| Cover | Apr. 23, 2024 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Apr. 23, 2024 |
| Entity Registrant Name | Bakkt Holdings, Inc. |
| Entity Incorporation, State or 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 |
| Entity Central Index Key | 0001820302 |
| Amendment Flag | false |
| Common Class A | |
| 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 |
| Warrant | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants to purchase Class A Common Stock |
| Trading Symbol | BKKT WS |
| Security Exchange Name | NYSE |
