Goodwill and Other Intangible Assets - Balances of Other Intangible Assets Excluding Goodwill (Details) - USD ($) $ in Thousands	Apr. 28, 2018	Apr. 29, 2017
Unamortized - indefinite lived:
Copyrights, trade names and trademarks	$ 29,900	$ 29,900
Amortized - definite lived:
Gross	540,787	536,872
Accumulated Amortization	(181,263)	(141,336)
Net	359,524	395,536
Total identifiable intangible assets, gross	570,687	566,772
Total amortized intangible assets	389,424	425,436
Customer relationships
Amortized - definite lived:
Gross	355,488	353,237
Accumulated Amortization	(91,374)	(67,483)
Net	264,114	285,754
Trade names and trademarks
Amortized - definite lived:
Gross	129,973	129,426
Accumulated Amortization	(49,545)	(35,580)
Net	80,428	93,846
Developed technology and other
Amortized - definite lived:
Gross	55,326	54,209
Accumulated Amortization	(40,344)	(38,273)
Net	$ 14,982	$ 15,936

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=66006027&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=66006027&loc=d3e16323-109275

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph ((a)(1),(b))
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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