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

No definition available.

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- Definition

One-time contribution paid to the LED

+ 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

Public Utilities, Proposed Return on Equity, Percentage

+ 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 exceeds a certain range.

+ 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

Rate Credits issued to customers

+ References

No definition available.

+ Details

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Balance Type:	debit
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- Definition

For transactions that are recognized separately from the acquisition of assets and assumptions of liabilities in the business combination, such as related to pre-existing relationships with the acquiree, this element represents the disclosure of the amount of acquisition related costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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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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- Definition

Amount of cash outflow to customers for refund payments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 13.A.4(a))
-URI http://asc.fasb.org/extlink&oid=65893310&loc=d3e214044-122780

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- Definition

Percentage of public utility's approved return on equity.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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) - USD ($)		1 Months Ended				15 Months Ended	39 Months Ended
Regulation and Rates (Details) - USD ($)	Feb. 13, 2017	Sep. 30, 2017	Sep. 30, 2016	Jun. 30, 2016	Nov. 30, 2013	Sep. 30, 2017	Sep. 30, 2017	Oct. 31, 2017	Jun. 28, 2017	Dec. 31, 2016	Oct. 31, 2016	Apr. 07, 2016
Regulation and Rates [Line Items]
Refund due to customers		$ 3,734,000				$ 3,734,000	$ 3,734,000			$ 3,974,000
LPSC \| Merger Commitments, rate credits
Regulation and Rates [Line Items]
Merger commitments												$ 136,000,000
LPSC \| Merger Commitments, economic development contribution
Regulation and Rates [Line Items]
Merger commitments												7,000,000
LPSC \| Merger Commitments, economic development contribution, disbursed over 5 years
Regulation and Rates [Line Items]
Merger commitments												2,500,000
LPSC \| Merger Commitments, charitable contribution, disbursed over 5 years
Regulation and Rates [Line Items]
Merger commitments												6,000,000
LPSC \| Merger Commitments, cost savings
Regulation and Rates [Line Items]
Merger commitments												1,200,000
Cleco Power [Member]
Regulation and Rates [Line Items]
Refund due to customers		3,734,000				3,734,000	3,734,000			3,974,000
Payments received for capital expenditures subject to refund		2,200,000				2,200,000	2,200,000
Cleco Power [Member] \| LPSC \| Merger Commitments, rate credits
Regulation and Rates [Line Items]
Merger commitments												136,000,000
Merger Commitment, Rate Credits issued to customers						130,000,000
Cleco Power [Member] \| LPSC \| Merger Commitments, economic development contribution
Regulation and Rates [Line Items]
Merger commitments												7,000,000
Merger Commitment, One-time contribution paid to the LED										$ 7,000,000
Cleco Power [Member] \| LPSC \| Merger Commitments, economic development contribution, disbursed over 5 years
Regulation and Rates [Line Items]
Merger commitments												2,500,000
Cleco Power [Member] \| LPSC \| Merger Commitments, charitable contribution, disbursed over 5 years
Regulation and Rates [Line Items]
Merger commitments												6,000,000
Cleco Power [Member] \| LPSC \| Merger Commitments, cost savings
Regulation and Rates [Line Items]
Customer Refundable Fees, Refund Payments		300,000
Refund due to customers		1,500,000				1,500,000	1,500,000
Merger commitments												$ 1,200,000
Cleco Power [Member] \| MISO Transmission Rates \| FERC
Regulation and Rates [Line Items]
Target ROE allowed by FRP (in hundredths)			10.32%		12.38%
Public Utilities, Proposed Return on Equity, Percentage (in hundredths)				9.70%	6.68%
Customer Refundable Fees, Refund Payments	$ 1,200,000
Refund due to customers		2,000,000				2,000,000	$ 2,000,000
Cleco Power [Member] \| FRP \| LPSC
Regulation and Rates [Line Items]
Percentage of retail earnings exceeding range to be returned to customers (in hundredths)							100.00%
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 [Member] \| FRP \| LPSC \| Maximum
Regulation and Rates [Line Items]
Target ROE allowed by FRP (in hundredths)							10.90%
Cleco Power [Member] \| FRP Monitoring report for the 12-month period ended June 30, 2016 \| LPSC
Regulation and Rates [Line Items]
Refund due to customers									$ 0		$ 0
Cleco Power [Member] \| Merger Commitment Monitoring report for the 12-month period ended June 30, 2016 \| LPSC
Regulation and Rates [Line Items]
Refund due to customers											$ 300,000
Cleco Power [Member] \| SSR [Member] \| FERC
Regulation and Rates [Line Items]
Amount collected in SSR payments from MISO		$ 20,300,000				$ 20,300,000	$ 20,300,000
Subsequent Event [Member] \| Cleco Power [Member] \| 2017 FRP Monitoring report [Member] \| LPSC
Regulation and Rates [Line Items]
Refund due to customers								$ 0
Subsequent Event [Member] \| Cleco Power [Member] \| 2017 Merger Commitment Monitoring report [Member] \| LPSC
Regulation and Rates [Line Items]
Refund due to customers								$ 1,200,000