Debt, Credit Facilities (Details) (Line of Credit [Member], USD $) In Millions, unless otherwise specified	Sep. 30, 2013
Line of Credit Facility [Line Items]
Line of credit facility, amount outstanding	$ 0
Line of Credit Facility, Current Borrowing Capacity	250.0
Cleco Power [Member]
Line of Credit Facility [Line Items]
Line of credit facility, amount outstanding	0
Line of Credit Facility, Current Borrowing Capacity	$ 300.0