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Auction Rate Securities - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Jun. 29, 2013
|
Jun. 30, 2012
|
Jun. 25, 2011
|
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| Schedule of Available-for-sale Securities [Line Items] | |||
| Auction Rate Securities with fair value maturing from 2016 to 2018 | $ 11.8 | ||
| Auction Rate Securities with fair value maturing from 2044 to 2046 | 3.2 | ||
| Auction rate securities with fair value having no stated maturity | 2.0 | ||
| ARS investments, investment grade | 5.5 | ||
| ARS investments, below investment grade | 18.5 | ||
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Auction Rate Securities [Member]
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| Schedule of Available-for-sale Securities [Line Items] | |||
| ARS investments redeemed at par | $ 3.4 | $ 10.1 | $ 3.2 |