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Short-term Investments	12 Months Ended
Dec. 31, 2019
Text Block [Abstract]
Short-term Investments	4. Short-term Investments Nucor held $300.0 million of short-term investments as of December 31, 2019 (none at December 31, 2018). The investments held as of December 31, 2019 consisted of several certificates of deposit (“CD’s”), and corporate bonds, which were classified as available-for-sale. Interest income on the CD’s and corporate bonds was recorded as earned. No realized or unrealized gains or losses were incurred in 2019, 2018 or 2017.

Short-term Investments

12 Months Ended

Dec. 31, 2019

4. Short-term Investments

Nucor held $300.0 million of short-term investments as of December 31, 2019 (none at December 31, 2018). The investments held as of December 31, 2019 consisted of several certificates of deposit (“CD’s”), and corporate bonds, which were classified as available-for-sale. Interest income on the CD’s and corporate bonds was recorded as earned.

No realized or unrealized gains or losses were incurred in 2019, 2018 or 2017.