CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Mar. 26, 2016
Cash flows from operating activities:
Cash received from customers	$ 8,736,477	$ 8,742,020
Cash paid to employees and suppliers	(7,604,800)	(7,519,371)
Income taxes paid	(9,576)	(10,021)
Self-insured claims paid	(82,262)	(75,632)
Dividends and interest received	59,759	55,727
Other operating cash receipts	66,493	66,912
Other operating cash payments	(4,565)	(11,218)
Net cash provided by operating activities	1,161,526	1,248,417
Cash flows from investing activities:
Payment for capital expenditures	(287,654)	(336,682)
Proceeds from sale of property, plant and equipment	536	2,589
Payment for investments	(861,677)	(747,159)
Proceeds from sale and maturity of investments	471,840	314,608
Net cash used in investing activities	(676,955)	(766,644)
Cash flows from financing activities:
Payment for acquisition of common stock	(287,451)	(277,919)
Proceeds from sale of common stock	107,743	110,485
Dividends paid	(169,722)	(153,957)
Repayment of long-term debt	(8,616)	(18,797)
Other, net	3,788	(84)
Net cash used in financing activities	(354,258)	(340,272)
Net increase in cash and cash equivalents	130,313	141,501
Cash and cash equivalents at beginning of period	438,319	352,176
Cash and cash equivalents at end of period	568,632	493,677
Reconciliation of net earnings to net cash provided by operating activities:
Net earnings	555,271	581,889
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	157,291	149,934
Increase in LIFO reserve	4,582	7,100
Retirement contributions paid or payable in common stock	102,337	111,193
Deferred income taxes	8,377	4,930
Loss on disposal and impairment of property, plant and equipment	1,780	635
Gain on AFS securities	(31,269)	(5,696)
Net amortization of investments	32,234	35,566
Changes in operating assets and liabilities providing (requiring) cash:
Trade receivables	49,885	(548)
Merchandise inventories	(18,051)	110,081
Prepaid expenses and other noncurrent assets	(9,494)	(6,909)
Accounts payable and accrued expenses	68,633	4,687
Self-insurance reserves	2,268	(154)
Federal and state income taxes	236,741	257,125
Other noncurrent liabilities	941	(1,416)
Total adjustments	606,255	666,528
Net cash provided by operating activities	$ 1,161,526	$ 1,248,417