Fair Value Accounting Instruments - Schedule of Significant Unobservable Inputs Used in Developing Fair Value of Level 3 Positions (Details) - Measured on a Recurring Basis - FTRs $ in Thousands	Jun. 30, 2025 USD ($) $ / MW	Dec. 31, 2024 USD ($) $ / MW
Price Risk Derivatives, at Fair Value, Net [Abstract]
ASSETS	$ 6,067	$ 2,084
LIABILITIES	281	256
CLECO POWER
Price Risk Derivatives, at Fair Value, Net [Abstract]
ASSETS	6,067	2,084
LIABILITIES	281	256
Level 3
Price Risk Derivatives, at Fair Value, Net [Abstract]
ASSETS	6,067	2,084
LIABILITIES	$ 281	$ 256
Level 3 | Low
Price Risk Derivatives, at Fair Value, Net [Abstract]
INPUT/RANGE PRICE (usd per mwh) | $ / MW	(2.62)	(4.39)
Level 3 | High
Price Risk Derivatives, at Fair Value, Net [Abstract]
INPUT/RANGE PRICE (usd per mwh) | $ / MW	9.93	8.49
Level 3 | Weighted Average
Price Risk Derivatives, at Fair Value, Net [Abstract]
INPUT/RANGE PRICE (usd per mwh) | $ / MW	0.40	0.27
Level 3 | CLECO POWER
Price Risk Derivatives, at Fair Value, Net [Abstract]
ASSETS	$ 6,067	$ 2,084
LIABILITIES	$ 281	$ 256
Level 3 | CLECO POWER | Low
Price Risk Derivatives, at Fair Value, Net [Abstract]
INPUT/RANGE PRICE (usd per mwh) | $ / MW	(2.62)	(4.39)
Level 3 | CLECO POWER | High
Price Risk Derivatives, at Fair Value, Net [Abstract]
INPUT/RANGE PRICE (usd per mwh) | $ / MW	9.93	8.49
Level 3 | CLECO POWER | Weighted Average
Price Risk Derivatives, at Fair Value, Net [Abstract]
INPUT/RANGE PRICE (usd per mwh) | $ / MW	0.40	0.27