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Current Liabilities - Additional Information (Detail) - USD ($) $ in Millions	Oct. 04, 2025	Dec. 31, 2024
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

X

- 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

X

- 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

X

- References

No definition available.

+ Details

Name:	us-gaap_LiabilitiesCurrentAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration