Pension Plan and Employee Benefits - Current and Non-Current Portions of the Other Benefits Liability (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Non-current	$ 200,699	$ 200,665
CLECO POWER
Defined Benefit Plan Disclosure [Line Items]
Non-current	137,891	137,754
Other Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Current	5,017	5,017
Non-current	38,089	38,366
Other Benefits Plan | CLECO POWER
Defined Benefit Plan Disclosure [Line Items]
Current	4,310	4,310
Non-current	$ 29,846	$ 30,082