v3.25.2
Cover
Jul. 14, 2025
Cover [Abstract]  
Document Type 8-K
Document Period End Date Jul. 14, 2025
Entity Registrant Name FB FINANCIAL CORPORATION
Entity Incorporation, State or Country Code TN
Entity File Number 001-37875
Entity Tax Identification Number 62-1216058
Entity Address, Address Line One 1221 Broadway
Entity Address, Address Line Two Suite 1300
Entity Address, City or Town Nashville
Entity Address, State or Province TN
Entity Address, Postal Zip Code 37203
City Area Code 615
Local Phone Number 564-1212
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $1.00 par value
Trading Symbol FBK
Security Exchange Name NYSE
Entity Emerging Growth Company false
Amendment Flag false
Entity Central Index Key 0001649749