v3.25.2
Stock-Based Compensation - Summary of Nucor's Restricted Stock Unit ("RSU") Activity (Detail) - Restricted Stock Units [Member]
shares in Thousands
6 Months Ended
Jul. 05, 2025
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unvested at beginning of year, Shares | shares 1,021
Granted, Shares | shares 624
Vested, Shares | shares (653)
Canceled, Shares | shares (14)
Unvested at July 5, 2025, Shares | shares 978
Unvested at beginning of year, Grant Date Fair Value Per Share | $ / shares $ 144.89
Granted, Grant Date Fair Value Per Share | $ / shares 109.36
Vested, Grant Date Fair Value Per Share | $ / shares 134.4
Canceled, Grant Date Fair Value Per Share | $ / shares 146.7
Unvested at July 5, 2025, Grant Date Fair Value Per Share | $ / shares $ 129.19