Investments - Schedule of Investments (Parenthetical) (Detail) AUD in Millions, $ in Millions				3 Months Ended		6 Months Ended		12 Months Ended
		Jun. 30, 2013 USD ($)	Nov. 30, 2012	Dec. 31, 2016 USD ($)		Dec. 31, 2016 USD ($)		Jun. 30, 2016 USD ($)		Dec. 31, 2016 AUD	Jun. 30, 2016 AUD	Jun. 22, 2016	Jun. 21, 2016
Schedule of Investments [Line Items]
Fair value control premium						10.00%
Foxtel [Member]
Schedule of Investments [Line Items]
Investments written-off				$ 227		$ 227
Equity investment carrying value prior to impairment				$ 1,400		$ 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%				50.00%
Equity method investment carrying value	[1]			$ 1,162		$ 1,162		$ 1,437
Loan receivable from Foxtel				$ 325	[2]	$ 325	[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
APN [Member]
Schedule of Investments [Line Items]
Ownership interest percentage on investment				13.23%		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] (a) During the three months ended December 31, 2016, 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%. In November 2012, the Company acquired CMH, a media investment company that operates in Australia. CMH owned a 25% interest in Foxtel through its 50% interest in FOX SPORTS Australia. The CMH acquisition was accounted for in accordance with ASC 805 "Business Combinations" which requires an acquirer to remeasure its previously held equity interest in an acquiree at its acquisition date fair value and recognize the resulting gain or loss in earnings. The carrying amount of the Company's previously held equity interest in FOX SPORTS Australia, through which the Company held its indirect 25% interest in Foxtel, was revalued to fair value as of the acquisition date, resulting in a step-up and non-cash gain of approximately $1.3 billion for the fiscal year ended June 30, 2013, of which $0.9 billion related to Foxtel. Following the write-down, the carrying value of the Foxtel investment was approximately $1.2 billion at December 31, 2016. 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 ($325 million and $338 million as of December 31, 2016 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.