Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Dec. 25, 2021
OPERATING ACTIVITIES
Net income	$ 264,394	$ 430,914	$ 381,524
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	58,153	57,453	49,609
Non-cash interest charges	263	355	447
Provisions for losses on trade and other accounts receivable	14,032	12,220	5,722
Gains on sales/disposals of operating property	(4,574)	(2,944)	(1,830)
Deferred income taxes, net	(7,709)	(5,360)	(3,790)
Stock-based compensation	4,282	12,399	27,537
Changes in operating assets and liabilities:
Decrease (increase) in trade and other accounts receivable	222,895	219,190	(362,234)
(Increase) decrease in other assets	(2,544)	(5,938)	4,444
(Decrease) increase in accounts payable	(131,392)	(76,758)	224,125
(Decrease) increase in other liabilities	(15,795)	(31,571)	43,422
(Decrease) increase in insurance claims	(8,357)	12,699	(92,236)
NET CASH PROVIDED BY OPERATING ACTIVITIES	393,648	622,659	276,740
INVESTING ACTIVITIES
Sales and maturities of investments	112,555	41,198	31,938
Purchases of investments	(101,639)	(40,202)	(84,992)
Purchases of operating property	(25,688)	(26,005)	(23,261)
Proceeds from sales of operating property	8,294	5,236	2,971
Purchase of non-marketable securities	0	(4,999)	0
NET CASH USED BY INVESTING ACTIVITIES	(6,478)	(24,772)	(73,344)
FINANCING ACTIVITIES
(Decrease) increase in cash overdraft	(31,412)	(23,525)	41,730
Dividends paid	(117,130)	(115,671)	(111,961)
Payment for debt issue costs	0	(1,080)	0
Proceeds from exercises of stock options	28	68	160
Taxes paid in lieu of shares issued related to stock-based compensation plans	(9,185)	(10,428)	(2,342)
Purchases of common stock	(53,919)	(285,983)	(122,722)
Principal payments on finance lease obligations	(36,353)	(39,063)	(37,644)
Payment of deferred consideration	0	0	(168)
NET CASH USED BY FINANCING ACTIVITIES	(247,971)	(475,682)	(232,947)
Effect of exchange rate changes on cash and cash equivalents	2,263	(2,195)	(232)
Increase (decrease) in cash, cash equivalents and restricted cash	141,462	120,010	(29,783)
Cash, cash equivalents and restricted cash at beginning of period	339,581	219,571	249,354
Cash, cash equivalents and restricted cash at end of period	$ 481,043	$ 339,581	$ 219,571