Affiliate Transactions (Details) - Cleco Power [Member] - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Related Party Transaction [Line Items]
Accounts receivable - affiliate	$ 1,030	$ 23,621
Accounts payable - affiliate	7,622	7,760
Cleco Corporation [Member]
Related Party Transaction [Line Items]
Accounts receivable - affiliate	250	22,994
Accounts payable - affiliate	453	525
Support Group [Member]
Related Party Transaction [Line Items]
Accounts receivable - affiliate	779	626
Accounts payable - affiliate	7,169	7,235
Others [Member]
Related Party Transaction [Line Items]
Accounts receivable - affiliate	1	1
Accounts payable - affiliate	$ 0	$ 0