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Cover - USD ($)
 12 Months Ended
Dec. 31, 2023
Feb. 23, 2024
Jun. 30, 2023
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-36041    
Entity Registrant Name INDEPENDENCE REALTY TRUST, INC.    
Entity Incorporation, State or Country Code MD    
Entity Tax Identification Number 26-4567130    
Entity Address, Address Line One 1835 Market Street    
Entity Address, Address Line Two Suite 2601    
Entity Address, City or Town Philadelphia    
Entity Address, State or Province PA    
Entity Address, Postal Zip Code 19103    
City Area Code 267    
Local Phone Number 270-4800    
Title of 12(b) Security Common Stock, par value $0.01 per share    
Trading Symbol IRT    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
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    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction false    
Entity Shell Company false    
Entity Public Float     $ 4,178,432,430
Entity Common Stock, Shares Outstanding   224,773,702  
Documents Incorporated by Reference
Portions of the proxy statement for registrant’s 2024 Annual Meeting of Stockholders are incorporated by reference in Part III of this Form 10-K.
    
Entity Central Index Key 0001466085    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Amendment Flag false