Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Change in Net Carrying Amount of Goodwill by Segment

The change in the net carrying amount of goodwill for the years ended December 31, 2014 and 2013 by segment is as follows (in thousands):

	Steel Mills		Steel Products			Raw Materials		All Other			Total
Balance, December 31, 2012	$	407,045	$	805,416		$	703,225	$	88,852		$	2,004,538
Reclassifications		88,852		—			—		(88,852	)		—
Translation		—		(26,067	)		—		—			(26,067	)
Other		—		(4,863	)		—		—			(4,863	)
Balance, December 31, 2013		495,897		774,486			703,225		—			1,973,608
Acquisitions		98,505		—			—		—			98,505
Translation		—		(30,112	)		—		—			(30,112	)
Other		—		311			26,352		—			26,663
Balance, December 31, 2014	$	594,402	$	744,685		$	729,577	$	—		$	2,068,664

Schedule of Intangible Assets

Intangible assets with estimated lives of 5 to 22 years are amortized on a straight-line or accelerated basis and are comprised of the following (in thousands):

	December 31, 2014				December 31, 2013
	Gross Amount		Accumulated Amortization		Gross Amount		Accumulated Amortization
Customer relationships	$	1,199,942	$	454,353	$	1,147,786	$	391,254
Trademarks and trade names		158,584		48,356		151,332		40,397
Other		22,823		16,547		21,869		15,182
	$	1,381,349	$	519,256	$	1,320,987	$	446,833