Goodwill and Other Intangible Assets - Schedule of Change in Net Carrying Amount of Goodwill by Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Balance, beginning of period	$ 2,827,344	$ 2,229,672
Acquisitions	1,149,917	599,127
Divestitures	(39,466)
Translation	(17,735)	(1,455)
Balance, end of period	3,920,060	2,827,344
Steel Mills [Member]
Goodwill [Line Items]
Balance, beginning of period	613,175	612,470
Acquisitions	62,011	705
Balance, end of period	675,186	613,175
Steel Products [Member]
Goodwill [Line Items]
Balance, beginning of period	1,439,874	887,625
Acquisitions	1,087,906	553,704
Translation	(17,735)	(1,455)
Balance, end of period	2,510,045	1,439,874
Raw Materials [Member]
Goodwill [Line Items]
Balance, beginning of period	774,295	729,577
Acquisitions		44,718
Divestitures	(39,466)
Balance, end of period	$ 734,829	$ 774,295

Goodwill divestitures during period.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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