CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 27, 2021	Dec. 26, 2020
Current assets:
Cash and cash equivalents	$ 979,059	$ 673,483
Short-term investments	661,992	682,965
Trade receivables	831,308	917,531
Inventories	2,052,343	2,033,792
Prepaid expenses	65,897	110,025
Total current assets	4,590,599	4,417,796
Long-term investments	11,624,617	10,605,234
Other noncurrent assets	423,018	415,103
Operating lease right-of-use assets	2,925,750	2,965,424
Property, plant and equipment	16,594,487	16,256,993
Accumulated depreciation	(6,712,051)	(6,566,473)
Net property, plant and equipment	9,882,436	9,690,520
Total assets	29,446,420	28,094,077
Current liabilities:
Accounts payable	2,374,395	2,414,798
Accrued expenses:
Contributions to retirement plans	309,271	639,581
Self-insurance reserves	165,821	161,223
Salaries and wages	235,000	197,721
Other	693,466	499,970
Current portion of long-term debt	44,151	36,392
Current portion of operating lease liabilities	347,015	345,805
Federal and state income taxes	247,499	71,354
Total current liabilities	4,416,618	4,366,844
Deferred income taxes	899,277	772,722
Self-insurance reserves	240,170	235,858
Accrued postretirement benefit cost	130,801	131,356
Long-term debt	115,064	123,835
Operating lease liabilities	2,550,441	2,588,258
Other noncurrent liabilities	484,329	589,340
Total liabilities	8,836,700	8,808,213
Common stock related to Employee Stock Ownership Plan (ESOP)	4,045,233	3,484,549
Stockholders’ equity:
Common stock of $1 par value. Authorized 1,000,000 shares; issued 695,725 shares in 2021 and 690,982 shares in 2020	695,725	690,982
Additional paid-in capital	4,291,412	4,005,969
Retained earnings	15,617,983	14,343,865
Treasury stock at cost, 2,173 shares in 2021	(130,827)	0
Accumulated other comprehensive earnings	93,199	200,951
Common stock related to ESOP	(4,045,233)	(3,484,549)
Total stockholders’ equity	16,522,259	15,757,218
Noncontrolling interests	42,228	44,097
Total equity	20,609,720	19,285,864
Total liabilities and stockholders' equity	$ 29,446,420	$ 28,094,077