XML 19 R5.htm IDEA: XBRL DOCUMENT
v3.26.1

STATEMENTS OF OPERATIONS (Parenthetical) | Dec. 31, 2024 shares
--- | ---
Maximum | Class B ordinary shares |
Number of shares subject to forfeiture | 750,000

X
- Definition The total number of shares that are subject to forfeiture to the extent of partial exercise of the over-allotment option of underwriter. + References No definition available. + Details
Name: | BLUW_NumberOfSharesSubjectToForfeiture
Namespace Prefix: | BLUW_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |