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Financial Instruments - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
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Dec. 23, 2012
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Dec. 25, 2011
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Dec. 23, 2012
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Dec. 25, 2011
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| Financial Instruments [Line Items] | ||||
| Other than temporary impairment included in net realized gains (losses) | $ 1.7 | |||
| Gains realized from sales of investments | 0.9 | 0.1 | 1.1 | 0.2 |
| Losses realized from sales of investments | (0.3) | (0.2) | (0.7) | (0.3) |
| Investment classified as short term, maturity period | 1 year | 1 year | ||
| Gains (losses) accumulated in Other Comprehensive Income expects to reclassify from Other Comprehensive Income into earnings | $ 3.7 | $ 3.7 | ||
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Minimum
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| Financial Instruments [Line Items] | ||||
| Foreign currency forward contract, expiration period | 12 months | 12 months | ||
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Maximum
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| Financial Instruments [Line Items] | ||||
| Foreign currency forward contract, expiration period | 24 months | 24 months | ||