v3.26.1
Cover - shares
 6 Months Ended
Jun. 30, 2026
Aug. 05, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 001-39544  
Entity Registrant Name BAKKT, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 41-2324812  
Entity Address, Address Line One 3280 Peachtree Rd NE  
Entity Address, Address Line Two Suites 07-128, 07-130 & 07-132  
Entity Address, City or Town Atlanta  
Entity Address, State or Province GA  
Entity Address, Postal Zip Code 30305  
City Area Code 332  
Local Phone Number 203 3017  
Entity Current Reporting Status No  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding (in shares)   45,069,458
Amendment Flag false  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --12-31  
Entity Central Index Key 0001820302  
Class A Common Stock    
Document Information [Line Items]    
Title of 12(b) Security Class A Common Stock, par value $0.0001 per share  
Trading Symbol BKKT  
Security Exchange Name NYSE  
Warrants    
Document Information [Line Items]    
Title of 12(b) Security Warrants to purchase Class A Common Stock  
Trading Symbol BKKT WS  
Security Exchange Name NYSE