Regulation and Rates - Provision for Rate Refund (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021	Jul. 31, 2019
Regulation and Rates [Line Items]
Provision for rate refund	$ 5,978	$ 5,682
Cleco Katrina/Rita storm recovery charges
Regulation and Rates [Line Items]
Provision for rate refund	1,614	1,611
FRP
Regulation and Rates [Line Items]
Provision for rate refund	1,230	1,229
Site-specific industrial customer
Regulation and Rates [Line Items]
Provision for rate refund	1,125	833
TCJA
Regulation and Rates [Line Items]
Provision for rate refund	2,057	2,057
CLECO POWER
Regulation and Rates [Line Items]
Provision for rate refund	5,978	5,682	$ 79,200
CLECO POWER | Cleco Katrina/Rita storm recovery charges
Regulation and Rates [Line Items]
Provision for rate refund	1,614	1,611
CLECO POWER | FRP
Regulation and Rates [Line Items]
Provision for rate refund	1,230	1,229
CLECO POWER | Site-specific industrial customer
Regulation and Rates [Line Items]
Provision for rate refund	1,125	833
CLECO POWER | TCJA
Regulation and Rates [Line Items]
Provision for rate refund	$ 2,057	$ 2,057