Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 25, 2022	Jun. 26, 2021
OPERATING ACTIVITIES
Net income	$ 237,394	$ 169,534
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	28,045	24,244
Non-cash interest charges	224	224
Provisions for losses on trade and other accounts receivable	6,359	1,393
Gains on sales/disposals of operating property	(1,213)	(766)
Deferred income taxes, net	5,999	6,240
Stock-based compensation	5,810	10,893
Changes in operating assets and liabilities:
Increase in trade and other accounts receivable	(82,233)	(55,236)
Increase in other assets	(42,742)	(24,704)
Increase in accounts payable	66,404	101,206
(Decrease) increase in other liabilities	(25,265)	7,882
Increase (decrease) in insurance claims	10,869	(103,734)
NET CASH PROVIDED BY OPERATING ACTIVITIES	209,651	137,176
INVESTING ACTIVITIES
Sales and maturities of investments	21,918	17,242
Purchases of investments	(23,883)	(68,366)
Purchases of operating property	(7,467)	(9,000)
Proceeds from sales of operating property	2,358	1,438
Purchase of non-marketable securities	(4,999)
NET CASH USED BY INVESTING ACTIVITIES	(12,073)	(58,686)
FINANCING ACTIVITIES
Decrease in cash overdraft	(2,875)	(4,194)
Dividends paid	(93,968)	(92,905)
Proceeds from exercises of stock options	56	77
Taxes paid in lieu of shares issued related to stock-based compensation plans	(10,269)	(2,341)
Purchases of common stock	(212,632)	(23,837)
Principal payments on finance lease obligations	(19,051)	(19,143)
Payment of deferred consideration		(168)
NET CASH USED BY FINANCING ACTIVITIES	(338,739)	(142,511)
Effect of exchange rate changes on cash and cash equivalents	(190)	1,071
Decrease in cash, cash equivalents and restricted cash	(141,351)	(62,950)
Cash, cash equivalents and restricted cash at beginning of period	219,571	249,354
Cash, cash equivalents and restricted cash at end of period	$ 78,220	$ 186,404