Subsequent Events	9 Months Ended
Oct. 02, 2021
Subsequent Events [Abstract]
Subsequent Events	18. Subsequent Events On November 5, 2021, Nucor amended and restated its revolving credit facility to increase the borrowing capacity from $1.50 billion to $1.75 billion and to extend its maturity date to November 5, 2026. This facility remains undrawn. On November 5, 2021, Nucor completed an offer to exchange its existing 2.979% Notes due 2055 (the “2055 Notes”) that have not been registered under the Securities Act of 1933, as amended (the “Securities Act”) for a like principal amount of notes having terms substantially identical as the 2055 Notes and that are registered under the Securities Act.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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