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Regulation and Rates (Details) - USD ($)
$ in Thousands
Jul. 01, 2021
Sep. 30, 2023
Dec. 31, 2022
Regulation and Rates [Line Items]      
Current regulatory liabilities   $ 31,215 $ 42,890
CLECO POWER      
Regulation and Rates [Line Items]      
Regulatory liabilities   138,004 161,652
Current regulatory liabilities   31,215 $ 42,890
CLECO POWER | LPSC | Excess ADIT      
Regulation and Rates [Line Items]      
Bill credit related to unprotected excess ADIT $ 2,500    
Regulatory liability, amortization period 3 years    
Regulatory liabilities   222,300  
Current regulatory liabilities   $ 31,200  
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%