Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2023

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, 2023 and 2022 by segment is as follows:

	(in thousands)
	Steel		Steel			Raw
	Mills		Products			Materials			Total
Balance, December 31, 2021	$	613,175	$	1,439,874		$	774,295		$	2,827,344
Acquisitions		62,011		1,087,906			—			1,149,917
Divestitures		—		—			(39,466	)		(39,466	)
Translation		—		(17,735	)		—			(17,735	)
Balance, December 31, 2022		675,186		2,510,045			734,829			3,920,060
Acquisitions		—		(2,120	)		44,660			42,540
Translation		—		6,247			—			6,247
Balance, December 31, 2023	$	675,186	$	2,514,172		$	779,489		$	3,968,847

Schedule of Intangible Assets

Intangible assets with estimated useful lives of five to 25 years are amortized on a straight-line or accelerated basis and are comprised of the following:

	(in thousands)
	December 31, 2023				December 31, 2022
	Gross		Accumulated		Gross		Accumulated
	Amount		Amortization		Amount		Amortization
Customer relationships	$	4,190,156	$	1,295,778	$	4,174,724	$	1,087,834
Trademarks and trade names		372,153		168,363		364,106		142,363
Other		109,747		99,900		109,746		96,114
	$	4,672,056	$	1,564,041	$	4,648,576	$	1,326,311