Employee Benefit Plan	3 Months Ended
Apr. 04, 2026
Retirement Benefits [Abstract]
Employee Benefit Plan	9. Employee Benefit Plan Nucor makes contributions to a Profit Sharing and Retirement Savings Plan for qualified employees based on the profitability of the Company. Nucor’s expense for these benefits totaled $105 million and $31 million in the first quarter of 2026 and 2025, respectively. The related liability for these benefits is included in salaries, wages and related accruals in the condensed consolidated balance sheets.

The entire disclosure for retirement benefits.

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