Goodwill and Other Intangible Assets - Balances of Other Intangible Assets Excluding Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	Apr. 26, 2014	Apr. 27, 2013
Goodwill And Intangible Assets Disclosure [Abstract]
Copyrights, trade names and trademarks	$ 76,464	$ 76,464
Distribution agreement, customer lists and other	286,365	235,781
Less: Accumulated amortization	(13,967)	(115,589)
Net amortized intangible assets	146,686	120,192
Total identifiable intangible assets, net	$ 223,150	$ 196,656

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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-Section 50

-Paragraph 2

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-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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