CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 26, 2022	Mar. 27, 2021
Cash flows from operating activities:
Cash received from customers	$ 13,329,586	$ 11,770,839
Cash paid to employees and suppliers	(11,800,135)	(10,315,725)
Income taxes paid	(6,097)	(23,464)
Self-insured claims paid	(112,215)	(100,347)
Dividends and interest received	73,830	69,002
Other operating cash receipts	94,173	94,083
Other operating cash payments	(5,889)	(6,091)
Net cash provided by operating activities	1,573,253	1,488,297
Cash flows from investing activities:
Payment for capital expenditures	(401,982)	(345,933)
Proceeds from sale of property, plant and equipment	18,126	1,403
Payment for investments	(1,138,916)	(627,866)
Proceeds from sale and maturity of investments	202,846	265,360
Net cash used in investing activities	(1,319,926)	(707,036)
Cash flows from financing activities:
Payment for acquisition of common stock	(537,681)	(340,092)
Proceeds from sale of common stock	100,843	90,882
Dividends paid	(252,821)	(220,975)
Repayment of long-term debt	(14,978)	(3,986)
Other, net	(775)	(1,514)
Net cash used in financing activities	(705,412)	(475,685)
Net (decrease) increase in cash and cash equivalents	(452,085)	305,576
Cash and cash equivalents at beginning of period	1,131,901	673,483
Cash and cash equivalents at end of period	679,816	979,059
Reconciliation of net earnings to net cash provided by operating activities:
Net earnings	618,026	1,495,093
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	202,294	192,241
Increase in last-in, first-out (LIFO) reserve	32,207	11,291
Retirement contributions paid or payable in common stock	112,796	106,140
Deferred income taxes	(154,088)	163,276
(Gain) loss on disposal and impairment of long-lived assets	(962)	11,485
Loss (gain) on investments	579,730	(792,339)
Net amortization of investments	21,212	19,373
Changes in operating assets and liabilities providing (requiring) cash:
Trade receivables	61,494	86,223
Inventories	14,912	(29,842)
Other assets	(1,940)	5,169
Accounts payable and accrued expenses	(221,989)	(5,754)
Income taxes	310,956	220,740
Other liabilities	(1,395)	5,201
Total adjustments	955,227	(6,796)
Net cash provided by operating activities	$ 1,573,253	$ 1,488,297