Cover [Abstract] Document Information [Table] Document Information [Table] Document Information [Line Items] Document Information [Line Items] Entity Registrant Name Entity Registrant Name Entity Small Business Entity Small Business Entity Filer Category Entity Filer Category Entity Emerging Growth Company Entity Emerging Growth Company Entity Ex Transition Period Entity Ex Transition Period Amendment Flag Amendment Flag Entity Central Index Key Entity Central Index Key Document Type Amendment Description Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Voting Class B [Member] Class B Voting Units Voting Class B Voting Class C [Member] Class C Voting Units Voting Class C Common Class A [Member] Class A Common Stock Class A [Member] Common Class A Voting Class A [Member] Class A Voting Units Voting Class A Common Class V [Member] Class V Common Stock Common Class V Common Class B [Member] Common Class B [Member] Class B [Member] Class B Ordinary Shares Statement [Line Items] Statement [Line Items] Assets [Abstract] Assets Assets, Current [Abstract] Current Assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Restricted Cash, Current Restricted cash Funds Held for Clients Customer funds Other Assets, Current Other current assets Other current assets Assets, Current Total current assets Accounts Receivable, after Allowance for Credit Loss, Current Accounts receivable, net Total Investment In Shares Of Affiliate Stock, Current Investment in shares of affiliate stock, current Investment In Shares Of Affiliate Stock, Current Deposits Assets, Current Deposits with clearinghouse, current (affiliate in Predecessor period) Cash Cash Prepaid Expense, Current Prepaid expenses Property, Plant and Equipment, Net Property, equipment and software, net Total Goodwill Goodwill Goodwill, beginning balance Goodwill, ending balance Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Net Carrying Amount Deposits Assets, Noncurrent Deposits with clearinghouse, noncurrent (affiliate in Predecessor period) Other Assets, Noncurrent Other assets Other assets Assets Total assets Assets Held-in-trust, Noncurrent Cash and investments held in Trust Account Assets held in trust non current Liabilities and Equity [Abstract] Liabilities, Stockholders' Equity and Members' Equity Liabilities, Current [Abstract] Current liabilities: Due to Related Parties, Current Due to related party (affiliate in Predecessor period) Accounts Payable and Accrued Liabilities, Current Accounts payable and accrued liabilities Total Liabilities, Current Total current liabilities Customer Funds Payable, Current Customer funds payable Customer Funds Payable, Current Contract with Customer, Liability, Current Deferred revenue, current Other Liabilities, Current Other current liabilities Total Accrued Offering Costs Current Accrued offering costs Accrued offering costs current. Contract with Customer, Liability, Noncurrent Deferred revenue, noncurrent Warrant Liability Warrant liability Warrant Liability Warrant Liability Deferred Income Tax Liabilities, Net Deferred tax liabilities, net Other Liabilities, Noncurrent Other noncurrent liabilities Total Liabilities Total liabilities Commitments and Contingencies Commitments and Contingencies (Note 14) Temporary Equity [Abstract] Mezzanine equity: Temporary Equity, Carrying Amount, Attributable to Parent Incentive units (156,000,000 authorized, 103,318,325 unvested units and 85,875,000 unvested units issued and outstanding as of December 31, 2020) Mezzanine equity beginning balance Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Stockholders' equity: Members' Capital Voting units, value Warrants and Rights Outstanding Class B warrant (Note 10) Warrants outstanding Common Stock, Value, Outstanding Common stock, value Additional Paid in Capital Additional paid-in capital Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income (loss) Retained Earnings (Accumulated Deficit) Accumulated deficit Stockholders' Equity Attributable to Parent Total stockholders' equity and members' equity. Stockholders' Equity Attributable to Noncontrolling Interest Noncontrolling interest Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total equity Beginning balance Ending balance Common Stock, Value, Issued Common Stock Liabilities and Equity Total liabilities, stockholders' equity and members' equity Deferred Compensation Liability, Classified, Noncurrent Deferred underwriting fee payable Deferred underwriting fee payable Temporary Equity, Aggregate Amount of Redemption Requirement Class A ordinary shares subject to possible redemption, 20,737,202 shares at $10.00 per share as of October 14, 2021 and December 31, 2020 Class A ordinary shares subject to possible redemption Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] VPC IMPACT ACQUISITION HOLDINGS [Member] VPC IMPACT ACQUISITION HOLDINGS Temporary Equity, Shares Authorized Incentive units, shares authorized Temporary Equity, Shares Issued Incentive units, shares issued Temporary equity shares issued Temporary Equity, Shares Outstanding Incentive units, shares outstanding Incentive units beginning balance (in shares) Temporary equity shares outstanding Common Unit, Authorized Voting units, shares authorized Common Unit, Issued Voting units, shares issued Common Unit, Outstanding Voting units, shares outstanding Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued (in shares) Common Stock, Shares, Outstanding