Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2026	May 15, 2026
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2026
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	Q1
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	333-288565
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 Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Document Quarterly Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	MD
Class D Shares [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		1,027,295
Class I Shares [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		22,698,059
Class E Common Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		63,380,105
Class S Shares [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		0
Common Stock Class Y
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		11,353,567
Class T Shares [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		0
Class X Shares
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		0