Related Party Transactions, Administrative Support Agreement (FY) (Details) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Related Party Transactions [Abstract]
Administrative support fees	$ 1,687,227	$ 494,328	$ 5,219,930	$ 1,784,832
Due to Sponsor	270,000		240,000	120,000
Administrative Support Agreement [Member] \| Related Party [Member]
Related Party Transactions [Abstract]
Monthly related party fee	10,000		10,000
Administrative support fees	30,000	$ 30,000	120,000	120,000
Due to Sponsor	$ 270,000		$ 240,000	$ 120,000

No definition available.

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- Definition

Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

+ References

No definition available.

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- Definition

Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481372/852-10-55-10

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-Publisher FASB
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- Definition

Amount of transactions with related party during the financial reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-1

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