Additional equity interest percentage acquired.

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- Definition

Business acquisition, Number of facilities.

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Business acquisition number of leading brands.

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- Definition

Business combination acquisition of noncontrolling interest fair value percentage.

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No definition available.

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- Definition

Business combination recognized identifiable assets acquired and liabilities assumed percentage.

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No definition available.

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- Definition

Implied percentage to determine fair value of noncontrolling interest.

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No definition available.

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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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- 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

In a business combination achieved in stages, this element represents the amount of loss recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

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No definition available.

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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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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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No definition available.

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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
	Oct. 27, 2023	Oct. 26, 2023 USD ($)	Jun. 24, 2022 USD ($)	Feb. 01, 2022 USD ($)	Aug. 20, 2021 USD ($) Distributioncenter	Aug. 09, 2021 USD ($) Facility Brand	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Business Acquisition [Line Items]
Goodwill							$ 3,968,847	$ 3,920,060	$ 2,827,344
Acquisitions net of cash acquired							$ 70,824	3,553,191	1,426,424
Nucor JFE Steel Mexico [Member]
Business Acquisition [Line Items]
Business combination noncontrolling interest fair value percentage not acquired by Nucor	49.00%
Implied percentage to determine fair value of noncontrolling interest	100.00%
Additional equity investment interest percent acquired	1.00%						1.00%
Noncontrolling interest, ownership percentage by parent	51.00%	50.00%					51.00%
Nucor JFE Steel Mexico [Member] \| Marketing, Administrative and Other Expenses [Member]
Business Acquisition [Line Items]
Acquisition remeasured loss		$ 21,000
Steel Products [Member]
Business Acquisition [Line Items]
Goodwill							$ 2,514,172	2,510,045	1,439,874
C.H.I. Overhead Doors [Member]
Business Acquisition [Line Items]
Business acquisition, purchase price			$ 3,000,000
Goodwill			1,033,192
Goodwill recognized for tax purposes			5,600
C.H.I. Overhead Doors [Member] \| Steel Products [Member]
Business Acquisition [Line Items]
Goodwill			$ 1,040,000
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							$ 70,800	$ 169,600	$ 134,800