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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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Debt and Other Financing Arrangements - Additional Information (Detail) - USD ($)					12 Months Ended
	Aug. 15, 2022	May 23, 2022	Apr. 25, 2022	Mar. 11, 2022	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Annual aggregate long-term debt maturities - 2024					$ 60,000,000
Annual aggregate long-term debt maturities - 2025					1,010,000,000.00
Annual aggregate long-term debt maturities - 2026					61,500,000
Annual aggregate long-term debt maturities - 2027					528,000,000
Annual aggregate long-term debt maturities - 2028					549,500,000
Annual aggregate long-term debt maturities - thereafter					4,530,000,000
Net proceeds of debt issuance and sale of notes after expenses and the underwriting discount		$ 991,900,000		$ 1,090,000,000.00
Debt issuance and sale costs of Notes		5,900,000		15,300,000	32,017,000	$ 43,471,000
Redemption amount					10,000,000	1,111,000,000
Short-term borrowings					119,211,000	49,081,000
Letters of credit outstanding					57,700,000	43,500,000
Harris Steel [Member]
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity					18,700,000
Line of credit					0	0
Nucor Trading S.A. [Member]
Debt Instrument [Line Items]
Short-term borrowings					24,200,000	49,100,000
NJSM [Member]
Debt Instrument [Line Items]
Short-term borrowings					95,000,000
Notes, 3.125%, due 2032 [Member]
Debt Instrument [Line Items]
Debt instrument face amount				$ 550,000,000	$ 550,000,000	550,000,000
Debt instrument interest rate				3.125%	3.125%
Debt instrument - maturity year				2032	2032
Notes, 3.850%, due 2052 [Member]
Debt Instrument [Line Items]
Debt instrument face amount				$ 550,000,000	$ 550,000,000	550,000,000
Debt instrument interest rate				3.85%	3.85%
Debt instrument - maturity year				2052	2052
Notes, 4.125%, due 2022 [Member]
Debt Instrument [Line Items]
Debt instrument face amount				$ 600,000,000
Debt instrument interest rate				4.125%
Debt instrument - maturity year				2022
Redemption amount	$ 600,000,000
Notes, 4.000%, due 2023 [Member]
Debt Instrument [Line Items]
Debt instrument face amount				$ 500,000,000
Debt instrument interest rate				4.00%
Debt instrument - maturity year				2023
Redemption amount			$ 500,000,000
Notes, 3.950%, due 2025 [Member]
Debt Instrument [Line Items]
Debt instrument face amount		$ 500,000,000			$ 500,000,000	500,000,000
Debt instrument interest rate		3.95%			3.95%
Debt instrument - maturity year		2025			2025
Notes, 4.300%, due 2027 [Member]
Debt Instrument [Line Items]
Debt instrument face amount		$ 500,000,000			$ 500,000,000	500,000,000
Debt instrument interest rate		4.30%			4.30%
Debt instrument - maturity year		2027			2027
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity					$ 1,750,000,000
Line of revolving credit facility expiration date					Nov. 05, 2026
Ratio on the limit of funded debt to capital on credit facility					60.00%
Line of credit					$ 0	$ 0
Ratio funded debt to total capital					24.00%
Letter of Credit [Member]
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity					$ 100,000,000
Additional Commitments at Nucor's Election in Accordance with Terms of Credit Agreement [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility availability					500,000,000
Revolving Loans For Nucor Subsidiaries [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity					$ 500,000,000