CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018
Cash flows from operating activities:
Cash received from customers	$ 28,478,388	$ 26,976,556
Cash paid to employees and suppliers	(25,061,839)	(23,613,609)
Income taxes paid	(361,130)	(548,092)
Self-insured claims paid	(288,782)	(292,064)
Dividends and interest received	159,812	140,673
Other operating cash receipts	255,608	211,856
Other operating cash payments	(15,069)	(12,329)
Net cash provided by operating activities	3,166,988	2,862,991
Cash flows from investing activities:
Payment for capital expenditures	(885,386)	(1,098,845)
Proceeds from sale of property, plant and equipment	7,561	9,408
Payment for investments	(2,214,737)	(1,941,469)
Proceeds from sale and maturity of investments	1,813,477	1,752,100
Net cash used in investing activities	(1,279,085)	(1,278,806)
Cash flows from financing activities:
Payment for acquisition of common stock	(814,306)	(1,192,046)
Proceeds from sale of common stock	233,395	228,032
Dividends paid	(615,549)	(547,693)
Repayment of long-term debt	(7,427)	(42,253)
Other, net	10,730	6,133
Net cash used in financing activities	(1,193,157)	(1,547,827)
Net increase in cash and cash equivalents	694,746	36,358
Cash and cash equivalents at beginning of period	599,264	579,925
Cash and cash equivalents at end of period	1,294,010	616,283
Reconciliation of net earnings to net cash provided by operating activities:
Net earnings	2,216,054	1,974,187
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	534,747	501,098
Increase in last-in, first out (LIFO) reserve	30,788	22,926
Retirement contributions paid or payable in common stock	295,407	273,950
Deferred income taxes	120,713	47,828
Loss on disposal and impairment of property, plant and equipment	5,775	10,612
Gain on investments	(446,852)	(249,808)
Net amortization of investments	33,102	50,357
Changes in operating assets and liabilities providing (requiring) cash:
Trade receivables	(18,633)	21,566
Inventories	57,259	100,983
Other assets	47,293	64,758
Accounts payable and accrued expenses	264,323	262,581
Federal and state income taxes	27,863	(217,775)
Other liabilities	(851)	(272)
Total adjustments	950,934	888,804
Net cash provided by operating activities	$ 3,166,988	$ 2,862,991