Cover	Sep. 19, 2025
Cover [Abstract]
Document Type	8-K
Document Period End Date	Sep. 19, 2025
Registrant Name	FRANKLIN BSP REAL ESTATE DEBT BDC
Entity Incorporation, State or Country Code	DE
Entity File Number	814-01736
Entity Tax Identification Number	99-1918767
Entity Address, Address Line One	One Madison Avenue
Entity Address, Address Line Two	Suite 1600
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10010
City Area Code	212
Local Phone Number	588-6770
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Central Index Key	0002018545
Amendment Flag	false