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Regulation and Rates (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 16, 2021
Mar. 31, 2023
Dec. 31, 2021
Dec. 31, 2022
Jul. 01, 2021
Regulation and Rates [Line Items]          
Current regulatory liabilities   $ 42,143   $ 42,890  
CLECO POWER          
Regulation and Rates [Line Items]          
Regulatory liabilities   162,083   161,652  
Current regulatory liabilities   42,143   $ 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   247,000      
Current regulatory liabilities   $ 42,100      
CLECO POWER | LPSC | FRP          
Regulation and Rates [Line Items]          
Target ROE allowed by FRP   9.50% 9.50%    
Percentage of retail earnings within range to be returned to customers   60.00% 60.00%    
ROE for customer credit, low range   10.00% 10.00%    
ROE for customer credit, high range   10.50% 10.50%    
CLECO POWER | LPSC | FRP | Maximum          
Regulation and Rates [Line Items]          
Target ROE allowed by FRP   10.00% 10.00%