Segments (Tables)

9 Months Ended

Sep. 29, 2018

Segment Reporting [Abstract]

Segments

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

	Three Months (13 Weeks) Ended						Nine Months (39 Weeks) Ended
	Sept. 29, 2018			Sept. 30, 2017			Sept. 29, 2018			Sept. 30, 2017
Net sales to external customers:
Steel mills	$	4,401,610		$	3,214,921		$	12,151,843		$	9,809,492
Steel products		1,849,218			1,514,086			5,056,299			4,093,136
Raw materials		491,374			441,110			1,563,253			1,257,437
	$	6,742,202		$	5,170,117		$	18,771,395		$	15,160,065
Intercompany sales:
Steel mills	$	1,055,093		$	764,977		$	3,019,199		$	2,182,582
Steel products		56,185			30,828			142,862			87,193
Raw materials		2,923,196			2,333,840			8,687,408			6,971,831
Corporate/eliminations		(4,034,474	)		(3,129,645	)		(11,849,469	)		(9,241,606	)
	$	—		$	—		$	—		$	—
Earnings (loss) before income taxes and noncontrolling interests:
Steel mills	$	1,095,360		$	405,097		$	2,617,647		$	1,628,800
Steel products		138,688			86,908			380,268			237,463
Raw materials		(29,074	)		9,957			180,468			102,575
Corporate/eliminations		(282,472	)		(131,357	)		(826,268	)		(541,122	)
	$	922,502		$	370,605		$	2,352,115		$	1,427,716
	Sept. 29, 2018			Dec. 31, 2017
Segment assets:
Steel mills	$	8,764,717		$	7,671,217
Steel products		4,828,354			4,323,907
Raw materials		3,318,424			3,396,110
Corporate/eliminations		1,051,398			450,024
	$	17,962,893		$	15,841,258