v3.26.1
Cover - shares
 6 Months Ended
Jun. 30, 2026
Aug. 07, 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 001-43057  
Registrant Name BITGO HOLDINGS, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 82-3998490  
Entity Address, Address Line One 101 S. Reid Street, Suite 307, PMB# 9793  
Entity Address, City or Town Sioux Falls  
Entity Address, State or Province SD  
Entity Address, Postal Zip Code 57103  
City Area Code 650  
Local Phone Number 847-0009  
Title of 12(b) Security Class A Common Stock, $0.0001 par value  
Trading Symbol BTGO  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Central Index Key 0001740604  
Amendment Flag false  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --12-31  
Common Class A    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   108,690,240
Common Class B    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   8,855,382