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EMPLOYEE BENEFIT PLANS - Expense for Defined Contribution Plans Aside from ESOP Plans (Detail) $ in Millions	12 Months Ended
	Dec. 28, 2019 USD ($) employee shares	Dec. 29, 2018 USD ($) shares	Dec. 30, 2017 USD ($) shares
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Employee Benefits and Share-based Compensation	$ 0.7
Employee Stock Ownership Plan (ESOP), Gain (Loss) on Transactions in Deferred Shares	(0.5)	$ (0.4)	$ (1.3)
Defined Contribution Plan, Employer Discretionary Contribution Amount	7.2	7.0	4.8
Multi-employer plan expense	7.2	7.3	7.2
Other defined contribution plan expense	$ 36.2	$ 12.9	$ 27.5
Employee Stock Ownership Plan (ESOP), Shares in ESOP | shares	226,212	207,049	133,694
Employee Stock Ownership Plan (ESOP), Plan
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Employee Stock Ownership Plan (ESOP), Number of Allocated Shares | shares	15,418,053
Stock Issued During Period, Shares, Employee Stock Ownership Plan | shares	1,889,408
Employee Stock Ownership Plan (ESOP), Number of Suspense Shares | shares	122,681
Defined Contribution Plan Employer Contributions Percentage Match Of Eligible Compensation	7.00%
Employee Stock Ownership Plan (ESOP), Dividends Paid to ESOP	$ 6.3	$ 7.7	$ 8.4
Employee Stock Ownership Plan (ESOP), Interest Payments from ESOP	0.5	1.6	2.2
Employee Stock Ownership Plan (ESOP), Cash Contributions to ESOP	$ 2.2	$ 2.3	$ 1.8
Group 1 [Member] | Employee Stock Ownership Plan (ESOP), Plan
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Number Of Employees Included In Plan | employee	9,400
Maximum [Member] | Employee Stock Ownership Plan (ESOP), Plan
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Defined Contribution Plan Employer Contributions Percentage Match Of Eligible Compensation	25.00%
Maximum [Member] | Group 1 [Member] | Employee Stock Ownership Plan (ESOP), Plan
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	6.00%
Minimum | Group 1 [Member] | Employee Stock Ownership Plan (ESOP), Plan
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	2.00%

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- Definition

Defined Contribution Plan, Employer Contributions, Percentage Match of Eligible Compensation

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Number of Employees Included in Plan

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Amount of discretionary contributions made by an employer to a defined contribution plan.

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This item represents the amount of cash contributions during the period made by the entity to the Employee Stock Ownership Plan (ESOP).

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Dividends paid on stock held by an employee stock ownership plan.

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The difference between cost and fair value added or subtracted from paid-in capital, arising from contribution of shares to an ESOP or commitments-to-release ESOP shares.

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An entity often discloses the amount of interest paid by the ESOP to a lender.

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The shares or units in an ESOP trust that have been assigned to individual participant accounts based on a known formula. IRS rules require allocations to be nondiscriminatory generally based on compensation, length of service, or a combination of both. For any particular participant such shares or units may be vested, unvested, or partially vested.

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Shares contributed to the ESOP that have not yet been released, committed to be released, or allocated to participant accounts. Suspense shares generally collateralize ESOP debt.

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