CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets
Cash and equivalents	$ 361,363	$ 395,156
Accounts receivable, net of related allowances of $12,646 and $11,004 as of December 31, 2014 and 2013, respectively	859,835	664,208
Accounts receivable related parties	42,990	56,392
Inventories	1,618,419	1,314,747
Deferred income taxes	35,503	17,964
Other current assets	55,655	25,167
Total current assets	2,973,765	2,473,634
Property, plant and equipment, net	3,123,906	2,226,134
Restricted cash	19,312	23,827
Intangible assets, net of accumulated amortization of $241,731 and $215,341 as of December 31, 2014 and 2013, respectively	370,669	386,159
Goodwill	745,158	731,996
Other assets	78,217	91,256
Total assets	7,311,027	5,933,006
Current liabilities
Accounts payable	489,791	404,605
Accounts payable-related parties	21,265	10,327
Income taxes payable	6,086	4,023
Accrued payroll and benefits	128,968	93,432
Accrued interest	50,405	31,363
Accrued expenses	107,607	89,884
Current maturities of long-term debt	46,460	341,544
Total current liabilities	850,582	975,178
Long-term debt
Senior term loan	237,500	220,000
Senior notes	2,700,000	1,500,000
Other long-term debt	40,206	46,045
Total long-term debt	2,977,706	1,766,045
Deferred income taxes	542,033	556,038
Other liabilities	18,839	23,376
Commitments and contingencies
Redeemable noncontrolling interests	126,340	116,514
Equity
Common stock voting, $.0025 par value; 900,000,000 shares authorized; 261,420,126 and 258,840,350 shares issued; and 241,449,423 and 222,867,408 shares outstanding, as of December 31, 2014 and 2013, respectively	635	645
Treasury stock, at cost; 19,970,703 and 35,972,942 shares, as of December 31, 2014, and 2013, respectively	(398,898)	(718,529)
Additional paid-in capital	1,083,435	1,085,694
Retained earnings	2,227,843	2,179,513
Total Steel Dynamics, Inc. equity	2,913,015	2,547,323
Noncontrolling interests	(117,488)	(51,468)
Total equity	2,795,527	2,495,855
Total liabilities and equity	$ 7,311,027	$ 5,933,006