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Cover Page - shares
 6 Months Ended
Jun. 30, 2024
Aug. 14, 2024
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Jun. 30, 2024  
Document Fiscal Year Focus 2024  
Document Fiscal Period Focus Q2  
Current Fiscal Year End Date --12-31  
Entity File Number 001-41816  
Entity Registrant Name NORTHANN CORP.  
Entity Central Index Key 0001923780  
Entity Incorporation, State or Country Code NV  
Entity Tax Identification Number 88-1513509  
Entity Address, Address Line One c/o Northann Distribution Center Inc.  
Entity Address, Address Line Two 9820 Dino Drive, Suite 110  
Entity Address, City or Town Elk Grove  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 95624  
City Area Code 916  
Local Phone Number 573 3803  
Title of 12(b) Security Common Stock, $0.001 par value  
Trading Symbol NCL  
Security Exchange Name NYSEAMER  
Entity Current Reporting Status No  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company true  
Entity Common Stock, Shares Outstanding   24,240,000