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Summary of Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jul. 02, 2016 | Jul. 04, 2015 | Jul. 02, 2016 | Jul. 04, 2015 | Jan. 02, 2016
Summary Of Accounting Policies [Line Items] |  |  |  |  |
Long-term deferred income tax assets | $ 61.6 |  | $ 61.6 |  | $ 60.4
Deferred Tax Liabilities Non Current [Member] |  |  |  |  |
Summary Of Accounting Policies [Line Items] |  |  |  |  |
Current deferred income tax assets |  |  |  |  | 109.9
Long-term deferred income tax assets |  |  |  |  | 45.9
Current deferred income tax liabilities |  |  |  |  | 0.3
Unconsolidated Affiliates [Member] |  |  |  |  |
Summary Of Accounting Policies [Line Items] |  |  |  |  |
Investments in unconsolidated affiliates | 15.1 |  | 15.1 |  | $ 13.3
Purchases from unconsolidated affiliates | $ 3.2 | $ 3.8 | $ 7.4 | $ 7.7 |
Minimum [Member] | Unconsolidated Affiliates [Member] |  |  |  |  |
Summary Of Accounting Policies [Line Items] |  |  |  |  |
Percentage of ownership interest under equity method accounting | 20.00% |  | 20.00% |  |
Maximum [Member] | Unconsolidated Affiliates [Member] |  |  |  |  |
Summary Of Accounting Policies [Line Items] |  |  |  |  |
Percentage of ownership interest under equity method accounting | 50.00% |  | 50.00% |  |

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