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SEGMENT AND GEOGRAPHIC INFORMATION - Unallocated Corporate Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Segment Reporting Information [Line Items]
Stock-based compensation	$ 56,341	$ 57,271	$ 47,346
Depreciation	123,000	108,600	96,900
Unallocated corporate
Segment Reporting Information [Line Items]
Stock-based compensation	34,111	37,855	32,068
Compensation, benefits, and other employee-related expenses	73,814	73,893	69,191
External consulting and other service expenses	26,561	16,639	18,652
Information technology	18,912	16,080	12,463
Depreciation	3,018	4,175	6,805
Acquisition and integration	13,995	26,877	16,295
Other general unallocated corporate	7,019	11,565	13,400
Total unallocated corporate expense	$ 177,430	$ 187,084	$ 168,874

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Represents the sum total of audit, tax and related expenses.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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