Percentage of net revenue of the entity's external sales accounted for by the reportable unit.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

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-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8672-108599

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- Definition

As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References

No definition available.

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- Definition

Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

+ References

No definition available.

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Description of the Business and Significant Accounting Policies (Description of the Business) (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021	Jun. 30, 2022 USD ($) segment	Jun. 30, 2021	Dec. 31, 2021 USD ($)	Apr. 01, 2022
Segment Reporting Information
Number of reportable segments \| segment			3
Redeemable noncontrolling interests	$ 168,303		$ 168,303		$ 211,414
United Steel Supply, LLC
Segment Reporting Information
Acquisition of interest (as a percent)						12.50%
Steel Operations
Segment Reporting Information
Percentage of external net sales	67.00%	72.00%	67.00%	72.00%
Metals Recycling Operations
Segment Reporting Information
Percentage of external net sales	10.00%	13.00%	10.00%	13.00%
Steel Fabrication Operations
Segment Reporting Information
Percentage of external net sales	17.00%	7.00%	17.00%	7.00%
United Steel Supply, LLC
Segment Reporting Information
Noncontrolling interest, ownership percentage	87.50%
Redeemable noncontrolling interests	$ 57,100		$ 57,100		$ 100,200
Mesabi Nugget
Segment Reporting Information
Noncontrolling interest, ownership percentage			85.00%		85.00%
Redeemable noncontrolling interests	$ 111,200		$ 111,200		$ 111,200