Fair Value Accounting Instruments - Significant Unobservable Inputs Used in Developing Fair Value of Level 3 Positions (Details) - Measured on a Recurring Basis - FTRs $ in Thousands	Mar. 31, 2023 USD ($) $ / MW	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) $ / MW
Price Risk Derivatives, at Fair Value, Net [Abstract]
Price Risk Derivative Assets, at Fair Value	$ 837	$ 2,570
Price Risk Derivative Liabilities, at Fair Value	204	294
CLECO POWER
Price Risk Derivatives, at Fair Value, Net [Abstract]
Price Risk Derivative Assets, at Fair Value	837	2,570
Price Risk Derivative Liabilities, at Fair Value	204	294
Level 3
Price Risk Derivatives, at Fair Value, Net [Abstract]
Price Risk Derivative Assets, at Fair Value	837	2,570	$ 2,570
Price Risk Derivative Liabilities, at Fair Value	204	294	294
Level 3 | CLECO POWER
Price Risk Derivatives, at Fair Value, Net [Abstract]
Price Risk Derivative Assets, at Fair Value	837	2,570	2,570
Price Risk Derivative Liabilities, at Fair Value	$ 204	$ 294	$ 294
Level 3 | Minimum
Price Risk Derivatives, at Fair Value, Net [Abstract]
FORWARD PRICE RANGE (usd per mwh) | $ / MW	1.84		5.11
Level 3 | Minimum | CLECO POWER
Price Risk Derivatives, at Fair Value, Net [Abstract]
FORWARD PRICE RANGE (usd per mwh) | $ / MW	1.84		5.11
Level 3 | Maximum
Price Risk Derivatives, at Fair Value, Net [Abstract]
FORWARD PRICE RANGE (usd per mwh) | $ / MW	10.03		13.65
Level 3 | Maximum | CLECO POWER
Price Risk Derivatives, at Fair Value, Net [Abstract]
FORWARD PRICE RANGE (usd per mwh) | $ / MW	10.03		13.65