Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

+ Details

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- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5579245-113959

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- Definition

Fair value as of the balance sheet date of all price risk derivative assets not designated as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959

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Balance Type:	debit
Period Type:	instant

- Definition

Fair value as of the balance sheet date of all price risk derivative liabilities not designated as hedging instruments.

+ References

+ Details

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Summary of Significant Accounting Policies, Risk Management (Details) $ in Millions	Sep. 30, 2017 USD ($) contract MMBTU	Dec. 31, 2016 USD ($) MMBTU	Sep. 30, 2016 contract	Apr. 12, 2016 contract
Successor \| Interest Rate Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of instruments held to mitigate risk	0		0
Predecessor \| Interest Rate Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of instruments held to mitigate risk				0
Cleco Power [Member] \| Other Current Assets [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
FTRs in Energy risk management asset \| $	$ 13.4	$ 7.9
Cleco Power [Member] \| Other Current Liabilities [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
FTRs in Energy risk management liability \| $	$ 0.5	$ 0.2
Cleco Power [Member] \| Open Natural Gas Positions
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of instruments held to mitigate risk \| MMBTU	0	0
Cleco Power [Member] \| Interest Rate Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of instruments held to mitigate risk	0		0