Fair Value Accounting Instruments - Significant Unobservable Inputs Used in Developing Fair Value of Level 3 Positions (Details) $ in Thousands	Dec. 31, 2022 USD ($) $ / MW	Dec. 31, 2021 USD ($) $ / MW
MINIMUM
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Forward price range (usd per MWh) | $ / MW	(11.21)	(3.94)
MINIMUM | CLECO POWER
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Forward price range (usd per MWh) | $ / MW	(5.11)	(4.91)
MAXIMUM
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Forward price range (usd per MWh) | $ / MW	13.65	9.25
MAXIMUM | CLECO POWER
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Forward price range (usd per MWh) | $ / MW	13.65	9.25
Measured On A Recurring Basis | SIGNIFICANT UNOBSERVABLE INPUTS (LEVEL 3)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets | $	$ 3,088	$ 6,977
Liabilities | $	1,862	834
Measured On A Recurring Basis | SIGNIFICANT UNOBSERVABLE INPUTS (LEVEL 3) | CLECO POWER
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets | $	2,570	5,515
Liabilities | $	$ 294	$ 597