v3.25.1
Cover Page - shares
3 Months Ended
Mar. 31, 2025
Apr. 22, 2025
Entity Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2025  
Document Transition Report false  
Entity Registrant Name ARMOUR RESIDENTIAL REIT, INC.  
Entity Incorporation, State or Country Code MD  
Entity File Number 001-34766  
Entity Tax Identification Number 26-1908763  
Entity Address, Address Line One 3001 Ocean Drive, Suite 201  
Entity Address, City or Town Vero Beach  
Entity Address, State or Province FL  
Entity Address, Postal Zip Code 32963  
City Area Code 772  
Local Phone Number 617-4340  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding (in shares)   81,749,506
Entity Central Index Key 0001428205  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Preferred Stock, 7.00% Series C Cumulative Redeemable    
Entity Information [Line Items]    
Title of 12(b) Security Preferred Stock, 7.00% Series C Cumulative Redeemable  
Trading Symbol ARR-PRC  
Security Exchange Name NYSE  
Common Stock, $0.001 par value    
Entity Information [Line Items]    
Title of 12(b) Security Common Stock, $0.001 par value  
Trading Symbol ARR  
Security Exchange Name NYSE