Variable Interest Entities - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Equity investment in investee	$ 1,992	$ 2,072	$ 2,072
CLECO POWER
Variable Interest Entity [Line Items]
Equity investment in investee	$ 1,992	$ 2,072
Variable Interest Entity, Not Primary Beneficiary | CLECO POWER
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage	50.00%
Variable Interest Entity, Not Primary Beneficiary | SWEPCO
Variable Interest Entity [Line Items]
Ownership percentage by other parties	50.00%