Cover - shares	6 Months Ended
	Jun. 30, 2024	Aug. 12, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	000-56653
Entity Registrant Name	FRANKLIN BSP REAL ESTATE DEBT BDC
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	1345 Avenue of the Americas
Entity Address, Address Line Two	Suite 32A
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10105
Entity Tax Identification Number	99-1918767
City Area Code	212
Local Phone Number	588-6770
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		10,797,864.24
Entity Central Index Key	0002018545
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31