CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets
Cash and equivalents	$ 1,095,701	$ 1,368,618
Accounts receivable, net	1,886,759	967,981
Accounts receivable-related parties	6,036	3,937
Inventories	2,894,970	1,843,548
Other current assets	104,106	74,363
Total current assets	5,987,572	4,258,447
Property, plant and equipment, net	4,654,192	4,105,569
Intangible assets, net	302,522	324,577
Goodwill	454,683	457,226
Other assets	137,016	119,743
Total assets	11,535,985	9,265,562
Current liabilities
Accounts payable	1,208,499	760,536
Accounts payable-related parties	11,938	8,919
Income taxes payable	80,167	2,386
Accrued payroll and benefits	406,538	201,778
Accrued interest	33,540	19,656
Accrued expenses	258,551	178,618
Current maturities of long-term debt	55,056	86,894
Total current liabilities	2,054,289	1,258,787
Long-term debt	3,019,175	3,015,782
Deferred income taxes	722,220	536,288
Other liabilities	117,367	106,479
Total liabilities	5,913,051	4,917,336
Commitments and contingencies
Redeemable noncontrolling interests	186,814	158,614
Equity
Common stock voting, $0.0025 par value; 900,000,000 shares authorized; 266,618,566 shares issued; and 199,778,688 and 210,914,264 shares outstanding, as of September 30, 2021 and December 31, 2020, respectively	648	648
Treasury stock, at cost; 66,839,878 and 55,704,302 shares, as of September 30, 2021 and December 31, 2020, respectively	(2,344,477)	(1,623,747)
Additional paid-in capital	1,219,438	1,207,392
Retained earnings	6,721,734	4,758,969
Accumulated other comprehensive income	10,583	1,902
Total Steel Dynamics, Inc. equity	5,607,926	4,345,164
Noncontrolling interests	(171,806)	(155,552)
Total equity	5,436,120	4,189,612
Total liabilities and equity	$ 11,535,985	$ 9,265,562