Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 26, 2015	Dec. 27, 2014
Current assets:
Cash and cash equivalents	$ 352,176	$ 407,493
Short-term investments	1,376,698	999,169
Trade receivables	723,685	549,443
Merchandise inventories	1,740,513	1,597,683
Deferred tax assets	51,216	71,142
Prepaid expenses	70,145	108,619
Total current assets	4,314,433	3,733,549
Long-term investments	5,226,236	5,231,561
Other noncurrent assets	431,311	395,428
Property, plant and equipment:
Land	1,157,619	936,185
Buildings and improvements	3,467,015	2,959,186
Furniture, fixtures and equipment	4,303,132	4,101,837
Leasehold improvements	1,635,791	1,514,200
Construction in progress	148,755	155,382
Property, plant and equipment	10,712,312	9,666,790
Accumulated depreciation	(4,325,014)	(3,943,848)
Net property, plant and equipment	6,387,298	5,722,942
Total assets	16,359,278	15,083,480
Current liabilities:
Accounts payable	1,675,858	1,538,108
Accrued expenses:
Contributions to retirement plans	513,072	477,154
Self-insurance reserves	135,865	151,153
Salaries and wages	131,253	120,372
Other	380,314	373,086
Current portion of long-term debt	56,693	24,936
Federal and state income taxes	9,634	12,982
Total current liabilities	2,902,689	2,697,791
Deferred tax liabilities	425,132	388,667
Self-insurance reserves	214,474	213,213
Accrued postretirement benefit cost	101,725	106,570
Long-term debt	179,753	192,702
Other noncurrent liabilities	104,243	139,314
Total liabilities	3,928,016	3,738,257
Common stock related to Employee Stock Ownership Plan (ESOP)	2,953,878	2,680,528
Stockholders’ equity:
Common stock of $1 par value. Authorized 1,000,000 shares; issued and outstanding 770,175 shares in 2015 and 774,472 shares in 2014	770,175	774,472
Additional paid-in capital	2,556,391	2,200,892
Retained earnings	9,041,497	8,218,340
Accumulated other comprehensive earnings	26,268	109,134
Common stock related to ESOP	(2,953,878)	(2,680,528)
Total stockholders’ equity	9,440,453	8,622,310
Noncontrolling interests	36,931	42,385
Total equity	12,431,262	11,345,223
Commitments and contingencies	0	0
Total liabilities and stockholders' equity	$ 16,359,278	$ 15,083,480