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Quarterly Information (Unaudited) | 12 Months Ended
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Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Information (Unaudited) | 25. Quarterly Information (Unaudited)
|  | (in thousands, except per share data) |
|  | Year Ended December 31, 2020 |
|  | First Quarter |  |  | Second Quarter |  |  | Third Quarter |  |  | Fourth Quarter |
Net sales |  | $ | 5,624,337 |  |  | $ | 4,327,306 |  |  | $ | 4,927,960 |  |  | $ | 5,260,055 |
Gross margin |  |  | 629,268 |  |  |  | 377,959 |  |  |  | 502,195 |  |  |  | 718,528 |
Net earnings (1) |  |  | 54,379 |  |  |  | 133,153 |  |  |  | 222,630 |  |  |  | 425,866 |
Net earnings attributable to Nucor stockholders (1) |  |  | 20,331 |  |  |  | 108,881 |  |  |  | 193,415 |  |  |  | 398,843 |
Net earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.07 |  |  | $ | 0.36 |  |  | $ | 0.63 |  |  | $ | 1.31 |
Diluted |  | $ | 0.07 |  |  | $ | 0.36 |  |  | $ | 0.63 |  |  | $ | 1.30 |
|  | (in thousands, except per share data) |
|  | Year Ended December 31, 2019 |
|  | First Quarter |  |  | Second Quarter |  |  | Third Quarter |  |  | Fourth Quarter |
Net sales |  | $ | 6,096,624 |  |  | $ | 5,895,986 |  |  | $ | 5,464,502 |  |  | $ | 5,131,746 |
Gross margin (2) |  |  | 895,892 |  |  |  | 775,494 |  |  |  | 572,511 |  |  |  | 435,188 |
Net earnings (2) |  |  | 530,793 |  |  |  | 412,277 |  |  |  | 293,587 |  |  |  | 134,253 |
Net earnings attributable to Nucor stockholders (2) |  |  | 501,806 |  |  |  | 386,483 |  |  |  | 275,031 |  |  |  | 107,823 |
Net earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 1.63 |  |  | $ | 1.26 |  |  | $ | 0.90 |  |  | $ | 0.35 |
Diluted |  | $ | 1.63 |  |  | $ | 1.26 |  |  | $ | 0.90 |  |  | $ | 0.35 |
(1) | First quarter results include losses on assets of $287.8 million related to our investment in Duferdofin Nucor. Third quarter results include a restructuring charge of $16.4 million related to the realignment of Nucor’s metal buildings business. Fourth quarter results include non-cash impairment charges totaling $130.2 million related to impairments of certain inventory and long-lived assets in the steel mills segment ($103.2 million) and the write-down of our unproved natural gas well assets in the raw materials segment ($27.0 million). Also included in fourth quarter results were losses on assets of $184.0 million related to the Duferdofin Agreement, a $201.9 million tax benefit related to our investment in Duferdofin Nucor, a $39.7 million net benefit related to state tax credits and a net benefit of $48.2 million for the CARES Act carryback provision.
(2) | First quarter results include a benefit of $33.7 million related to the gain on the sale of an equity method investment in the raw materials segment. Fourth quarter results include non-cash impairment charges totaling $66.9 million related to an impairment of our proved producing natural gas well assets in the raw materials segment ($35.0 million), certain property, plant and equipment in the steel mills segment ($20.0 million) and the write-down of certain intangible assets in the steel products segment ($11.9 million).

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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