CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash and equivalents	$ 1,245,165	$ 1,368,618
Accounts receivable, net	1,360,535	967,981
Accounts receivable-related parties	5,928	3,937
Inventories	2,217,534	1,843,548
Other current assets	67,744	74,363
Total current assets	4,896,906	4,258,447
Property, plant and equipment, net	4,340,411	4,105,569
Intangible assets, net	317,139	324,577
Goodwill	456,378	457,226
Other assets	117,062	119,743
Total assets	10,127,896	9,265,562
Current liabilities
Accounts payable	1,113,250	760,536
Accounts payable-related parties	21,422	8,919
Income taxes payable	52,969	2,386
Accrued payroll and benefits	182,044	201,778
Accrued interest	33,856	19,656
Accrued expenses	176,422	178,618
Current maturities of long-term debt	81,226	86,894
Total current liabilities	1,661,189	1,258,787
Long-term debt	3,016,200	3,015,782
Deferred income taxes	602,185	536,288
Other liabilities	113,125	106,479
Total liabilities	5,392,699	4,917,336
Commitments and contingencies
Redeemable noncontrolling interests	163,614	158,614
Equity
Common stock voting, $.0025 par value; 900,000,000 shares authorized; 266,618,566 shares issued; and 211,218,956 and 210,914,264 shares outstanding, as of March 31, 2021 and December 31, 2020, respectively	648	648
Treasury stock, at cost; 55,399,610 and 55,704,302 shares, as of March 31, 2021 and December 31, 2020, respectively	(1,614,866)	(1,623,747)
Additional paid-in capital	1,202,945	1,207,392
Retained earnings	5,134,398	4,758,969
Accumulated other comprehensive income (loss)	5,667	1,902
Total Steel Dynamics, Inc. equity	4,728,792	4,345,164
Noncontrolling interests	(157,209)	(155,552)
Total equity	4,571,583	4,189,612
Total liabilities and equity	$ 10,127,896	$ 9,265,562