Inventories	9 Months Ended
Sep. 30, 2023
Inventory Disclosure [Abstract]
Inventories	2. Inventories Inventories consisted of approximately 37% raw materials and supplies and 63% finished and semi-finished products at September 30, 2023 (37% and 63%, respectively, at December 31, 2022). Nucor’s manufacturing process consists of a continuous, vertically integrated process from which products are sold to customers at various stages throughout the process. Since most steel products can be classified as either finished or semi-finished products, these two categories of inventory are combined.

The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 330
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//330/tableOfContent

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