CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 29, 2014	Dec. 28, 2013
Current assets:
Cash and cash equivalents	$ 568,145	$ 301,868
Short-term investments	837,254	829,559
Trade receivables	553,286	540,156
Merchandise inventories	1,501,186	1,506,977
Deferred tax assets	65,700	55,761
Prepaid expenses	36,401	25,823
Total current assets	3,561,972	3,260,144
Long-term investments	5,639,348	5,161,927
Other noncurrent assets	340,806	319,818
Property, plant and equipment	8,593,349	8,418,636
Accumulated depreciation	(3,695,559)	(3,613,884)
Net property, plant and equipment	4,897,790	4,804,752
Total assets	14,439,916	13,546,641
Current liabilities:
Accounts payable	1,441,393	1,383,134
Accrued expenses:
Contribution to retirement plans	233,918	448,339
Self-insurance reserves	151,243	150,860
Salaries and wages	163,716	116,116
Dividends payable	291,163	0
Other	289,151	223,048
Current portion of long-term debt	58,834	37,509
Federal and state income taxes	255,314	19,916
Total current liabilities	2,884,732	2,378,922
Deferred tax liabilities	340,856	356,956
Self-insurance reserves	205,021	205,181
Accrued postretirement benefit cost	103,007	102,763
Long-term debt	111,191	124,645
Other noncurrent liabilities	114,120	110,378
Total liabilities	3,758,927	3,278,845
Common stock related to Employee Stock Ownership Plan (ESOP)	2,586,111	2,322,903
Stockholders’ equity:
Common stock of $1 par value. Authorized 1,000,000 shares; issued 786,042 shares in 2014 and 776,721 shares in 2013	786,042	776,721
Additional paid-in capital	2,170,996	1,898,974
Retained earnings	7,658,319	7,454,448
Treasury stock at cost, 2,646 shares in 2014	(79,773)	0
Accumulated other comprehensive earnings	95,559	86,999
Common stock related to ESOP	(2,586,111)	(2,322,903)
Total stockholders’ equity	8,045,032	7,894,239
Noncontrolling interests	49,846	50,654
Total equity	10,680,989	10,267,796
Total liabilities and stockholders' equity	$ 14,439,916	$ 13,546,641