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Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 26, 2020 USD ($) Customer | Dec. 28, 2019 USD ($) Customer | Dec. 29, 2018 USD ($) | Jan. 31, 2020 USD ($) | Jan. 02, 2020
Significant Accounting Policies [Line Items] |  |  |  |  |
Highly liquid short-term investments maturity date | three months or less |  |  |  |
Sale of accounts receivable | $ 740.0 | $ 676.4 | $ 604.7 |  |
Factoring costs associated with the sales of accounts receivable | 13.2 | 16.7 | 14.5 |  |
Long-term core inventory | 19.6 | 22.8 |  |  |
Total book value of equity method investments with fair value | 8.5 | 19.3 |  |  |
Income from equity method investments | 1.3 | $ 3.2 | 2.2 |  |
Carrying book value of cost method investments | $ 5.0 |  |  |  |
Number of largest customers | Customer | 4 | 4 |  |  |
Credit Concentration Risk [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Concentration risk percentage | 82.00% | 80.00% |  |  |
Supplier Concentration Risk [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Concentration risk percentage | 77.00% | 79.00% |  |  |
Selling, General and Administrative Expenses [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Research and development costs | $ 20.7 | $ 21.0 | $ 20.1 |  |
Power Train Industries, Inc. [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Total book value of equity method investments with fair value |  |  |  | $ 12.3 |
Business acquisition, percentage of outstanding stock acquired |  |  |  | 60.00% | 60.00%
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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