CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 29, 2018	Dec. 30, 2017
Current assets:
Cash and cash equivalents	$ 616,283	$ 579,925
Short-term investments	575,195	915,579
Trade receivables	649,945	671,414
Inventories	1,752,610	1,876,519
Prepaid expenses	49,781	41,484
Total current assets	3,643,814	4,084,921
Long-term investments	6,278,318	5,517,732
Other noncurrent assets	502,556	583,149
Property, plant and equipment	14,089,076	13,085,492
Accumulated depreciation	(5,515,016)	(5,087,788)
Net property, plant and equipment	8,574,060	7,997,704
Total assets	18,998,748	18,183,506
Current liabilities:
Accounts payable	1,754,822	1,754,706
Accrued expenses:
Contributions to Retirement Plans	441,513	517,493
Self-insurance reserves	141,882	137,100
Salaries and wages	272,712	124,423
Other	494,300	329,420
Current portion of long-term debt	4,895	37,873
Federal and state income taxes	23,524	241,299
Total current liabilities	3,133,648	3,142,314
Deferred income taxes	399,678	360,952
Self-insurance reserves	224,529	218,598
Accrued postretirement benefit cost	113,661	113,461
Long-term debt	163,928	155,201
Other noncurrent liabilities	71,412	84,361
Total liabilities	4,106,856	4,074,887
Common stock related to Employee Stock Ownership Plan (ESOP)	3,188,497	3,053,138
Stockholders’ equity:
Common stock of $1 par value. Authorized 1,000,000 shares; issued 740,595 shares in 2018 and 733,440 shares in 2017	740,595	733,440
Additional paid-in capital	3,439,412	3,139,647
Retained earnings	11,669,368	10,044,564
Treasury stock at cost, 22,012 shares in 2018	(921,510)	0
Accumulated other comprehensive (losses) earnings	(72,372)	152,636
Common stock related to ESOP	(3,188,497)	(3,053,138)
Total stockholders’ equity	11,666,996	11,017,149
Noncontrolling interests	36,399	38,332
Total equity	14,891,892	14,108,619
Total liabilities and stockholders' equity	$ 18,998,748	$ 18,183,506