Organization and Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2014 Songs
Goodwill And Intangible Assets Disclosure [Abstract]
Estimated number of songs in Copyright Catalogue	25,000
Number of songs producing royalty income	1,600
Number of copyrighted songs in the top 50 list	50
Songs listed in catalogue for top earnings	EMI has provided the Trust with a listing of the top 50 earning songs in the Catalogue during the 2013 calendar year (the “Top 50 Songs”), together with certain copyright information with respect to each of the Top 50 Songs (the “2013 Listing”). A copy of the 2013 Listing, as provided by EMI, is included in the Trust’s annual report on Form 10-K for the fiscal year ended December 31, 2013. The 2013 Listing does not include any information regarding Copyrighted Songs for the 2014 calendar year.