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- Definition

Fair value of the entity's equity.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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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.

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- Definition

Amount of fair value of reporting unit in excess of carrying amount.

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- Definition

Percentage of fair value of reporting unit in excess of carrying amount.

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Intangible Assets and Goodwill - Goodwill (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2018	Aug. 01, 2018	Dec. 31, 2017	Apr. 13, 2016
Goodwill [Line Items]
Goodwill		$ 1,490,797,000		$ 1,490,797,000	$ 1,490,000,000
Impairments recorded for goodwill	$ 0
WACC
Goodwill [Line Items]
Equity, measurement input			5.70%
WACC \| Pro Forma \| Minimum
Goodwill [Line Items]
Fair value of equity			$ 3,630,000,000
Equity, measurement input			5.60%
WACC \| Pro Forma \| Maximum
Goodwill [Line Items]
Fair value of equity			$ 3,470,000,000
Equity, measurement input			5.80%
Long-term Cash Flow Growth Rate
Goodwill [Line Items]
Equity, measurement input			2.50%
Long-term Cash Flow Growth Rate \| Pro Forma \| Minimum
Goodwill [Line Items]
Fair value of equity			$ 3,480,000,000
Equity, measurement input			2.40%
Long-term Cash Flow Growth Rate \| Pro Forma \| Maximum
Goodwill [Line Items]
Fair value of equity			$ 3,620,000,000
Equity, measurement input			2.60%
Cleco Power
Goodwill [Line Items]
Excess of fair value over carrying value, percent			7.50%
Excess of fair value over carrying value			$ 247,400,000
Accumulated impairment charges			0
Cleco Power \| Estimated Fair Value
Goodwill [Line Items]
Fair value of equity			3,550,000,000
Cleco Power \| Carrying value
Goodwill [Line Items]
Fair value of equity			$ 3,300,000,000