CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 24, 2016
Cash flows from operating activities:
Cash received from customers	$ 25,786,802	$ 25,024,422
Cash paid to employees and suppliers	(22,593,366)	(21,995,448)
Income taxes paid	(478,456)	(505,330)
Self-insured claims paid	(270,036)	(242,803)
Dividends and interest received	185,542	175,698
Other operating cash receipts	197,277	193,482
Other operating cash payments	(14,748)	(31,258)
Net cash provided by operating activities	2,813,015	2,618,763
Cash flows from investing activities:
Payment for capital expenditures	(1,063,152)	(1,110,516)
Proceeds from sale of property, plant and equipment	4,460	4,300
Payment for investments	(2,353,947)	(1,891,611)
Proceeds from sale and maturity of investments	2,593,592	1,352,848
Net cash used in investing activities	(819,047)	(1,644,979)
Cash flows from financing activities:
Payment for acquisition of common stock	(1,438,628)	(722,641)
Proceeds from sale of common stock	215,424	252,803
Dividends paid	(519,787)	(497,318)
Repayment of long-term debt	(46,019)	(40,831)
Other, net	27,418	(13,412)
Net cash used in financing activities	(1,761,592)	(1,021,399)
Net increase (decrease) in cash and cash equivalents	232,376	(47,615)
Cash and cash equivalents at beginning of period	438,319	352,176
Cash and cash equivalents at end of period	670,695	304,561
Reconciliation of net earnings to net cash provided by operating activities:
Net earnings	1,525,270	1,481,211
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	484,307	458,694
Increase in LIFO reserve	20,720	7,020
Retirement contributions paid or payable in common stock	280,571	278,335
Deferred income taxes	36,311	(10,889)
Loss on disposal and impairment of property, plant and equipment	1,991	2,756
Gain on AFS securities	(104,881)	(12,958)
Net amortization of investments	87,982	105,968
Changes in operating assets and liabilities providing (requiring) cash:
Trade receivables	67,952	90,128
Merchandise inventories	(4,632)	70,809
Prepaid expenses and other noncurrent assets	(5,410)	(18,999)
Accounts payable and accrued expenses	264,196	42,951
Self-insurance reserves	1,692	930
Federal and state income taxes	162,748	129,501
Other noncurrent liabilities	(5,802)	(6,694)
Total adjustments	1,287,745	1,137,552
Net cash provided by operating activities	$ 2,813,015	$ 2,618,763