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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2020
Fair Value Disclosures [Abstract] |
Schedule of Financial Assets and Liabilities Measured at Fair Value | The following table summarizes information regarding Nucor’s financial assets and liabilities that are measured at fair value. Nucor does not have any non-financial assets or liabilities that are measured at fair value on a recurring basis.
|  |  |  |  |  | (in thousands) |
|  |  |  |  | Fair Value Measurements at Reporting Date Using |
|  |  |  |  |  | Quoted Prices |  |  |  |  |  |  |  |  |
|  |  |  |  |  | in Active |  |  | Significant |  |  |  |  |
|  | Carrying |  |  | Markets for |  |  | Other |  |  | Significant |
|  | Amount in |  |  | Identical |  |  | Observable |  |  | Unobservable |
|  | Consolidated |  |  | Assets |  |  | Inputs |  |  | Inputs |
Description |  | Balance Sheets |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |
As of December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  | $ | 2,186,820 |  |  | $ | 2,186,820 |  |  | $ | — |  |  | $ | — |
Short-term investments |  |  | 408,004 |  |  |  | 408,004 |  |  |  | — |  |  |  | — |
Restricted cash and cash equivalents |  |  | 115,258 |  |  |  | 115,258 |  |  |  | — |  |  |  | — |
Total assets |  | $ | 2,710,082 |  |  | $ | 2,710,082 |  |  | $ | — |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative contracts |  | $ | (14,361 | ) |  | $ | — |  |  | $ | (14,361 | ) |  | $ | — |
As of December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  | $ | 1,229,000 |  |  | $ | 1,229,000 |  |  | $ | — |  |  | $ | — |
Short-term investments |  |  | 300,040 |  |  |  | 300,040 |  |  |  | — |  |  |  | — |
Total assets |  | $ | 1,529,040 |  |  | $ | 1,529,040 |  |  | $ | — |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative contracts |  | $ | (19,599 | ) |  | $ | — |  |  | $ | (19,599 | ) |  | $ | — |

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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