Class of Warrant or Right, Exercised

No definition available.

Name:	bakkt_ClassOfWarrantOrRightExercised
Namespace Prefix:	bakkt_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Class Of Warrant Or Right, Term

+ References

No definition available.

+ Details

Name:	bakkt_ClassOfWarrantOrRightTerm
Namespace Prefix:	bakkt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Class Of Warrant Or Right, Threshold Period After Closing For Exercise Of Warrants

+ References

No definition available.

+ Details

Name:	bakkt_ClassOfWarrantOrRightThresholdPeriodAfterClosingForExerciseOfWarrants
Namespace Prefix:	bakkt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Stock Issued During Period, Shares, Warrants Exercised

+ References

No definition available.

+ Details

Name:	bakkt_StockIssuedDuringPeriodSharesWarrantsExercised
Namespace Prefix:	bakkt_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Warrant Liability

+ References

No definition available.

+ Details

Name:	bakkt_WarrantLiability
Namespace Prefix:	bakkt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of expense (income) related to adjustment to fair value of warrant liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

+ Details

Name:	us-gaap_FairValueAdjustmentOfWarrants
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=bakkt_RegisteredDirectOfferingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=bakkt_UnderwritingAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=bakkt_PublicWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=bakkt_PreFundedWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=bakkt_ThirdPartyOfferingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=bakkt_Class1AndClass2WarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=bakkt_Class1WarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=bakkt_Class2WarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Warrants (Details) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended		6 Months Ended
	Mar. 02, 2026	Jul. 28, 2025	Feb. 29, 2024	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025	Jun. 17, 2025	Apr. 30, 2024	Apr. 25, 2024	Mar. 04, 2024
Class of Warrant or Right [Line Items]
Common stock, par value (in dollars per share)				$ 0.0001		$ 0.0001
Loss (gain) from change in fair value of warrant liability				$ (4,700)	$ (32,247)
Warrants term				5 years 6 months
Warrant liability				$ 12,032		$ 16,732
Registered Direct Offering
Class of Warrant or Right [Line Items]
Sale of stock (in dollars per share)	$ 8.75
Class A Common Stock
Class of Warrant or Right [Line Items]
Common stock, par value (in dollars per share)				$ 0.0001			$ 0.0001
Number of shares entitled to holders of each warrant (in shares)				0.04
Class A Common Stock \| Registered Direct Offering
Class of Warrant or Right [Line Items]
Sale of stock, number of units/warrants issued (in shares)	3,024,799
Class A Common Stock \| Underwriting Agreement
Class of Warrant or Right [Line Items]
Sale of stock, number of units/warrants issued (in shares)		6,753,627
Common stock, par value (in dollars per share)		$ 0.0001
Sale of stock (in dollars per share)		$ 10.00
Public warrants
Class of Warrant or Right [Line Items]
Warrants outstanding (in shares)				7,140,383		7,140,383
Loss (gain) from change in fair value of warrant liability				$ (100)	(2,600)
Public warrants \| Class A Common Stock
Class of Warrant or Right [Line Items]
Exercise price (in dollars per share)				$ 287.50
Pre-funded warrants
Class of Warrant or Right [Line Items]
Exercise price (in dollars per share)	$ 0.0001
Pre-funded warrants \| Registered Direct Offering
Class of Warrant or Right [Line Items]
Sale of stock, number of units/warrants issued (in shares)	2,475,201
Sale of stock (in dollars per share)	$ 8.7499
Pre-funded warrants \| Underwriting Agreement
Class of Warrant or Right [Line Items]
Sale of stock, number of units/warrants issued (in shares)		746,373
Exercise price (in dollars per share)		$ 0.0001
Sale of stock (in dollars per share)		$ 9.9999
Pre-funded warrants \| Class A Common Stock \| Third-Party Offering
Class of Warrant or Right [Line Items]
Warrants issued, number of units called by warrants (in shares)								448,742
Pre-funded warrants \| Class A Common Stock \| Underwriting Agreement
Class of Warrant or Right [Line Items]
Sale of stock, number of units/warrants issued (in shares)		746,373
Exercise price (in dollars per share)		$ 0.0001
Sale of stock (in dollars per share)		$ 9.9999
Warrants exercised (in shares)						746,373
Stock issued for exercise of warrants (in shares)						743,362
Class 1 and Class 2 Warrants
Class of Warrant or Right [Line Items]
Loss (gain) from change in fair value of warrant liability				$ (4,600)	$ (29,700)
Warrants issued, number of units called by warrants (in shares)				2,017,850
Warrant liability									$ 2,600	$ 27,700
Class 1 Warrants
Class of Warrant or Right [Line Items]
Exercise price (in dollars per share)			$ 25.50
Threshold period for exercise of warrants			6 months
Class 1 Warrants \| Class A Common Stock \| Third-Party Offering
Class of Warrant or Right [Line Items]
Warrants issued, number of units called by warrants (in shares)								1,153,402
Class 2 Warrants
Class of Warrant or Right [Line Items]
Exercise price (in dollars per share)			$ 25.50
Threshold period for exercise of warrants			6 months
Class 2 Warrants \| Class A Common Stock
Class of Warrant or Right [Line Items]
Number of shares entitled to holders of each warrant (in shares)				0.5
Class 2 Warrants \| Class A Common Stock \| Third-Party Offering
Class of Warrant or Right [Line Items]
Warrants issued, number of units called by warrants (in shares)								1,153,402