v2.4.0.8

Share-Based Compensation - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended				0 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011	Aug. 07, 2007 Two Thousand Seven Plan
Schedule Of Share Based Compensation Arrangements [Line Items]
Issuance of options to purchase shares					3,000,000
Vesting period of options					5 years
Expiration period of options					10 years
Common stock shares added to share reserve					1,700,000
Percentage of company's total shares outstanding			3.00%	3.00%
Common stock reserved for future issuance	14,700,000
Unrecognized share-based compensation related to unvested options granted	$ 25.9
Unrecognized share-based compensation related to unvested options granted, term	3 years 4 months 10 days
Total fair market value of all vesting options	12.3	14.3	12.1
Aggregated intrinsic value of options outstanding	59.9
Aggregated intrinsic value of options exercisable	37.0
Aggregated intrinsic value of options exercised	4.2	3.1	12.4
Weighted average remaining contractual term of options outstanding, years price below the market value	6 years 4 months 14 days
Weighted average remaining contractual term of options exercisable, years	4 years 6 months
Total income tax benefit recognized for share-based compensation expense	$ 3.9	$ 4.9	$ 4.8

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- Definition

The increase in the number of shares of common stock reserved for future issuance.

+ References

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- Definition

The maximum number of years after grant date, that a share-based payment arrangement is exercisable, before expiring.

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- Definition

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

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- Definition

Share based compensation arrangement by share based payment award options outstanding weighted average remaining contractual term price below market value.

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- Definition

Initial amount of shares reserved for future issuance.

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- Definition

Aggregate number of common shares reserved for future issuance.

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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

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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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

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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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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