Investments - Schedule of Summarized Financial Information (Detail) (Foxtel [Member], USD $) In Millions, unless otherwise specified	9 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Foxtel [Member]
Schedule of Equity Method Investments [Line Items]
Revenues	$ 2,028		$ 2,154
Operating income	343	[1]	392	[1]
Net income	$ 184		$ 198

[1] Includes Depreciation and amortization of $243 million and $263 million for the nine months ended March 31, 2015 and 2014, respectively. Operating income before depreciation and amortization was $586 million and $655 million for the nine months ended March 31, 2015 and 2014, respectively.