CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 25, 2021	Sep. 26, 2020
Statement of Cash Flows [Abstract]
Net income	$ 48,321	$ 3,255
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	78,722	32,656
Non-cash lease cost	56,563	26,254
Loss on foreign denominated transactions	9,301	55
Gain on derivatives not designed as hedges	(2,945)	0
Bad debt expense	2,535	4,829
Asset impairment charges and lease terminations	3,161	6,732
Amortization of deferred financing costs and bond discounts	5,139	7,176
Benefit (provision) for deferred income taxes	15,898	(4,524)
Loss on debt extinguishment	45,576	673
Other, net	4,257	1,566
Changes in assets and liabilities, net of acquisitions:
Accounts and notes receivable, net	(28,787)	(12,349)
Inventory	(3,279)	(1,328)
Prepaid and other assets	(18,414)	1,755
Advertising fund assets and liabilities, restricted	5,818	(554)
Deferred commissions	(1,205)	(1,810)
Deferred revenue	3,983	3,438
Accounts payable	(3,903)	10,311
Accrued expenses and other liabilities	25,595	8,926
Income tax receivable	(320)	7,551
Operating lease liabilities	(47,821)	(28,157)
Cash provided by operating activities	198,195	66,455
Cash flows from investing activities:
Capital expenditures	(93,627)	(35,124)
Cash used in business acquisitions, net of cash acquired	(442,488)	8,575
Proceeds from sale-leaseback transactions	66,391	0
Proceeds from sale of At-Pac business	1,532	0
Proceeds from disposal of property and equipment	5,471	0
Cash used in investing activities	(462,721)	(26,549)
Cash flows from financing activities:
Payment of contingent consideration related to acquisitions	0	(2,783)
Payment of debt extinguishment and issuance costs	(2,153)	(12,639)
Proceeds from the issuance of long-term debt	0	175,000
Repayment of long-term debt	(716,542)	(11,619)
Proceeds from revolving lines of credit and short-term debt	441,800	152,101
Repayments of revolving lines of credit and short-term debt	(212,800)	(191,600)
Repayment of principal portion of finance lease liability	(1,760)	(731)
Proceeds from failed sale-leaseback transactions	0	3,432
Proceeds from initial public offering, net of underwriting discounts	661,500	0
Net proceeds from underwriters' exercise of over-allotment option	99,225	0
Repurchases of common stock	(43,040)	0
Payment for termination of interest rate swaps	(21,826)	0
Stock option exercises	339	0
Other, net	102	0
Cash provided by financing activities	204,845	111,161
Effect of exchange rate changes on cash	(2,285)	468
Net change in cash, cash equivalents, restricted cash, and cash included in advertising fund assets, restricted	(61,966)	151,535
Cash and cash equivalents, beginning of period	172,611	34,935
Cash Included In Advertising Funds, Restricted Cash And Restricted Cash Equivalents	19,369	23,091
Restricted cash, beginning of period	15,827	0
Cash, cash equivalents, restricted cash, and cash included in advertising fund assets, restricted, beginning of period	207,807	58,026
Cash and cash equivalents, end of period	115,365	184,356
Cash included in advertising fund assets, restricted, end of period	30,341	25,205
Restricted cash, end of period	135	0
Cash, cash equivalents, restricted cash, and cash included in advertising fund assets, restricted, end of period	145,841	209,561
Supplemental cash flow disclosures - non-cash items:
Accrued capital expenditures, end of period	6,123	984
Supplemental cash flow disclosures - cash paid for:
Interest	53,842	61,887
Income taxes	$ 10,593	$ 3,141