Cover - shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Entity Addresses [Line Items]    
Document Type 20-F  
Amendment Flag false  
Document Registration Statement false  
Document Annual Report true  
Document Transition Report false  
Document Shell Company Report false  
Document Period End Date Dec. 31, 2021  
Document Fiscal Period Focus FY  
Document Fiscal Year Focus 2021  
Current Fiscal Year End Date --12-31  
Entity File Number 001-33311  
Entity Registrant Name Navios Maritime Holdings Inc.  
Entity Central Index Key 0001333172  
Entity Incorporation, State or Country Code 1T  
Entity Address, Address Line One Strathvale House, 90 N Church Street  
Entity Address, City or Town Grand Cayman  
Entity Address, Country KY  
Entity Address, Postal Zip Code KY1-1104  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Emerging Growth Company false  
Document Accounting Standard U.S. GAAP  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding 25,198,620  
Preferred Stock, Shares Outstanding 23,032 23,032
ICFR Auditor Attestation Flag true  
Auditor Firm ID 1387  
Auditor Name PricewaterhouseCoopers S.A.  
Auditor Location Athens, Greece  
Common Stock [Member]    
Entity Addresses [Line Items]    
Title of 12(b) Security Common Stock, par value $0.0001 per share  
Trading Symbol NM  
Security Exchange Name NYSE  
Series G Preferred Stock [Member]    
Entity Addresses [Line Items]    
Title of 12(b) Security American Depositary Shares  
No Trading Symbol Flag true  
Security Exchange Name NYSE  
Preferred Stock, Shares Outstanding 5,350 5,350
Series H Preferred Stock [Member]    
Entity Addresses [Line Items]    
Title of 12(b) Security American Depositary Shares  
No Trading Symbol Flag true  
Security Exchange Name NYSE  
Preferred Stock, Shares Outstanding 17,682 17,682
Business Contact [Member]    
Entity Addresses [Line Items]    
Entity Address, Address Line One One New York Plaza  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10004  
City Area Code 212  
Local Phone Number 859-8000  
Contact Personnel Name Mark Hayek