| Cover | Apr. 22, 2024 |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Amendment Description | This Current Report on Form 8-K/A is filed as an amendment to the Current report on Form 8-K as originally filed with the U.S. Securities and Exchange Commission on April 23, 2024 (the “Original Form 8-K”), solely for the purpose of correcting a typo in the copy of the press release that was attached as exhibit 99.1 Except as stated herein, this Current Report on Form 8-K/A does not reflect events occurring after the filing of the Original Form 8-K on April 23, 2024 and no attempt has been made to this Current Report on Form 8-K/A to modify or update other disclosures as presented in the Original Form 8-K. Accordingly, this Form 8-K/A should be read in conjunction with the Original Form 8-K and our filings with the SEC subsequent to the filing of the Original Form 8-K. |
| Document Period End Date | Apr. 22, 2024 |
| Entity File Number | 001-41984 |
| Entity Registrant Name | Black Hawk Acquisition Corporation |
| Entity Central Index Key | 0002000775 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | 4125 Blackhawk Plaza Circle |
| Entity Address, Address Line Two | Suite 166 |
| Entity Address, City or Town | Danville |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94506 |
| City Area Code | (952) |
| Local Phone Number | 217-4482 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Units, each consisting of one ordinary share and one right | |
| Title of 12(b) Security | Units, each consisting of one ordinary share and one right |
| Trading Symbol | BKHAU |
| Security Exchange Name | NASDAQ |
| Ordinary shares, par value $0.0001 per share | |
| Title of 12(b) Security | Ordinary shares, par value $0.0001 per share |
| Trading Symbol | BKHA |
| Security Exchange Name | NASDAQ |
| Rights, each right entitling the holder to receive one-fifth of one ordinary share | |
| Title of 12(b) Security | Rights, each right entitling the holder to receive one-fifth of one ordinary share |
| Trading Symbol | BKHAR |
| Security Exchange Name | NASDAQ |
