Variable Interest Entities - Schedule of Equity Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]
Total equity investment in investee	$ 1,916		$ 1,916
Operating revenue	295,244	$ 276,842
Operating expenses	(216,267)	(291,219)
Interest income	(7,133)	(1,408)
Net income (loss)	49,369	(51,522)
CLECO POWER
Schedule of Equity Method Investments [Line Items]
Purchase price	12,873		12,873
Cash contributions	6,399		6,399
Distributions	(18,033)		(18,033)
Equity income from investee	677		677
Total equity investment in investee	1,916		$ 1,916
Operating revenue	293,829	288,034
Operating expenses	(212,018)	(274,029)
Interest income	(4,592)	(1,288)
Net income (loss)	60,900	(7,608)
CLECO POWER | Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Equity Method Investments [Line Items]
Operating revenue	103	184
Operating expenses	(103)	(87)
Gain on sale of property	0	1,356
Interest income	0	(97)
Net income (loss)	$ 0	$ 1,356