v2.4.0.8
Share-Based Compensation - Range of Assumptions Used and Resulting Weighted-Average Fair Value of Options Granted at Date of Grant (Detail) (USD $)
 12 Months Ended
Dec. 28, 2013
Dec. 29, 2012
Dec. 31, 2011
Range of assumptions used and resulting weighted-average fair value of options granted at the date of grant      
Risk-free interest rate, minimum 0.70% 0.70% 0.90%
Risk-free interest rate, maximum 1.80% 1.30% 2.50%
Estimated volatility, minimum 31.20% 36.60% 36.70%
Estimated volatility, maximum 39.60% 42.60% 43.20%
Expected dividends 0.00% 0.00% 0.00%
Weighted-average fair value of options granted $ 7.53 $ 7.98 $ 9.44
Maximum
      
Range of assumptions used and resulting weighted-average fair value of options granted at the date of grant      
Expected term, years 5 years 6 months 5 years 6 months 5 years 6 months
Minimum
      
Range of assumptions used and resulting weighted-average fair value of options granted at the date of grant      
Expected term, years 5 years 1 month 6 days 5 years 6 months 5 years 3 months 18 days