CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 1,107,354	$ 438,755
Other comprehensive income - net unrealized gain on cash flow hedging derivatives, net of income tax of $3,557 and $1,176 for the three-month periods ended March 31, 2022 and 2021, respectively	11,387	3,765
Comprehensive income	1,118,741	442,520
Comprehensive income attributable to noncontrolling interests	(3,423)	(8,248)
Comprehensive income attributable to Steel Dynamics, Inc.	$ 1,115,318	$ 434,272