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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Face amount less reductions of off-balance sheet commitments, in the form of guarantees and standby letters of credit.

No definition available.

Name:	cnl_NetAmountOfOffBalanceSheetCommitments
Namespace Prefix:	cnl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The ownership interest in Cajun Gas Energy LLC that was exchanged by Acadia Power Holdings LLC, a wholly owned subsidiary of Midstream, in conjunction with the disposition of Acadia Unit 2 to Entergy Louisiana.

No definition available.

Name:	cnl_OwnershipInterestExchangedToThirdPartiesInConjunctionWithDisposition
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The ownership interest received in Acadia Power Partners, LLC by Acadia Power Holdings LLC, a wholly owned subsidiary of Midstream, in conjunction with the disposition of Acadia Unit 2 to Entergy Louisiana.

No definition available.

Name:	cnl_OwnershipInterestReceivedInConjunctionWithDisposition
Namespace Prefix:	cnl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The percentage of affiliate's indemnification liability accepted by the entity.

No definition available.

Name:	cnl_PercentageOfAffiliatesIndemnificationLiabilityAcceptedByEntity
Namespace Prefix:	cnl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Percentage of average losses on which the amount of a letter of credit is based.

No definition available.

Name:	cnl_PercentageOfAverageLossesOnWhichLetterOfCreditIsBased
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Data Type:	num:percentItemType
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Period Type:	instant

The percentage of ownership by an affiliated entity.

No definition available.

Name:	cnl_PercentageOfOwnershipByAffiliate
Namespace Prefix:	cnl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Period (in years) over which average losses are determined for purposes of calculating the amount of letter of credit.

No definition available.

Name:	cnl_PeriodOverWhichAverageLossesAreDetermined
Namespace Prefix:	cnl_
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_GuaranteeObligationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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

-Publisher FASB

-Name FASB Interpretation (FIN)

-Number 45

-Paragraph 13

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248