Derivative Instruments - Derivative Instruments as Recorded in Consolidated Balance Sheets (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Price Risk Derivatives, at Fair Value, Net [Abstract]
Commodity-related contracts, net	$ 6,727	$ (2,294)
CLECO POWER
Price Risk Derivatives, at Fair Value, Net [Abstract]
Commodity-related contracts, net	6,727	(2,294)
FTRs | Energy risk management assets, current
Price Risk Derivatives, at Fair Value, Net [Abstract]
Derivative asset	7,330	2,570
FTRs | Energy risk management assets, current | CLECO POWER
Price Risk Derivatives, at Fair Value, Net [Abstract]
Derivative asset	7,330	2,570
FTRs | Energy risk management liabilities, current
Price Risk Derivatives, at Fair Value, Net [Abstract]
Derivative liability	(871)	(294)
FTRs | Energy risk management liabilities, current | CLECO POWER
Price Risk Derivatives, at Fair Value, Net [Abstract]
Derivative liability	(871)	(294)
Natural gas derivatives | Energy risk management assets, current
Price Risk Derivatives, at Fair Value, Net [Abstract]
Derivative asset	342	0
Natural gas derivatives | Energy risk management assets, current | CLECO POWER
Price Risk Derivatives, at Fair Value, Net [Abstract]
Derivative asset	342	0
Natural gas derivatives | Energy risk management assets, noncurrent
Price Risk Derivatives, at Fair Value, Net [Abstract]
Derivative asset	574	0
Natural gas derivatives | Energy risk management assets, noncurrent | CLECO POWER
Price Risk Derivatives, at Fair Value, Net [Abstract]
Derivative asset	574	0
Natural gas derivatives | Energy risk management liabilities, current
Price Risk Derivatives, at Fair Value, Net [Abstract]
Derivative liability	(648)	(4,570)
Natural gas derivatives | Energy risk management liabilities, current | CLECO POWER
Price Risk Derivatives, at Fair Value, Net [Abstract]
Derivative liability	$ (648)	$ (4,570)