Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Net loss	$ (23,156)	$ (6,291)	$ (37,069)	$ (63,078)
Currency translation adjustment, net of tax	(324)	247	593	(372)
Unrealized gain (loss) on available-for-sale securities, net of tax	0	4	0	3
Comprehensive loss	(23,480)	(6,040)	(36,476)	(63,447)
Comprehensive loss attributable to noncontrolling interest	(8,353)	(3,265)	(14,772)	(35,847)
Comprehensive loss attributable to Bakkt Holdings, Inc.	$ (15,127)	$ (2,775)	$ (21,704)	$ (27,600)