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Net Income Attributable to Participating Securities (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 | Oct. 02, 2011 | Sep. 30, 2012 | Oct. 02, 2011
Earnings Per Share [Line Items] |  |  |  |
Net Income | $ 0 | $ 0.3 | $ (0.5) | $ 0.9

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- Details
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- Definition Income loss attributable to participating securities. + References No definition available. + Details
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