Investments - Schedule of Summarized Financial Information (Detail) (Foxtel [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
Foxtel [Member]
Schedule of Equity Method Investments [Line Items]
Revenues	$ 1,408		$ 1,457
Operating income	255	[1]	260	[1]
Net income	$ 140		$ 122

[1] Includes Depreciation and amortization of $168 million and $171 million for the six months ended December 31, 2014 and 2013, respectively. Operating income before depreciation and amortization was $423 million and $431 million for the six months ended December 31, 2014 and 2013, respectively.