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Financial Instruments - Change in Fair Value of Derivative (Detail) - USD ($) | Dec. 28, 2019 | Dec. 29, 2018
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Long-term debt |  |
Derivatives, Fair Value [Line Items] |  |
Carrying Amount of Hedged Liability | $ (255,000,000.0) | $ (254,600,000)
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities) | (5,000,000.0) | (4,600,000)
6.125% unsecured notes due 2021 |  |
Derivatives, Fair Value [Line Items] |  |
Notional amount of interest rate swaps outstanding and designated as fair value hedges | 100,000,000 |
Unsecured notes. noncurrent | $ 250,000,000.0 | $ 250,000,000.0
Unsecured notes, interest rate | 6.125% |

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