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Document and Entity Information
6 Months Ended
Jul. 04, 2020
shares
Cover [Abstract]  
Document Type 10-Q
Amendment Flag false
Document Period End Date Jul. 04, 2020
Document Fiscal Year Focus 2020
Document Fiscal Period Focus Q2
Trading Symbol NUE
Entity Registrant Name NUCOR CORPORATION
Entity Central Index Key 0000073309
Current Fiscal Year End Date --12-31
Entity Filer Category Large Accelerated Filer
Entity Emerging Growth Company false
Entity Small Business false
Entity Current Reporting Status Yes
Entity Shell Company false
Entity Interactive Data Current Yes
Title of 12(b) Security Common Stock, par value $0.40 per share
Security Exchange Name NYSE
Entity Incorporation, State or Country Code DE
Document Quarterly Report true
Document Transition Report false
Entity File Number 1-4119
Entity Tax Identification Number 13-1860817
Entity Address, Address Line One 1915 Rexford Road
Entity Address, City or Town Charlotte
Entity Address, State or Province NC
Entity Address, Postal Zip Code 28211
City Area Code 704
Local Phone Number 366-7000
Entity Common Stock, Shares Outstanding 301,895,077