Segments (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Segments

Nucor’s results by segment for the first quarter of 2018 and 2017 were as follows (in thousands):

	Three Months (13 Weeks) Ended
	March 31, 2018			April 1, 2017
Net sales to external customers:
Steel mills	$	3,580,694		$	3,190,507
Steel products		1,468,711			1,212,357
Raw materials		519,014			412,315
	$	5,568,419		$	4,815,179
Intercompany sales:
Steel mills	$	898,326		$	658,360
Steel products		35,770			29,701
Raw materials		2,608,944			2,178,639
Corporate/eliminations		(3,543,040	)		(2,866,700	)
	$	—		$	—
Earnings (loss) before income taxes and noncontrolling interests:
Steel mills	$	560,503		$	644,183
Steel products		85,814			66,919
Raw materials		74,547			26,391
Corporate/eliminations		(204,952	)		(188,518	)
	$	515,912		$	548,975
	March 31, 2018			Dec. 31, 2017
Segment assets:
Steel mills	$	8,147,875		$	7,671,217
Steel products		4,407,472			4,323,907
Raw materials		3,567,900			3,396,110
Corporate/eliminations		(2,001	)		450,024
	$	16,121,246		$	15,841,258