Summary of Significant Accounting Policies, Deferred Project Costs (Details) (Cleco Power [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Cleco Power [Member]
Deferred Project Costs [Line Items]
Resource planning projects	$ 0.7	$ 0.4

The total amount of allowable costs capitalized during the period by the entity pertaining to Phase-In plans which were deferred on the expectation of future recovery.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 980

-SubTopic 340

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44264-110382

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 980

-SubTopic 340

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6499958&loc=d3e44213-110381

Name:	us-gaap_PhaseInPlanAmountOfCostsDeferredForRateMakingPurposes
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant