CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 29, 2013	Dec. 29, 2012
Current assets:
Cash and cash equivalents	$ 290,146	$ 337,400
Short-term investments	911,765	797,260
Trade receivables	518,918	519,137
Merchandise inventories	1,400,048	1,409,367
Deferred tax assets	62,031	57,834
Prepaid expenses	63,989	28,124
Total current assets	3,246,897	3,149,122
Long-term investments	4,838,581	4,235,846
Other noncurrent assets	209,251	202,636
Property, plant and equipment	8,143,671	8,979,469
Accumulated depreciation	(3,422,266)	(4,288,753)
Net property, plant and equipment	4,721,405	4,690,716
Total assets	13,016,134	12,278,320
Current liabilities:
Accounts payable	1,342,065	1,306,996
Accrued expenses:
Contribution to retirement plans	302,837	430,395
Self-insurance reserves	139,047	138,998
Salaries and wages	196,694	109,091
Other	280,945	230,486
Current portion of long-term debt	30,034	5,018
Total current liabilities	2,291,622	2,220,984
Deferred tax liabilities	324,155	327,294
Self-insurance reserves	211,889	212,728
Accrued postretirement benefit cost	116,848	116,721
Long-term debt	125,860	153,454
Other noncurrent liabilities	114,943	118,321
Total liabilities	3,185,317	3,149,502
Common stock related to Employee Stock Ownership Plan (ESOP)	2,502,590	2,272,963
Stockholders’ equity:
Common stock of $1 par value. Authorized 1,000,000 shares; issued 786,507 shares in 2013 and 776,094 shares in 2012	786,507	776,094
Additional paid-in capital	1,860,864	1,627,258
Retained earnings	7,238,027	6,640,538
Treasury stock at cost, 5,243 shares in 2013	(134,352)	0
Accumulated other comprehensive earnings	33,470	38,289
Common stock related to ESOP	(2,502,590)	(2,272,963)
Total stockholders’ equity	7,281,926	6,809,216
Noncontrolling interests	46,301	46,639
Total equity	9,830,817	9,128,818
Total liabilities and stockholders' equity	$ 13,016,134	$ 12,278,320