CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 28, 2019	Dec. 29, 2018
Current assets:
Cash and cash equivalents	$ 1,294,010	$ 599,264
Short-term investments	453,132	560,992
Trade receivables	700,836	682,981
Inventories	1,760,688	1,848,735
Prepaid expenses	98,527	122,224
Total current assets	4,307,193	3,814,196
Long-term investments	7,145,508	6,016,438
Other noncurrent assets	458,207	515,265
Operating lease right-of-use assets	2,909,462	0
Property, plant and equipment	15,058,784	14,174,564
Accumulated depreciation	(5,949,761)	(5,537,947)
Net property, plant and equipment	9,109,023	8,636,617
Total assets	23,929,393	18,982,516
Current liabilities:
Accounts payable	1,815,800	1,864,604
Accrued expenses:
Contributions to retirement plans	467,665	540,760
Self-insurance reserves	153,719	145,241
Salaries and wages	291,702	132,916
Other	564,356	321,080
Current portion of long-term debt	26,354	4,954
Current portion of operating lease liabilities	332,648	0
Total current liabilities	3,652,244	3,009,555
Deferred income taxes	588,319	420,757
Self-insurance reserves	225,324	222,419
Accrued postretirement benefit cost	105,487	105,308
Long-term debt	145,300	162,711
Operating lease liabilities	2,562,160	0
Other noncurrent liabilities	127,010	67,102
Total liabilities	7,405,844	3,987,852
Common stock related to Employee Stock Ownership Plan (ESOP)	3,284,701	3,134,999
Stockholders’ equity:
Common stock of $1 par value. Authorized 1,000,000 shares; issued 722,126 shares in 2019 and 715,445 shares in 2018	722,126	715,445
Additional paid-in capital	3,738,659	3,458,004
Retained earnings	12,441,159	10,840,654
Treasury stock at cost, 11,391 shares in 2019	(500,296)	0
Accumulated other comprehensive earnings (losses)	83,911	(55,762)
Common stock related to ESOP	(3,284,701)	(3,134,999)
Total stockholders’ equity	13,200,858	11,823,342
Noncontrolling interests	37,990	36,323
Total equity	16,523,549	14,994,664
Total liabilities and stockholders' equity	$ 23,929,393	$ 18,982,516