Acquisition of Parlophone Label Group - Components of Intangible Assets Identified and Useful Lives (Detail) (Recorded Music, USD $) In Millions, unless otherwise specified	6 Months Ended
Mar. 31, 2014
Trademarks and Trade Names
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Indefinite lived intangible assets, Value	$ 17
Catalog
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Finite lived intangible assets, Value	442
Intangible assets, Useful Life	13 years
Artist Contracts
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Finite lived intangible assets, Value	$ 305
Intangible assets, Useful Life	10 years

Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

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- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 55

-Paragraph 37

-URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464

+ Details

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Period Type:	duration

- Details

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