity method investment ownership percentage				23.00%
Foxtel [Member]
Schedule of Investments [Line Items]
Investments written-off					$ 227	$ 227
Equity investment carrying value prior to impairment					$ 1,400
Discount rates					9.00%
Long-term growth rates					2.50%
Fair value control premium					10.00%
Equity method investment ownership percentage	[1]					50.00%				50.00%
Loan receivable from Foxtel						$ 344	[2]	$ 338	[2]	AUD 451	AUD 451
Foxtel [Member] | Consolidated Media Holdings Ltd. [Member]
Schedule of Investments [Line Items]
Business acquisition date			Nov. 30, 2012
Equity method investment ownership percentage			25.00%
Fox Sports [Member] | Consolidated Media Holdings Ltd. [Member]
Schedule of Investments [Line Items]
Equity method investment ownership percentage			50.00%
Business acquisition recognized gain resulting from remeasurement of previously held equity interest		$ 1,300
Ownership percentage			25.00%
Fox Sports Foxtel CMH [Member]
Schedule of Investments [Line Items]
Business acquisition recognized gain resulting from remeasurement of previously held equity interest		$ 900
REA Group [Member] | Elara [Member]
Schedule of Investments [Line Items]
Interest acquired				15.00%
Cash paid for additional investment				$ 50
APN [Member]
Schedule of Investments [Line Items]
Ownership interest percentage on investment						13.23%		14.99%		13.23%	14.99%
Purchase price of ownership interest					$ 21			$ 20
Foxtel Shareholder Notes [Member]
Schedule of Investments [Line Items]
Maturity date of subordinated note						Jul. 15, 2027
Foxtel Shareholder Notes [Member] | Foxtel [Member]
Schedule of Investments [Line Items]
Percentage of loan receivable												10.50%	12.00%

[1] During the second quarter of fiscal 2017, the Company recognized a $227 million non-cash write-down of the carrying value of its investment in Foxtel to fair value. As a result of Foxtel's performance in the first half of fiscal 2017 and the competitive operating environment in the Australian pay-TV market, the Company revised its future outlook for the business, which resulted in a reduction in expected future cash flows. Based on the revised projections, the Company determined that the fair value of its investment in Foxtel declined below its $1.4 billion carrying value, which includes the gain recognized in connection with the acquisition of Consolidated Media Holdings Ltd. ("CMH"). Significant unobservable inputs utilized in the income approach valuation method were a discount rate of 9.0% and a long-term growth rate of 2.5%. Significant unobservable inputs utilized in the market approach valuation methods were EBITDA multiples from guideline public companies operating in similar industries and a control premium of 10%. Any significant shortfall of the expected future cash flows of Foxtel could result in additional write downs for which non-cash charges would be required.

[2] In May 2012, Foxtel purchased Austar United Communications Ltd. The transaction was funded by Foxtel bank debt and pro rata capital contributions made by Foxtel shareholders in the form of subordinated shareholder notes based on their respective ownership interests. The Company's share of the subordinated shareholder notes was approximately A$451 million ($344 million and $338 million as of March 31, 2017 and June 30, 2016, respectively). The subordinated shareholder notes can be repaid beginning in July 2022 provided that Foxtel's senior debt has been repaid. The subordinated shareholder notes have a maturity date of July 15, 2027, with interest payable on June 30 each year and at maturity. On June 22, 2016, Foxtel and Foxtel's shareholders agreed to modify the terms of the loan receivable to reduce the interest rate from 12% to 10.5%, to more closely align with current market rates. Upon maturity, the principal advanced will be repayable.