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Auction Rate Securities - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 29, 2013
Schedule of Available-for-sale Securities [Line Items]
Auction Rate Securities with fair value maturing from 2016 to 2018	$ 13.1
Auction rate securities with fair value having no stated maturity	2.7
ARS investments, investment grade	0.6
ARS investments, below investment grade	$ 18.5
Minimum [Member]
Schedule of Available-for-sale Securities [Line Items]
Maturity period one	2016
Maximum [Member]
Schedule of Available-for-sale Securities [Line Items]
Maturity period one	2018
Auction Rate Securities Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
ARS investments redeemed at par	$ 4.9	$ 0.0	$ 3.4
ARS investments, current	$ 0.6
ARS investments current, maturity date	Jul. 01, 2015

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Auction rate securities at investment grade.

+ References

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- Definition

Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 320



-SubTopic 10



-Section 25



-Paragraph 1



-Subparagraph (b)



-URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 320



-SubTopic 10



-Section 45



-Paragraph 2



-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562

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