Business acquisition, Number of facilities.

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- Definition

Business acquisition number of leading brands.

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- Definition

Business combination acquisition of noncontrolling interest fair value percentage.

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- Definition

Business combination recognized identifiable assets acquired and liabilities assumed percentage.

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- Definition

Implied percentage to determine fair value of noncontrolling interest.

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- Definition

Number of distribution centers.

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No definition available.

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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.

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No definition available.

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- Definition

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

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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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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.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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Acquisitions - Additional Information (Details) $ in Thousands					12 Months Ended
	Jun. 24, 2022 USD ($)	Feb. 01, 2022 USD ($)	Aug. 20, 2021 USD ($) DistributionCenter	Aug. 09, 2021 USD ($) Brand Facility	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Business Acquisition [Line Items]
Goodwill					$ 3,920,060	$ 2,827,344	$ 2,229,672
Acquisitions net of cash acquired					3,553,191	1,426,424	88,071
C.H.I. Overhead Doors [Member]
Business Acquisition [Line Items]
Business acquisition, purchase price	$ 3,000,000
Goodwill	1,037,173
Goodwill recognized for tax purposes	$ 5,600
CSI [Member]
Business Acquisition [Line Items]
Business acquisition, purchase price		$ 400,000
Goodwill		$ 62,011
Acquired controlling ownership percentage		51.00%
Percentage of assets and liabilities		100.00%
Business combination noncontrolling interest fair value percentage not acquired by Nucor		49.00%
Implied percentage to determine fair value of noncontrolling interest		100.00%
CSI [Member] \| Vale S.A [Member]
Business Acquisition [Line Items]
Acquired controlling ownership percentage		50.00%
CSI [Member] \| JFE Steel Corporation [Member]
Business Acquisition [Line Items]
Acquired controlling ownership percentage		1.00%
Cornerstone Building Brands, Inc., Insulated Metal Panels ("IMP") [Member]
Business Acquisition [Line Items]
Business acquisition, purchase price				$ 1,000,000
Goodwill				$ 480,167
Business acquisition number of leading brands \| Brand				2
Cornerstone Building Brands, Inc., Insulated Metal Panels ("IMP") [Member] \| North America [Member]
Business Acquisition [Line Items]
Business acquisition, Number of facilities \| Facility				7
Hannibal Industries Inc [Member]
Business Acquisition [Line Items]
Business acquisition, purchase price			$ 370,000
Goodwill			$ 84,922
Number of distribution centers \| DistributionCenter			3
Hannibal Industries Inc [Member] \| Employee Stock Ownership Plan [Member]
Business Acquisition [Line Items]
Acquired controlling ownership percentage			100.00%
Other Acquisitions [Member]
Business Acquisition [Line Items]
Acquisitions net of cash acquired					$ 169,600	$ 134,800	$ 88,100