Investments - Schedule of Earnings of Equity Affiliates (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Equity earnings of affiliates		$ 15	$ 16	$ 23	$ 41
Foxtel [Member]
Schedule of Equity Method Investments [Line Items]
Equity earnings of affiliates	[1]	13	15	22	40
Other Equity Affiliates, Net [Member]
Schedule of Equity Method Investments [Line Items]
Equity earnings of affiliates		$ 2	$ 1	$ 1	$ 1

[1] In accordance with ASC 350, the Company amortized $13 million and $25 million 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, 2015, respectively, and $14 million and $30 million in the corresponding periods of fiscal 2015, respectively. Such amortization is reflected in Equity earnings of affiliates in the Statements of Operations.