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Discontinued Operations - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Jun. 01, 2024
Feb. 28, 2019
Dec. 31, 2025
Apr. 26, 2024
Operating revenue, net        
Professional fees     $ 10.8  
LPSC        
Operating revenue, net        
Repayments of long-term debt   $ 400.0    
Long-term debt outstanding       $ 66.7
Discontinued Operations, Held-for-sale | Cleco Cajun        
Operating revenue, net        
Accumulated loss recognized on classification as held for sale $ 216.7      
Sale purchase price due at closing 474.5      
Professional fees 10.8      
Disposal group including discontinued operation consideration payable at after closing date $ 113.0