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Stock-Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 04, 2015 USD ($) | Jul. 05, 2014 USD ($) | Jul. 04, 2015 USD ($) $ / shares Anniversaries Installment | Jul. 05, 2014 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock options exercise prices as percentage of the market value on the date of the grant |  |  | 100.00% |
Grant date fair value of options granted | $ / shares |  |  | $ 11.71 |
Compensation expenses for stock options | $ 7.0 | $ 7.6 | $ 7.1 | $ 7.6
Restricted Stock [Member] | LTIP [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Portion of restricted stock award vesting on anniversary |  |  | 33.30% |
Eligible age of officer for LTIP restricted stock award |  |  | 55 years |
Restricted Stock Units [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unrecognized compensation expense related to stock | 41.5 |  | $ 41.5 |
Weighted-average recognition period for unrecognized compensation expense related to stock (years) |  |  | 2 years 6 months |
Number of anniversaries of grant date upon which restricted stock units vest | Anniversaries |  |  | 3 |
Installments in which restricted stock units vest and are converted to common stock | Installment |  |  | 3 |
Compensation expense | 19.1 | 17.6 | $ 24.4 | 22.5
Restricted Stock Units [Member] | AIP [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Amount of annual incentive award payment participant can elect to defer |  |  | 50.00% |
Additional common stock units for election of deferred annual incentive award, percentage |  |  | 25.00% |
Stock Options [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock options vesting period |  |  | 3 years |
Stock options term, years |  |  | 10 years |
Unrecognized compensation expense related to stock | 1.5 |  | $ 1.5 |
Weighted-average recognition period for unrecognized compensation expense related to stock (years) |  |  | 2 years 8 months 12 days |
Restricted Stock And Restricted Stock Units [Member] | AIP and LTIP [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unrecognized compensation expense related to stock | 1.1 |  | $ 1.1 |
Weighted-average recognition period for unrecognized compensation expense related to stock (years) |  |  | 1 year 10 months 24 days |
Compensation expense | $ 1.2 | $ 1.9 | $ 2.3 | $ 3.1

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