Summary of Significant Accounting Policies, Property, Plant, and Equipment, Plant Acquisition Adjustments (Details) (Cleco Power [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Acadia Unit 1 and Facilities Acquisition [Member]
Significant Acquisitions and Disposals [Line Items]
Plant acquisition adjustment	$ 95,578	$ 95,578
Less: accumulated amortization	15,384	12,201
Net plant acquisition adjustment	80,194	83,377
Teche Unit 4 Acquisition [Member]
Significant Acquisitions and Disposals [Line Items]
Plant acquisition adjustment	5,359	5,359
Less: accumulated amortization	4,488	4,234
Net plant acquisition adjustment	$ 871	$ 1,125