Debt instrument maturity year.

No definition available.

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Namespace Prefix:	nue_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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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Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Balance Type:	debit
Period Type:	instant

- Definition

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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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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Namespace Prefix:
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- Details

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- Details

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- Details

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- Details

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Debt and Other Financing Arrangements - Additional Information (Detail) - USD ($) $ in Millions	Mar. 05, 2025	Mar. 11, 2025	Feb. 28, 2025
Debt Instrument [Line Items]
Net proceeds of debt issuance and sale of notes after expenses and the underwriting discount	$ 997
Debt issuance and sale costs of Notes	$ 9
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility, borrowing capacity		$ 2,250	$ 1,750
Maturity date	Mar. 11, 2030
Notes, 4.650%, due 2030 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 500
Debt instrument interest rate	4.65%
Debt instrument - maturity year	2030
Notes, 5.100%, due 2035 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 500
Debt instrument interest rate	5.10%
Debt instrument - maturity year	2035
Notes, 2.000%, due 2025 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 500
Debt instrument interest rate	2.00%
Debt instrument - maturity year	2025
Notes, 3.950%, due 2025 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 500
Debt instrument interest rate	3.95%
Debt instrument - maturity year	2025