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Related Party Transactions, Founder Shares (FY) (Details) |  |  |  | 9 Months Ended | 10 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Sep. 12, 2023 $ / shares | Oct. 06, 2021 USD ($) shares | Mar. 15, 2021 USD ($) shares | Sep. 30, 2023 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) shares | Dec. 31, 2022 USD ($) $ / shares shares
Founder Shares [Abstract] |  |  |  |  |  |
Proceeds from issuance of ordinary share | $ |  |  |  |  | $ 25,000 | $ 0
Stock conversion basis at time of business combination |  |  |  | 1 |  | 1
Class A Common Stock [Member] |  |  |  |  |  |
Founder Shares [Abstract] |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  |  |  | 0 | 0 | 0
Class B Common Stock [Member] |  |  |  |  |  |
Founder Shares [Abstract] |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  |  |  | 5,750,000 | 5,750,000 | 5,750,000
Founder Shares [Member] | Class A Common Stock [Member] | Minimum [Member] |  |  |  |  |  |
Founder Shares [Abstract] |  |  |  |  |  |
Period after initial Business Combination |  |  |  | 150 days |  | 150 days
Founder Shares [Member] | Class B Common Stock [Member] | Over-Allotment Option [Member] |  |  |  |  |  |
Founder Shares [Abstract] |  |  |  |  |  |
Number of shares subject to forfeiture (in shares) |  |  |  |  |  | 0
Founder Shares [Member] | Class B Common Stock [Member] | Over-Allotment Option [Member] | Maximum [Member] |  |  |  |  |  |
Founder Shares [Abstract] |  |  |  |  |  |
Number of shares subject to forfeiture (in shares) |  |  | 750,000 |  |  |
Sponsor [Member] |  |  |  |  |  |
Founder Shares [Abstract] |  |  |  |  |  |
Stock conversion basis at time of business combination | 1 |  |  |  |  |
Holding period for transfer, assignment or sale of Founder Shares |  |  |  | 360 days |  |
Threshold trading days |  |  |  | 20 days |  |
Threshold consecutive trading days |  |  |  | 30 days |  |
Period after initial Business Combination |  |  |  | 150 days |  |
Sponsor [Member] | Minimum [Member] |  |  |  |  |  |
Founder Shares [Abstract] |  |  |  |  |  |
Share price (in dollars per share) | $ / shares | $ 12 |  |  |  |  |
Sponsor [Member] | Founder Shares [Member] | Class A Common Stock [Member] |  |  |  |  |  |
Founder Shares [Abstract] |  |  |  |  |  |
Threshold trading days |  |  |  | 20 days |  | 20 days
Threshold consecutive trading days |  |  |  | 30 days |  | 30 days
Sponsor [Member] | Founder Shares [Member] | Class A Common Stock [Member] | Minimum [Member] |  |  |  |  |  |
Founder Shares [Abstract] |  |  |  |  |  |
Share price (in dollars per share) | $ / shares |  |  |  | $ 12 |  | $ 12
Sponsor [Member] | Founder Shares [Member] | Class B Common Stock [Member] |  |  |  |  |  |
Founder Shares [Abstract] |  |  |  |  |  |
Proceeds from issuance of ordinary share | $ |  |  | $ 25,000 | $ 25,000 |  |
Shares issued (in shares) |  |  | 7,187,500 | 5,750,000 |  |
Ownership interest, as converted percentage |  |  | 20.00% |  |  |
Number of shares surrender for no consideration (in shares) |  | 1,437,500 |  |  |  |
Shares surrendered, consideration | $ |  | $ 0 |  |  |  |
Common stock, shares outstanding (in shares) |  | 5,750,000 |  |  |  |
Stock conversion basis at time of business combination |  |  |  | 1 |  | 1
Holding period for transfer, assignment or sale of Founder Shares |  |  |  | 1 year |  | 1 year

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- Definition Period of time after the completion of initial Business Combination in which initial shareholders are not permitted to transfer, assign or sell any of their held Founder Shares, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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