Condensed Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Apr. 05, 2025	Mar. 30, 2024
Income Statement [Abstract]
Net sales	$ 7,830	$ 8,137
Costs, expenses and other:
Cost of products sold	7,225	6,614
Marketing, administrative and other expenses	281	345
Equity in earnings of unconsolidated affiliates	(4)	(9)
Losses and impairments of assets	29
Interest expense (income), net	14	(38)
Costs, expenses and other, total	7,545	6,912
Earnings before income taxes and noncontrolling interests	285	1,225
Provision for income taxes	59	266
Net earnings before noncontrolling interests	226	959
Earnings attributable to noncontrolling interests	70	114
Net earnings attributable to Nucor stockholders	$ 156	$ 845
Net earnings per share:
Basic	$ 0.67	$ 3.46
Diluted	$ 0.67	$ 3.46
Average shares outstanding:
Basic	232.7	243.1
Diluted	232.9	243.5