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Storm Restoration Storm Restoration (Details) (Cleco Power [Member], Hurricane Isaac [Member], USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Sep. 02, 2012
Aug. 28, 2012
customer
Cleco Power [Member] | Hurricane Isaac [Member]
     
Storm Resotration [Line Items]      
Approximate Number of Customers Affected     95,000
Percent of Customers Affected     34.00%
Percent of Customers Restored   100.00%  
Cost of Storm Restoration $ 24.0    
Percent of Storm Restoration Costs Capitalized 56.00%    
Capitalized Storm Restoration Costs $ 13.6