v2.4.0.8

Share-Based Compensation - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended		6 Months Ended	12 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012	Dec. 29, 2012	Dec. 31, 2011	Jun. 29, 2013 2007 Plan [Member]	Dec. 29, 2012 2007 Plan [Member]	Aug. 07, 2007 2007 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of options to purchase shares									3.0
Vesting period of options							5 years
Expiration period of options							10 years
Common stock shares added to share reserve							1.7	1.7
Percentage of Company's total shares outstanding					3.00%	3.00%
Company issued shares of common stock as a result of stock option exercises					0.2
Share-based compensation expense	$ 3.0	$ 4.0	$ 6.4	$ 7.8
Aggregate intrinsic value of options outstanding	19.7		19.7
Aggregate intrinsic value of options exercisable	17.4		17.4
Aggregate intrinsic value of options exercised	1.2		2.6
Unrecognized share-based compensation related to unvested options granted	$ 31.3		$ 31.3
Unrecognized share-based compensation related to unvested options granted, term			6 years 6 months
Weighted average remaining contractual term of options exercisable, years			3 years 8 months 12 days

X

- Definition

Percentage of total shares outstanding at fiscal year end, to calculate the Evergreen provision, in accordance with the 2007 Plan.

+ References

No definition available.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Number of additional shares authorized for issuance under an established share-based compensation plan.

+ References

No definition available.

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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