Investments - Schedule of Earnings of Equity Affiliates (Parenthetical) (Detail) (Foxtel [Member], USD $) In Millions, unless otherwise specified			3 Months Ended
Sep. 30, 2013	Nov. 30, 2012	Sep. 30, 2013 Equity Earnings [Member]	Nov. 30, 2012 Minimum [Member] Consolidated Media Holdings Ltd. [Member]	Nov. 30, 2012 Maximum [Member] Consolidated Media Holdings Ltd. [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment ownership percentage	50.00%	50.00%		25.00%	50.00%
Amortization of intangible asset			$ 16

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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