v3.25.2
Cover
Aug. 15, 2025
Document Information [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Aug. 15, 2025
Entity File Number 001-35095
Entity Registrant Name UNITED COMMUNITY BANKS, INC.
Entity Central Index Key 0000857855
Entity Tax Identification Number 58-1807304
Entity Incorporation, State or Country Code GA
Entity Address, Address Line One 200 East Camperdown Way
Entity Address, City or Town Greenville
Entity Address, State or Province SC
Entity Address, Postal Zip Code 29601
City Area Code 800
Local Phone Number 822-2651
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock [Member]  
Document Information [Line Items]  
Title of 12(b) Security Common stock, par value $1 per share
Trading Symbol UCB
Security Exchange Name NYSE
Depositary Shares [Member]  
Document Information [Line Items]  
Title of 12(b) Security Depositary shares, each representing 1/1000th interest in a share of Series I Non-Cumulative Preferred Stock
Trading Symbol UCB PRI
Security Exchange Name NYSE