CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018
Cash flows from operating activities:
Cash received from customers	$ 19,109,152	$ 18,151,097
Cash paid to employees and suppliers	(16,671,028)	(15,831,134)
Income taxes paid	(265,296)	(531,571)
Self-insured claims paid	(184,324)	(184,068)
Dividends and interest received	101,159	93,307
Other operating cash receipts	182,159	143,692
Other operating cash payments	(9,858)	(7,862)
Net cash provided by operating activities	2,261,964	1,833,461
Cash flows from investing activities:
Payment for capital expenditures	(651,213)	(731,373)
Proceeds from sale of property, plant and equipment	3,360	7,990
Payment for investments	(1,662,396)	(1,138,033)
Proceeds from sale and maturity of investments	1,103,933	983,841
Net cash used in investing activities	(1,206,316)	(877,575)
Cash flows from financing activities:
Payment for acquisition of common stock	(590,708)	(750,771)
Proceeds from sale of common stock	153,478	154,275
Dividends paid	(401,387)	(359,252)
Repayment of long-term debt	(4,984)	(22,930)
Other, net	9,299	4,797
Net cash used in financing activities	(834,302)	(973,881)
Net increase (decrease) in cash and cash equivalents	221,346	(17,995)
Cash and cash equivalents at beginning of period	599,264	579,925
Cash and cash equivalents at end of period	820,610	561,930
Reconciliation of net earnings to net cash provided by operating activities:
Net earnings	1,642,028	1,296,443
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	350,976	328,381
Increase in last-in, first out (LIFO) reserve	20,468	15,224
Retirement contributions paid or payable in common stock	200,329	179,757
Deferred income taxes	107,238	11,508
Loss on disposal and impairment of property, plant and equipment	2,794	4,987
Gain on investments	(423,599)	(52,300)
Net amortization of investments	23,252	35,801
Changes in operating assets and liabilities providing (requiring) cash:
Trade receivables	1,466	41,474
Inventories	47,803	62,240
Other assets	21,055	(29,552)
Accounts payable and accrued expenses	210,727	158,441
Federal and state income taxes	59,815	(214,478)
Other liabilities	(2,388)	(4,465)
Total adjustments	619,936	537,018
Net cash provided by operating activities	$ 2,261,964	$ 1,833,461