Amount to be collected annually from a regional transmission organization for system support resource payments.

No definition available.

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- Definition

Effective Income Tax Rate Reconciliation, at Federal and State Statutory Income Tax Rate, Percent

+ References

No definition available.

+ Details

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- Definition

Payments received for capital expenditures subject to refund

+ References

No definition available.

+ Details

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- Definition

The percentage of retail earnings to be returned to retail customers as ordered by the regulatory agency when the return on equity falls within a certain range.

+ References

No definition available.

+ Details

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- Definition

The high range of the return on equity which triggers a retail customer partial refund obligation. All retail earnings must be returned to customers when the return on equity exceeds this high range.

+ References

No definition available.

+ Details

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- Definition

The low range of the return on equity which triggers a retail customer partial refund obligation.

+ References

No definition available.

+ Details

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- Definition

Tax Cuts and Jobs Act of 2017, Customer Refund Liability, Current

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Current regulatory liabilities generally represent obligations to make refunds to customers for various reasons including overpayment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349

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Balance Type:	na
Period Type:	duration

- Definition

Percentage of public utility's approved return on equity.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

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.

+ References

No definition available.

+ Details

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- Details

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Regulation and Rates (Details)		1 Months Ended		6 Months Ended	12 Months Ended	48 Months Ended
Regulation and Rates (Details)	Jan. 01, 2018	Sep. 30, 2016	Nov. 30, 2013	Jun. 30, 2018 USD ($) claim	Dec. 31, 2017 USD ($)	Jun. 30, 2018 USD ($)	Oct. 31, 2017 USD ($)	Feb. 28, 2017 USD ($)
Regulation and Rates [Line Items]
Refund due to customers				$ 25,311,000	$ 4,206,000	$ 25,311,000
Tax Cuts and Jobs Act of 2017, customer refund liability				14,700,000		14,700,000
Federal and state combined statutory tax rate	26.00%				38.00%
CLECO POWER
Regulation and Rates [Line Items]
Refund due to customers				25,311,000	$ 4,206,000	25,311,000
Payments received for capital expenditures subject to refund				$ 4,400,000		4,400,000
CLECO POWER \| MISO Transmission Rates \| FERC
Regulation and Rates [Line Items]
Loss contingency, new claims filed, number \| claim				2
Refund due to customers				$ 2,100,000		$ 2,100,000		$ 1,200,000
Target ROE allowed by FRP (in hundredths)		10.32%	12.38%
CLECO POWER \| FRP \| LPSC
Regulation and Rates [Line Items]
Target ROE allowed by FRP (in hundredths)						10.00%
Percentage of retail earnings within range to be returned to customers (in hundredths)						60.00%
ROE for customer credit, low range (in hundredths)						10.90%
ROE for customer credit, high range (in hundredths)						11.75%
CLECO POWER \| FRP \| LPSC \| Maximum
Regulation and Rates [Line Items]
Target ROE allowed by FRP (in hundredths)						10.90%
CLECO POWER \| 2017 FRP Monitoring Report \| LPSC
Regulation and Rates [Line Items]
Refund due to customers							$ 0
CLECO POWER \| 2017 FRP Monitoring Report, Cost of Service Savings \| LPSC
Regulation and Rates [Line Items]
Refund due to customers				1,200,000		$ 1,200,000	$ 1,200,000
CLECO POWER \| 2018 FRP Monitoring Report, Earnings-Related Refunds \| LPSC
Regulation and Rates [Line Items]
Refund due to customers				5,900,000		5,900,000
CLECO POWER \| 2018 FRP Monitoring Report, Cost of Service Savings \| LPSC
Regulation and Rates [Line Items]
Refund due to customers				1,200,000		1,200,000
CLECO POWER \| SSR \| FERC
Regulation and Rates [Line Items]
Amount collected in SSR payments from MISO				20,300,000		20,300,000
CLECO POWER \| SSR 2 \| FERC
Regulation and Rates [Line Items]
Amount collected in SSR payments from MISO				$ 11,800,000		$ 11,800,000