Fair Value Accounting and Financial Instruments - Commodity Derivative Contracts (Details) MWh in Thousands, MMBTU in Thousands	12 Months Ended
Dec. 31, 2021 MWh	Dec. 31, 2021 MMBTU	Dec. 31, 2020 MWh	Dec. 31, 2020 MMBTU
Fair Value [Line Items]
Volume outstanding (MWh / MMBtu)	14,055	109,306	15,269	73,000
Cleco Power
Fair Value [Line Items]
Volume outstanding (MWh / MMBtu)	8,899		9,521

Nominal energy measure used to calculate payments on a derivative instrument.

No definition available.

Name:	us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:energyItemType
Balance Type:	na
Period Type:	duration