Inventories - Additional Information (Detail)	Apr. 05, 2025	Dec. 31, 2024
Inventory Disclosure [Abstract]
Raw materials and supplies in inventory, percentage	39.00%	34.00%
Finished and semi-finished products in inventory, percentage	61.00%	66.00%

Finished and semi-finished products in inventory, percentage.

No definition available.

Name:	nue_FinishedAndSemiFinishedProductsInInventoryPercentage
Namespace Prefix:	nue_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant