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EQUITY AND NONCONTROLLING INTERESTS - Nonredeemable and Redeemable Noncontrolling Interest, Additional Information (Details) - USD ($) $ in Thousands	Jun. 13, 2019	Dec. 26, 2020	Feb. 29, 2020	Dec. 28, 2019	Aug. 28, 2019	Apr. 29, 2019	Dec. 29, 2018
Schedule of Investments [Line Items]
Redeemable noncontrolling interests		$ 25,499		$ 28,647			$ 18,525
Citoxlab
Schedule of Investments [Line Items]
Redeemable noncontrolling interest, contractually defined redemption value			$ 4,000
Contingent consideration			$ 2,000
Vital River
Schedule of Investments [Line Items]
Purchase price of additional equity interest	$ 7,900
Gain in equity equal to the excess fair value of additional equity interest purchased	800
Charge in other income, net equal to the excess fair value of the hybrid equity instrument	$ 2,200
Redeemable noncontrolling interests		$ 16,300
Vital River
Schedule of Investments [Line Items]
Ownership percentage	92.00%
Additional equity interest percentage purchased	5.00%
Remaining ownership interest	8.00%
Citoxlab
Schedule of Investments [Line Items]
Ownership percentage				90.00%
Remaining ownership interest				10.00%		10.00%
Supplier
Schedule of Investments [Line Items]
Ownership percentage					80.00%
Remaining ownership interest					20.00%	20.00%

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Equity Method Investment, Increase (Decrease) In Ownership Percentage By Parent

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Amount of liability recognized arising from contingent consideration in a business combination.

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The expenses and losses recorded for each transaction with the acquiree that was recognized separately from the acquisition of assets and assumptions of liabilities in the business combination.

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Represents the purchase by the parent of an additional equity interest in a subsidiary during the period, thereby effecting a change in total (consolidated) equity attributable to the parent. The purchase of the additional equity interest represented by this element increases the parent's controlling interest in the subsidiary.

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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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Redemption value, as if currently redeemable, of redeemable noncontrolling interest classified as temporary equity and the election has been made to accrete changes in redemption value to the earliest redemption date.

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