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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. 29, 2018 | Dec. 30, 2017
--- | --- | ---
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 | $ 1,049.0 | $ 1,122.7
United States | Equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target allocation | 51.00% |
Actual weighted-average asset allocation | 49.00% | 51.00%
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% | 38.00%
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%
Fair value of plan assets | $ 11.9 | $ 13.2
United States | Hedge funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target allocation | 10.00% |
Actual weighted-average asset allocation | 10.00% | 10.00%
Fair value of plan assets | $ 104.5 | $ 106.1
Foreign Pension Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target allocation | 100.00% |
Actual weighted-average asset allocation | 100.00% | 100.00%
Fair value of plan assets | $ 166.6 | $ 182.3
Foreign Pension Plans | Equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target allocation | 35.00% |
Actual weighted-average asset allocation | 35.00% | 36.00%
Foreign Pension Plans | Debt securities and cash and cash equivalents |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target allocation | 40.00% |
Actual weighted-average asset allocation | 42.00% | 42.00%
Foreign Pension Plans | Hedge funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | $ 14.3 | $ 16.1
Foreign Pension Plans | Insurance contracts and hedge funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target allocation | 25.00% |
Actual weighted-average asset allocation | 23.00% | 22.00%

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