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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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- Definition

Income loss attributable to participating securities.

+ References

No definition available.

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