Investments - Schedule of (Losses) Earnings of Equity Affiliates (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Equity (losses) earnings of affiliates		$ (238)	$ 15	$ (253)	$ 23
Foxtel [Member]
Schedule of Equity Method Investments [Line Items]
Equity (losses) earnings of affiliates	[1]	(233)	13	(244)	22
Other Equity Affiliates, Net [Member]
Schedule of Equity Method Investments [Line Items]
Equity (losses) earnings of affiliates		$ (5)	$ 2	$ (9)	$ 1

[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. The write-down is reflected in Equity (losses) earnings of affiliates in the Statements of Operations for the three and six months ended December 31, 2016. Refer to the discussion above for further details. Additionally, in accordance with ASC 350, the Company amortized $18 million and $37 million, respectively, related to excess cost over the Company's proportionate share of its investment's underlying net assets allocated to finite-lived intangible assets during the three and six months ended December 31, 2016, respectively, and $13 million and $25 million in the corresponding periods of fiscal 2016, respectively. Such amortization is reflected in Equity (losses) earnings of affiliates in the Statements of Operations. The increase in amortization expense recognized by the Company in the current year period was offset by a corresponding decrease in amortization expense recognized by Foxtel as certain intangible assets were fully amortized in fiscal 2016.