Variable Interest Entities - Schedule of Equity Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]
Total equity investment in investee	$ 1,916	$ 1,916	$ 1,916	$ 1,916	$ 1,916
Operating revenue	321,761	252,185	617,005	529,027
Operating expenses	(232,104)	(189,916)	(448,372)	(481,135)
Interest income	(4,032)	(2,653)	(11,165)	(4,061)
Net income (loss)	57,911	12,624	107,280	(38,898)
CLECO POWER
Schedule of Equity Method Investments [Line Items]
Purchase price	12,873		12,873		12,873
Cash contributions	6,399		6,399		6,399
Distributions	(18,033)		(18,033)		(18,033)
Equity income from investee	677		677		677
Total equity investment in investee	1,916		1,916		$ 1,916
Operating revenue	320,464	252,712	614,293	540,745
Operating expenses	(229,480)	(189,736)	(441,496)	(463,763)
Interest income	(1,435)	(904)	(6,026)	(2,192)
Net income (loss)	67,714	28,858	128,614	21,250
CLECO POWER | Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Equity Method Investments [Line Items]
Operating revenue	70	67	173	251
Operating expenses	(70)	(67)	(173)	(154)
Gain on sale of property	0	0	0	1,356
Interest income	0	0	0	(97)
Net income (loss)	$ 0	$ 0	$ 0	$ 1,356