CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 25, 2016	Dec. 26, 2015
Current assets:
Cash and cash equivalents	$ 304,762	$ 352,176
Short-term investments	1,464,791	1,376,698
Trade receivables	611,515	723,685
Merchandise inventories	1,644,634	1,740,513
Deferred tax assets	57,580	51,216
Prepaid expenses	62,555	70,145
Total current assets	4,145,837	4,314,433
Long-term investments	5,532,326	5,226,236
Other noncurrent assets	409,071	431,311
Property, plant and equipment	11,394,807	10,712,312
Accumulated depreciation	(4,541,729)	(4,325,014)
Net property, plant and equipment	6,853,078	6,387,298
Total assets	16,940,312	16,359,278
Current liabilities:
Accounts payable	1,505,544	1,675,858
Accrued expenses:
Contributions to retirement plans	362,349	513,072
Self-insurance reserves	135,405	135,865
Salaries and wages	220,181	131,253
Other	386,471	380,314
Current portion of long-term debt	70,302	56,693
Federal and state income taxes	15,957	9,634
Total current liabilities	2,696,209	2,902,689
Deferred tax liabilities	464,100	425,132
Self-insurance reserves	213,920	214,474
Accrued postretirement benefit cost	101,455	101,725
Long-term debt	169,514	179,753
Other noncurrent liabilities	98,261	104,243
Total liabilities	3,743,459	3,928,016
Common stock related to Employee Stock Ownership Plan (ESOP)	3,217,495	2,953,878
Stockholders’ equity:
Common stock of $1 par value. Authorized 1,000,000 shares; issued 776,025 shares in 2016 and 770,175 shares in 2015	776,025	770,175
Additional paid-in capital	2,823,792	2,556,391
Retained earnings	9,775,500	9,041,497
Treasury stock at cost, 6,065 shares in 2016	(269,950)	0
Accumulated other comprehensive earnings	54,798	26,268
Common stock related to ESOP	(3,217,495)	(2,953,878)
Total stockholders’ equity	9,942,670	9,440,453
Noncontrolling interests	36,688	36,931
Total equity	13,196,853	12,431,262
Total liabilities and stockholders' equity	$ 16,940,312	$ 16,359,278