Crypto asset, number of units transferred.

No definition available.

Name:	hzen_CryptoAssetNumberOfUnitsTransferred
Namespace Prefix:	hzen_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Crypto Assets Mining Number of Transactions Per Second

+ References

No definition available.

+ Details

Name:	hzen_CryptoAssetsMiningNumberOfTransactionsPerSecond
Namespace Prefix:	hzen_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Horizen fair value per share

+ References

No definition available.

+ Details

Name:	hzen_HorizenFairValuePerShare
Namespace Prefix:	hzen_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of restricted and unrestricted crypto asset units held. Excludes crypto asset units held for platform user.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476168/350-60-50-1

+ Details

Name:	us-gaap_CryptoAssetNumberOfUnits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

+ Details

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

- Definition

Date the event occurred after the balance sheet date but before financial statements are issues or available to be issued, in YYYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_CryptoAssetAxis=hzen_EthereumNetworkMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CryptoAssetAxis=hzen_VisaNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CryptoAssetAxis=hzen_HorizenDAOMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CryptoAssetAxis=hzen_HorizenFoundationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Subsequent Events - Additional Information (Detail) ZenBase in Thousands, Zen in Millions	Jul. 28, 2025 Transactions $ / shares	Jul. 23, 2025 ZenBase	Jul. 18, 2025 Zen	Jul. 18, 2025 ZenBase	Jun. 30, 2025 $ / shares	Sep. 30, 2024 $ / shares
Subsequent Event [Line Items]
Horizen fair value per share \| $ / shares					$ 7.38	$ 8.13
Ethereum Network
Subsequent Event [Line Items]
Number of transactions per second \| Transactions	12
VisaNet
Subsequent Event [Line Items]
Number of transactions per second \| Transactions	65,000
Subsequent Event
Subsequent Event [Line Items]
Subsequent events date	Jul. 28, 2025
Horizen fair value per share \| $ / shares	$ 8.54
Number of units			16.0	17,250
Subsequent Event \| Horizen DAO
Subsequent Event [Line Items]
Number of units transferred \| ZenBase		750
Subsequent Event \| Horizen Foundation
Subsequent Event [Line Items]
Number of units transferred \| ZenBase		500