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Storm Restoration (Details) (Cleco Power [Member], Hurricane Isaac [Member], USD $)
In Millions, unless otherwise specified
Jun. 30, 2013
Sep. 02, 2012
Aug. 28, 2012
customer
Cleco Power [Member] | Hurricane Isaac [Member]
     
Storm Resotration [Line Items]      
Approximate number of customers affected (in thousands)     95,000
Percent of customers affected (in hundredths)     34.00%
Percent of customers restored (in hundredths)   100.00%  
Cost of storm restoration $ 24.3    
Percent of storm restoration costs capitalized (in hundredths) 56.00%    
Capitalized storm restoration costs $ 13.6