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Financial Instruments - Narrative (Detail) - USD ($) | Mar. 28, 2020 | Dec. 28, 2019
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Equity Forwards |  |
Investment Holdings [Line Items] |  |
Equity forwards in place of common stock associated with its deferred compensation plans (in shares) | 119,700 |
Treasury locks |  |
Investment Holdings [Line Items] |  |
Treasury locks outstanding | $ 0 | $ 0
Fair Value Hedging |  |
Investment Holdings [Line Items] |  |
Notional amount of interest rate swaps outstanding and designated as fair value hedges | $ 100,000,000.0 | $ 100,000,000.0

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