Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2022	Aug. 12, 2022
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Entity Registrant Name	J.P. Morgan Real Estate Income Trust, Inc.
Entity Central Index Key	0001893262
Current Fiscal Year End Date	--12-31
Entity File Number	333-265588
Entity Tax Identification Number	87-3439916
Entity Address, Address Line One	277 Park Avenue
Entity Address, Address Line Two	9th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10172
City Area Code	212
Local Phone Number	270-6000
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		932,687
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Document Quarterly Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	MD