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After the completion period of business combination.

No definition available.

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Formation Costs.

No definition available.

Name:	hlxb_FormationCosts
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represent the number of advisor.

No definition available.

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Represent the number of directors.

No definition available.

Name:	hlxb_NumberofDirectors
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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Represent the number of sponsor holding shares

No definition available.

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

The expected ownership percentage by the founders after completion of the proposed public offering.

No definition available.

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Post-business combination per share.

No definition available.

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Period Type:	duration

The period of time after a business combination which must elapse before consideration of the share price condition for transfer of shares, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The condition for transfer of shares without restriction after a business combination, the number of days in which the share price must exceed the specified amount.

No definition available.

Name:	hlxb_TransferAssignorSellAnySharesorWarrantsAfterCompletionofInitialBusinessCombinationThresholdTradingDays
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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Working capital loan.

No definition available.

Name:	hlxb_WorkingCapitalLoan
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of expense for administrative fee from service provided, including, but not limited to, salary, rent, or overhead cost.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of long-term notes payable classified as other.

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Period Type:	instant

Amount of transactions with related party during the financial reporting period.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 235
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 1
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Name:	us-gaap_RelatedPartyTransactionLineItems
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Data Type:	xbrli:stringItemType
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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

No definition available.

Name:	us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
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Data Type:	xbrli:sharesItemType
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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

No definition available.

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

Number of additional shares authorized for issuance under share-based payment arrangement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
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-Section 50
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Data Type:	xbrli:sharesItemType
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Per share or per unit amount of equity securities issued.

No definition available.

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Data Type:	dtr-types:perShareItemType
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Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

No definition available.

Name:	us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
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Number of shares of stock issued attributable to transactions classified as other.

No definition available.

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

Number of shares (or other type of equity) forfeited during the period.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
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Name:	us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationForfeited
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Name:	us-gaap_RelatedPartyTransactionAxis=hlxb_MrHolmanMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=hlxb_FounderShares1Member
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=hlxb_SponsorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

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

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