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Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions | 12 Months Ended
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Dec. 30, 2017 USD ($) Customer Contract | Dec. 31, 2016 USD ($) Customer Contract | Dec. 26, 2015 USD ($)
Significant Accounting Policies [Line Items] |  |  |
Highly liquid short-term investments maturity date | three months or less |  |
Sale of accounts receivable | $ 582.9 | $ 521.9 | $ 519.2
Additional receivables outstanding if receivables had not been sold | 380.8 | 338.3 |
Factoring costs associated with the sales of accounts receivable | 11.4 | 8.9 | 7.2
Long-term core inventory | 20.2 | 18.5 |
Total book value of equity method investments | 21.1 |  |
Income from equity method investments | 3.3 |  |
Accrued customer rebates | 6.8 | 7.3 |
Product warranty reserves | $ 0.5 | $ 0.5 |
Number of largest customers | Customer | 5 | 5 |
Number of foreign exchange forward contracts outstanding | Contract | 0 | 0 |
Credit Concentration Risk [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Concentration risk percentage | 85.00% | 87.00% |
Supplier Concentration Risk [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Concentration risk percentage | 71.00% |  |
Selling, General and Administrative Expenses [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Research and development costs | $ 20.0 | $ 18.9 | $ 16.8
Minimum [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful life of Property, Plant and Equipment | 3 years |  |
Maximum [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful life of Property, Plant and Equipment | 39 years |  |

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