Nature of Operations and Basis of Presentation - Additional Information (Detail)	Dec. 31, 2023	Oct. 27, 2023	Oct. 26, 2023
Nucor-Yamato Steel Company [Member]
Summary Of Organization And Operations [Line Items]
Noncontrolling interest, ownership percentage by parent	51.00%
CSI [Member]
Summary Of Organization And Operations [Line Items]
Noncontrolling interest, ownership percentage by parent	51.00%
NJSM [Member]
Summary Of Organization And Operations [Line Items]
Noncontrolling interest, ownership percentage by parent	51.00%	51.00%	50.00%