| Document and Entity Information | Oct. 21, 2021 |
| Document And Entity Information [Line Items] | |
| Document Type | 8-K/A |
| Document Period End Date | Oct. 21, 2021 |
| Entity Registrant Name | Bakkt Holdings, Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39544 |
| Entity Tax Identification Number | 98-1550750 |
| Entity Address, Address Line One | 10000 Avalon Boulevard |
| Entity Address, Address Line Two | Suite 1000 |
| Entity Address, City or Town | Alpharetta |
| Entity Address, State or Province | GA |
| Entity Address, Postal Zip Code | 30009 |
| City Area Code | 678 |
| Local Phone Number | 534-5849 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Amendment Description | This Amendment No. 1 on Form 8-K/A (“Amendment No. 1”) amends the Current Report on Form 8-K of Bakkt Holdings, Inc., a Delaware corporation (the “Company”), filed on October 21, 2021 (the “Original Report”), in which the Company reported, among other events, the completion of the Business Combination (as defined in the Original Report).This Amendment No. 1 is being filed in order to include (1) the unaudited consolidated financial statements of Bakkt Opco Holdings, LLC (“Opco”), as of September 30, 2021 and for the three and nine months ended September 30, 2021 and 2020, (2) Management’s Discussion and Analysis of Financial Condition and Results of Operations of Opco for the three and nine months ended September 30, 2021 and 2020 and (3) the unaudited pro forma condensed combined financial information of the Company as of and for the nine months ended September 30, 2021 and for the year ended December 31, 2020.This Amendment No. 1 does not amend any other item of the Original Report or purport to provide an update or a discussion of any developments at the Company or its subsidiaries, including Opco, subsequent to the filing date of the Original Report. The information previously reported in or filed with the Original Report is hereby incorporated by reference to this Form 8-K/A. |
| Amendment Flag | true |
| Entity Central Index Key | 0001820302 |
| Warrant [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Warrants to purchase Class A Common Stock |
| Trading Symbol | BKKT WS |
| Security Exchange Name | NYSE |
| Class 160 A Common Stock Par Value 0.0001 Per Share [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class A Common Stock, par value $0.0001 per share |
| Trading Symbol | BKKT |
| Security Exchange Name | NYSE |
