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Pension Plans - Summary of Target Allocation and Weighted-Average Asset Allocation by Asset Category and Fair Value of Plan Assets (Detail) - USD ($) $ in Millions | Dec. 28, 2019 | Dec. 29, 2018 | Dec. 30, 2017
--- | --- | --- | ---
Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 1,455.5 | $ 1,215.6 | $ 1,305.0
United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation | 100.00% |  |
Actual weighted-average asset allocation | 100.00% | 100.00% |
Fair value of plan assets | $ 1,260.5 | $ 1,049.0 |
United States | Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 1,260.5 | $ 1,049.0 |
United States | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation | 51.00% |  |
Actual weighted-average asset allocation | 51.00% | 49.00% |
United States | Debt securities and cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation | 37.00% |  |
Actual weighted-average asset allocation | 40.00% | 40.00% |
United States | Real estate and other real assets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation | 2.00% |  |
Actual weighted-average asset allocation | 1.00% | 1.00% |
United States | Real estate and other real assets | Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 8.8 | $ 11.9 |
United States | Hedge funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation | 10.00% |  |
Actual weighted-average asset allocation | 8.00% | 10.00% |
United States | Hedge funds | Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 107.8 | $ 104.5 |
Foreign Pension Plans | Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation | 100.00% |  |
Actual weighted-average asset allocation | 100.00% | 100.00% |
Fair value of plan assets | $ 195.0 | $ 166.6 |
Foreign Pension Plans | Equity securities | Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation | 46.00% |  |
Actual weighted-average asset allocation | 46.00% | 35.00% |
Foreign Pension Plans | Debt securities and cash and cash equivalents | Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation | 40.00% |  |
Actual weighted-average asset allocation | 40.00% | 42.00% |
Foreign Pension Plans | Hedge funds | Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | $ 14.3 |
Foreign Pension Plans | Insurance contracts and hedge funds | Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation | 14.00% |  |
Actual weighted-average asset allocation | 14.00% | 23.00% |

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