Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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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	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 1,632.4	$ 1,455.5	$ 1,215.6
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	$ 1,401.0	$ 1,260.5
United States \| Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 1,401.0	$ 1,260.5
United States \| Equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation	54.00%
Actual weighted-average asset allocation	54.00%	51.00%
United States \| Debt securities and cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Target allocation	41.00%
Actual weighted-average asset allocation	41.00%	40.00%
United States \| Real estate and other real assets
Defined Benefit Plan Disclosure [Line Items]
Target allocation	0.00%
Actual weighted-average asset allocation	0.00%	1.00%
United States \| Real estate and other real assets \| Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 4.3	$ 8.8
United States \| Hedge funds
Defined Benefit Plan Disclosure [Line Items]
Target allocation	5.00%
Actual weighted-average asset allocation	5.00%	8.00%
United States \| Hedge funds \| Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 73.6	$ 107.8
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	$ 231.4	$ 195.0
Foreign Pension Plans \| Equity securities \| Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Target allocation	46.00%
Actual weighted-average asset allocation	46.00%	46.00%
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%	40.00%
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%	14.00%