Investments - Schedule of Summarized Financial Information (Parenthetical) (Detail) (Foxtel [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
Sep. 30, 2013	Sep. 30, 2012
Foxtel [Member]
Schedule of Equity Method Investments [Line Items]
Depreciation and amortization	$ 86	$ 116
Operating income before depreciation and amortization	$ 221	$ 216

Equity method investment summarized financial information operating income loss before depreciation and amortization.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration