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Equity-Based Compensation - Weighted-Average Assumptions Used for Employee Purchase Rights Granted Under Stock Purchase Plan (Detail) - $ / shares
9 Months Ended
Oct. 03, 2015
Sep. 27, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected dividend yield 0.00% 0.00%
Stock Purchase Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair market value $ 80.43 $ 63.42
Option price $ 76.41 $ 60.25
Expected dividend yield 0.00% 0.00%
Expected volatility 41.00% 31.00%
Risk free interest rate 0.03% 0.06%