Name:	BLUW_AllocableDeferredUnderwritingCommissionPerUnit
Namespace Prefix:	BLUW_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

Amount of deferred underwriting commission payable per unit sold in the IPO upon completion of a business combination.

No definition available.

Name:	BLUW_DeferredUnderwritingCommissionPerUnit
Namespace Prefix:	BLUW_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Percentage of gross proceeds from an initial public offering that is contractually payable to underwriters as a deferred underwriting fee upon the consummation of a business combination or similar transaction.

No definition available.

Name:	BLUW_DeferredUnderwritingDiscountRate
Namespace Prefix:	BLUW_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Amount of deferred underwriting fees payable.

No definition available.

Name:	BLUW_DeferredUnderwritingFeesPayable
Namespace Prefix:	BLUW_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Maximum number of additional units offered to purchase by the underwriters during the option period.

No definition available.

Name:	BLUW_MaximumNumberOfAdditionalUnitsOfferedForPurchase
Namespace Prefix:	BLUW_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Amount of underwriting discount paid in cash to underwriters at the closing of the initial public offering, representing a percentage of gross proceeds from units issued.

No definition available.

Name:	BLUW_UnderwritingDiscountPaidInCash
Namespace Prefix:	BLUW_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Percentage of gross proceeds from the initial public offering paid to underwriters as an upfront cash underwriting discount.

No definition available.

Name:	BLUW_UnderwritingDiscountRateCash
Namespace Prefix:	BLUW_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Period to exercise the over-allotment option, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	BLUW_UnderwritingOptionPeriod
Namespace Prefix:	BLUW_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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.

No definition available.