Fair Value Accounting and Financial Instruments - Volume of Commodity-Related Derivative Contracts (Details) MWh in Thousands, MMBTU in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2022 MWh	Mar. 31, 2022 MMBTU	Dec. 31, 2021 MWh	Dec. 31, 2021 MMBTU
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Volume outstanding	5,739	249,118	14,055	109,306
CLECO POWER
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Volume outstanding	3,646		8,899

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.

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