Common stock, shares outstanding Preferred Stock, Par or Stated Value Per Share Preferred stock, par value (in dollars per share) Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Shares Outstanding Preferred Stock, Share Outstanding Preferred stock, shares outstanding Preferred Stock, Shares Issued Preferred stock, shares issued Temporary Equity, Par or Stated Value Per Share Temporary equity par value (in usd per share) Income Statement [Abstract] Revenues [Abstract] Revenues: Revenue from Contract with Customer, Excluding Assessed Tax Net revenues (includes related party net revenues of $71 and affiliate net revenues of $136 and $(2,007), respectively) (1) Net revenue Total revenue Operating Expenses [Abstract] Operating expenses: Labor and Related Expense Compensation and benefits Impairment of Long-Lived Assets Held-for-use Impairment of long-lived assets Professional Fees Professional services Communications and Information Technology Technology and communication Other Selling, General and Administrative Expense Selling, general and administrative Business Combination, Acquisition Related Costs Acquisition-related expenses Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Costs and Expenses, Related Party Related party expenses (affiliate in Predecessor periods) Operating Expenses Total operating expenses Other Cost and Expense, Operating Other operating expenses Interest Income (Expense), Net Interest income (expense), net Fair Value Adjustment of Warrants Loss from change in fair value of warrant liability Loss from change in fair value of warrant liability Other Nonoperating Income (Expense) Other income (expense), net Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Loss before income taxes Total loss before provision for income taxes Income Tax Expense (Benefit) Income tax (expense) benefit Total income tax expense (benefit) Provision for (benefit from) income taxes Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Net loss Net Income (Loss) Attributable to Noncontrolling Interest Less: Net loss attributable to noncontrolling interest Net Income (Loss) Attributable to Parent Net loss attributable to Bakkt Holdings, Inc. Allocation of net loss, as adjusted Earnings Per Share [Abstract] Net loss per share attributable to Bakkt Holdings, Inc. Class A common stockholders per share: Denominator: Earnings Per Share, Basic Basic (in dollars per share) Net loss per share – basic (in dollars per share) Earnings Per Share, Diluted Diluted (in dollars per share) Net loss per share – diluted (in dollars per share) Operating Income (Loss) Operating loss General and administrative expenses Weighted Average Number of Shares Outstanding, Basic and Diluted Weighted average shares outstanding Basic and diluted weighted average shares outstanding Earnings Per Share, Basic and Diluted Basic and diluted net loss per share Basic and diluted net loss per ordinary share Other Nonoperating Income (Expense) [Abstract] Other income (expense): Investment Income, Interest Interest earned on investments held in Trust Account Interest earned on investments held in Trust Account Transaction Costs Allocable To Warrant Liabilities Transaction Costs allocable to warrant liabilities Transaction costs allocable to warrant liabilities. Other Nonoperating Income Other Income Revenue from Related Parties Related party net revenues Statement of Comprehensive Income [Abstract] Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss attributable to Bakkt Holdings, Inc. Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Currency translation adjustment, net of tax Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive loss attributable to noncontrolling interest Statement of Stockholders' Equity [Abstract] Incentive Units [Member] Incentive Units Incentive Units Class A Ordinary Shares [Member] Class A Ordinary Shares Class A Ordinary Shares. Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock [Member] Common Stock AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income Additional Paid-in Capital [Member] Additional Paid-in Capital Parent [Member] Total Stockholders' Equity Noncontrolling Interest [Member] Noncontrolling Interest Member Units [Member] Member Units Warrant [Member] Private and public warrants Retained Earnings [Member] Accumulated Deficit Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Warrant Class B [Member] Class B Warrant Warrant Class B Warrant Class C [Member] Class C Warrant Warrant Class C Stock Conversion Description [Axis] Stock Conversion Description [Axis] Conversion of Stock, Name [Domain] Conversion of Stock, Name [Domain] Conversion Of Class A Ordinary Shares And Class B Ordinary Shares Into Class A Common Stock [Member] Conversion Of Class A Ordinary Shares And Class B Ordinary Shares Into Class A Common Stock Conversion Of Class A Ordinary Shares And Class B Ordinary Shares Into Class A Common Stock Issuance Of Class V Common Stock For Opco Incentive Units [Member] Issuance Of Class V Common Stock For Opco Incentive Units Issuance Of Class V Common Stock For Opco Incentive Units Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Shares, Outstanding Beginning balance (in shares) Ending balance (in shares) Members' Equity Beginning balance Ending balance Stock Issued During Period, Shares, New Issues Issuance of Class A voting units and Issuance of common stock to PIPE investors, net of issuance costs (in shares) Number of