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Current Liabilities - Additional Information (Detail) - USD ($) $ in Millions | Oct. 04, 2025 | Dec. 31, 2024
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Liabilities, Current [Abstract] |  |
Book overdrafts | $ 126 | $ 146
Dividends payable, current | 127 | 129
Accrued vacation and holiday pay | $ 244 | $ 231

X
- Definition Carrying value as of the balance sheet date of obligations incurred and payable for unused vacation time and holiday pay owed to employees based on the entity's vacation and holiday benefit given to its employees. + References No definition available. + Details
Name: | nue_AccruedVacationAndHolidayPay
Namespace Prefix: | nue_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The carrying value of outstanding disbursements (checks) written and issued by the entity but have not been presented to the financial institution. + References No definition available. + Details
Name: | nue_BookOverdrafts
Namespace Prefix: | nue_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: 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(20)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_DividendsPayableCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_LiabilitiesCurrentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration