Goodwill And Intangible Assets (Changes In Goodwill For Each Reportable Segment) (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Jun. 30, 2012
Goodwill [Line Items]
Balance at Beginning	$ 1,372	[1]
Acquisitions	5
Dispositions
Other adjustments	2
Balance at Ending	1,379
Recorded Music
Goodwill [Line Items]
Balance at Beginning	908	[1]
Acquisitions	5
Dispositions
Other adjustments	2
Balance at Ending	915
Music Publishing
Goodwill [Line Items]
Balance at Beginning	464	[1]
Acquisitions
Dispositions
Other adjustments
Balance at Ending	$ 464

[1] During the three months ended December 31, 2011 amounts were adjusted as a result of changes in the final purchase price allocation related to the Merger.