Acquisition of Parlophone Label Group - Components of Intangible Assets Identified and Useful Lives (Detail) (Recorded Music [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2013
Trademarks and Trade Names [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Indefinite lived intangible assets, Value	$ 17
Catalog [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Finite lived intangible assets, Value	442
Intangible assets, Useful Life	13 years
Artist Contracts [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Finite lived intangible assets, Value	$ 305
Intangible assets, Useful Life	10 years