units issued Issuance of voting units (in shares) Stock Issued During Period, Value, New Issues Issuance of Class A voting units and Issuance of common stock to PIPE investors, net of issuance costs Number of units issued Issuance of voting units Stock Issued During Period, Value, Warrants Exercised Exercise of warrants (Note 9) Stock Issued During Period, Value, Warrants Exercised Stcokholders Equity, Warrants Vested Vesting of Class C warrant (Note 10) Stcokholders Equity, Warrants Vested Stock Issued During Period, Value, Acquisitions Pushdown accounting resulting from Bridge2 Solutions acquisition (Note 4) Stockholders Equity, Warrants Issued Issuance of Class B warrant (Note 10) Stockholders Equity, Warrants Issued Stock Issued During The Period, Shares, Warrants Exercised Exercise of warrants (Notes 9) (in shares) Exercise of warrants (in shares) Stock Issued During The Period, Shares, Warrants Exercised Stock Issued During Period, Shares, Conversion of Convertible Securities Conversion of stock (in shares) Stock issued in exchange for exercise of warrants (in shares) Stock Issued During Period, Value, Conversion of Convertible Securities Conversion of stock APIC, Share-based Payment Arrangement, Increase for Cost Recognition Share-based compensation (Note 11) Noncontrolling Interest, Increase From Share Based Compensation Arrangement Unit-based compensation (Note 11) Noncontrolling Interest, Increase From Share Based Compensation Arrangement Shares Issued, Shares, Share-based Payment Arrangement, Forfeited Forfeiture and cancellation of common units (Note 11) (in shares) Share based compensation other than employee stock scheme shares forfeited during the period Shares Issued, Value, Share-based Payment Arrangement, Forfeited Forfeiture and cancellation of common units (Note 11) Stock Issued During Period, Value, Issued for Services Issuance of Class B ordinary shares to Sponsor Stock shares issued during the period value for services rendered Stock Issued During Period, Shares, Issued for Services Issuance of Class B ordinary shares to Sponsor (in shares) Stock shares issued during the period shares for services rendered Accretion For Class A Ordinary Shares To Redemption Amount Accretion for Class A ordinary shares to redemption amount Accretion for class a ordinary shares to redemption amount. Increase (Decrease) in Temporary Equity [Roll Forward] Increase (Decrease) in Temporary Equity [Roll Forward] Temporary Equity, Shares, Conversion of Convertible Securities Conversion of Class A ordinary shares and Class B ordinary shares into Class A common stock (Note 4) (in shares) Conversion of Class A ordinary shares and Class B ordinary shares into Class A common stock (Note 4) (in shares) Temporary Equity, Shares, Conversion of Convertible Securities Temporary Equity, Stock Repurchased During The Period, Value Redemption of Class A ordinary shares (Note 4) Temporary Equity, Stock Repurchased During The Period, Value Temporary Equity, Stock Repurchased During The Period, Shares Redemption of Class A ordinary shares (Note 4) (in shares) Class A ordinary shares redeemed (in shares) Temporary Equity, Stock Repurchased During The Period, Shares Temporary Equity, Value, Conversion of Convertible Securities Conversion of Class A ordinary shares and Class B ordinary shares into Class A common stock (Note 4) Temporary Equity, Value, Conversion of Convertible Securities Statement of Cash Flows [Abstract] Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Share-Based Payment Arrangement Expense And Deferred Compensation Arrangement with Individual, Compensation Expense Unit-based compensation expense (Note 11) Total Share-Based Payment Arrangement Expense And Deferred Compensation Arrangement with Individual, Compensation Expense Deferred Income Taxes and Tax Credits Deferred income taxes Affiliate Capital Contribution Recognition of affiliate capital contribution (Note 8) Affiliate Capital Contribution Gain (Loss) On Extinguishment Of Software License Liability Gain on extinguishment of software license liability Gain (Loss) On Extinguishment Of Software License Liability Customer Consideration Asset From Issuance of Warrant, Amortization Amortization of customer consideration asset (Note 10) Customer Consideration Asset From Issuance of Warrant, Amortization Depreciation, Depletion and Amortization Depreciation and amortization expense Operating Lease, Right-of-Use Asset, Amortization Expense Non-cash lease expense Share-based Payment Arrangement, Noncash Expense Share-based compensation expense (Note 11) Business Combination, Acquisition Related Costs Paid By Affiliate Acquisition-related expenses Business Combination, Acquisition Related Costs Paid By Affiliate Unrealized Gain (Loss) on Investments Unrealized gain on investment in shares of affiliate stock (Note 8) Unrealized gain on investment Gain (Loss) on Disposition of Stock in Subsidiary or Equity Method Investee Loss on sale of shares of affiliate stock Modification And Vesting of Warrants Modification and vesting of Class C warrant (Note 10) Modification And Vesting of Warrants Cancellation of Common Units Cancellation of common units Cancellation of Common Units Other Noncash Income (Expense) Other Formation Costs Formation cost paid by Sponsor in exchange for issuance of founder shares Formation costs. Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Prepaid Expense Prepaid insurance