v3.26.1
Cover - shares
 6 Months Ended
Jun. 30, 2026
Aug. 12, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 333-288565  
Entity Registrant Name J.P. Morgan Real Estate Income Trust, Inc.  
Entity Incorporation, State or Country Code MD  
Entity Tax Identification Number 87-3439916  
Entity Address, Address Line One 390 Madison Avenu  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10017  
City Area Code 212  
Local Phone Number 270-6000  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period true  
Entity Shell Company false  
Entity Central Index Key 0001893262  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Common Stock Class D    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   1,016,912
Common Stock Class I    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   23,615,833
Common Stock Class T    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   9,933
Common Stock Class E    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   64,121,187
Common Stock Class Y    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   12,183,017
Common Stock Class X    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   0
Common Stock Class S    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   0