CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets
Cash and equivalents	$ 160,982	$ 361,363
Accounts receivable, net	741,309	859,835
Accounts receivable related parties	28,432	42,990
Inventories	1,453,242	1,618,419
Deferred income taxes	33,414	35,503
Other current assets	34,846	55,655
Total current assets	2,452,225	2,973,765
Property, plant and equipment, net	3,085,587	3,123,906
Restricted cash	19,242	19,312
Intangible assets, net	364,620	370,669
Goodwill	743,528	745,158
Other assets	70,636	78,217
Total assets	6,735,838	7,311,027
Current liabilities
Accounts payable	367,267	489,791
Accounts payable-related parties	9,695	21,265
Income taxes payable	5,116	6,086
Accrued payroll and benefits	66,427	128,968
Accrued interest	51,800	50,405
Accrued expenses	87,302	107,607
Current maturities of long-term debt	30,727	46,460
Total current liabilities	618,334	850,582
Long-term debt
Senior term loan	234,375	237,500
Senior notes	2,350,000	2,700,000
Other long-term debt	39,069	40,206
Total long-term debt	2,623,444	2,977,706
Deferred income taxes	555,031	542,033
Other liabilities	15,936	18,839
Commitments and contingencies
Redeemable noncontrolling interests	126,340	126,340
Equity
Common stock voting, $.0025 par value; 900,000,000 shares authorized; 261,539,685 and 261,420,126 shares issued; and 241,688,172 and 241,449,423 shares outstanding, as of March 31, 2015 and December 31, 2014, respectively	635	635
Treasury stock, at cost; 19,851,513 and 19,970,703 shares, as of March 31, 2015 and December 31, 2014, respectively	(396,517)	(398,898)
Additional paid-in capital	1,088,605	1,083,435
Retained earnings	2,225,354	2,227,843
Total Steel Dynamics, Inc. equity	2,918,077	2,913,015
Noncontrolling interests	(121,324)	(117,488)
Total equity	2,796,753	2,795,527
Total liabilities and equity	$ 6,735,838	$ 7,311,027