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Pension Plans - Narrative (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jan. 02, 2021 | Dec. 28, 2019 | Dec. 29, 2018
Defined Benefit Plan Disclosure [Line Items] |  |  |
Normal retirement age | 65 years |  |
Accumulated benefit obligation | $ 1,621.5 | $ 1,478.0 |
Expense recognized related to 401(k)plan | $ 10.3 | $ 9.8 | $ 9.4
Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Time horizon for asset under risk and correlation assumption (in years) | 10 years |  |
Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Time horizon for asset under risk and correlation assumption (in years) | 20 years |  |
United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Weighted-average discount rate | 2.70% |  |
Increase in pension expense | $ 4.5 |  |
Increase in projected benefit obligation | $ 82.4 |  |
Percentage of projected benefit obligations | 82.00% |  |
Foreign Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Weighted-average discount rate | 1.70% |  |
Increase in pension expense | $ 1.9 |  |
Increase in projected benefit obligation | $ 32.3 |  |
Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected long-term rate of return on plan assets | 7.00% | 7.10% | 7.10%
Pension Plan | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected future employer contributions | $ 2.2 |  |
Expected long-term rate of return on plan assets | 6.75% |  |
Pension plans' assets as percentage of worldwide pension assets | 86.00% |  |
Pension Plan | Foreign Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected future employer contributions | $ 9.2 |  |
Pension Plan | Foreign Pension Plans | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected long-term rate of return on plan assets | 1.00% |  |
Pension Plan | Foreign Pension Plans | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected long-term rate of return on plan assets | 5.40% |  |

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