v3.25.3
Document and Entity Information Document
Oct. 22, 2025
Document Information [Line Items]  
Entity Address, Address Line One 14817 Oak Lane,
Entity Incorporation, State or Country Code DE
Document Type 8-K
Document Period End Date Oct. 22, 2025
Entity Registrant Name BankUnited, Inc.
City Area Code 305
Local Phone Number 569-2000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity File Number 001-35039
Entity Tax Identification Number 27-0162450
Entity Address, City or Town Miami Lakes,
Entity Address, State or Province FL
Entity Address, Postal Zip Code 33016
Amendment Flag false
Entity Central Index Key 0001504008
NEW YORK STOCK EXCHANGE, INC. [Member]  
Document Information [Line Items]  
Title of 12(b) Security Common Stock, $0.01 Par Value
Trading Symbol BKU
Security Exchange Name NYSE