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Recent Accounting Pronouncements - Summary of Reclassification of Tax Effects to Retained Earnings from AOCI (Detail) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Pension and postretirement plans |  | $ 8,474 | $ (897) | $ 2,238
Retained Earnings |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Pension and postretirement plans | $ (17,097) |  |  |
Hedged financial instruments | (1,709) |  |  |
Total reclassifications of stranded income tax effects to retained earnings from AOCI | (18,806) |  |  |
AOCI |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Pension and postretirement plans | 17,097 |  |  |
Hedged financial instruments | 1,709 |  |  |
Total reclassifications of stranded income tax effects to retained earnings from AOCI | $ 18,806 |  |  |

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