Regulation and Rates (Details) - USD ($) $ in Thousands			3 Months Ended
	Apr. 19, 2024	Jul. 01, 2021	Mar. 31, 2024	Dec. 31, 2023
Regulation and Rates [Line Items]
Current regulatory liabilities			$ 12,531	$ 21,939
LPSC | Dolet Hills
Regulation and Rates [Line Items]
Provision for rate refund and electric customer credits			1,300
CLECO POWER
Regulation and Rates [Line Items]
Regulatory liabilities			125,437	133,448
Current regulatory liabilities			12,531	21,939
CLECO POWER | Deferred Operations And Maintenance Costs
Regulation and Rates [Line Items]
Regulatory liabilities			10,400	9,900
CLECO POWER | LPSC | Dolet Hills
Regulation and Rates [Line Items]
Reserve for litigation matters				$ 58,700
Provision for rate refund and electric customer credits			1,300
CLECO POWER | LPSC | Dolet Hills | Subsequent event
Regulation and Rates [Line Items]
Annual billing credit settlement	$ 20,000
Billing credit settlement	$ 60,000
CLECO POWER | LPSC | Excess ADIT
Regulation and Rates [Line Items]
Regulatory liabilities			200,400
Bill credit related to unprotected excess ADIT		$ 2,500
Regulatory liability, amortization period		3 years
Current regulatory liabilities			$ 12,500
CLECO POWER | LPSC | FRP
Regulation and Rates [Line Items]
Target ROE allowed by FRP		9.50%
Percentage of retail earnings within range to be returned to customers		60.00%
ROE for customer credit, low range		10.00%
ROE for customer credit, high range		10.50%
CLECO POWER | LPSC | FRP | Maximum
Regulation and Rates [Line Items]
Target ROE allowed by FRP		10.00%