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Reverse Recapitalization - Schedule of Old Shares Exchanged of Common Stock (Details) - shares |  | 12 Months Ended |
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Dec. 14, 2023 | Sep. 30, 2024 | Sep. 30, 2022
Old Nukk [Member] |  |  |
Reverse Recapitalization - Schedule of Old Shares Exchanged of Common Stock (Details) [Line Items] |  |  |
Common Stock, Shares, Outstanding |  |  | 367,175,886
Stock Issued During Period, Shares, Issued for Services | 1,641,176 |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares |  | 382,675,886 |
Brilliant [Member] |  |  |
Reverse Recapitalization - Schedule of Old Shares Exchanged of Common Stock (Details) [Line Items] |  |  |
Stock Issued During Period, Shares, Issued for Services | 13,858,824 |  |
Nukkleus Inc [Member] |  |  |
Reverse Recapitalization - Schedule of Old Shares Exchanged of Common Stock (Details) [Line Items] |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares |  | 1,312,494 |
Common Stock [Member] | Old Nukk [Member] |  |  |
Reverse Recapitalization - Schedule of Old Shares Exchanged of Common Stock (Details) [Line Items] |  |  |
Common Stock, Shares, Outstanding |  |  | 1,259,333
Stock Issued During Period, Shares, Issued for Services | 5,628 |  |
Common Stock [Member] | Brilliant [Member] |  |  |
Reverse Recapitalization - Schedule of Old Shares Exchanged of Common Stock (Details) [Line Items] |  |  |
Stock Issued During Period, Shares, Issued for Services | 47,533 |  |

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