Description of Business - Additional Information (Detail)	3 Months Ended	0 Months Ended	3 Months Ended
	Dec. 31, 2013 Country	Jul. 02, 2013 Parlophone Label Group	Dec. 31, 2013 WEA Corp.
Description Of Business [Line Items]
Acquisition date		Jul. 01, 2013
Number of countries in which Recorded Music activity conducted	50
Percentage of ownership			80.00%
Number of songwriters and composers	65,000