Pension Plan and Employee Benefits - Current and Non-Current Portions of the Other Benefits Liability (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Non-current	$ 290,818	$ 291,606
CLECO POWER
Defined Benefit Plan Disclosure [Line Items]
Non-current	206,669	205,214
Other Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Current	5,181	5,181
Non-current	48,829	50,093
Other Benefits Plan | CLECO POWER
Defined Benefit Plan Disclosure [Line Items]
Current	4,432	4,432
Non-current	$ 38,344	$ 39,315