Restricted Stock and Performance Based Restricted Stock Activity Related to Equity Incentive Plans (Detail) (USD $)	12 Months Ended
	Dec. 30, 2012
Schedule Of Activity Related To Performance Share Units [Line Items]
Restricted Stock, Nonvested Shares at beginning of period	958,674
Restricted Stock, Nonvested Shares granted	304,590	[1]
Restricted Stock, Nonvested Shares cancelled	(43,274)
Restricted Stock, Nonvested Shares vested	(528,148)
Restricted Stock, Nonvested Shares at end of period	691,842
Weighted Average Grant Date Fair Value at beginning of period	$ 14.33
Weighted Average Grant Date Fair Value, granted	$ 33.22	[1]
Weighted Average Grant Date Fair Value, cancelled	$ 29.89
Weighted Average Grant Date Fair Value, vested	$ 19.65
Weighted Average Grant Date Fair Value at end of period	$ 17.61

[1] The weighted average grant date fair value for performance-based restricted shares granted was calculated based on the market price on the grant dates. Certain tranches will ultimately be valued when the performance condition is established for each tranche, which generally occurs in the fourth quarter of each fiscal year.