Regulation and Rates - Provision for Rate Refund (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Jul. 31, 2019
Public Utilities, General Disclosures [Line Items]
Provision for rate refund	$ 3,074	$ 5,682
Cleco Power
Public Utilities, General Disclosures [Line Items]
Provision for rate refund	3,074	5,682	$ 79,200
Cleco Katrina/Rita storm recovery charges
Public Utilities, General Disclosures [Line Items]
Provision for rate refund	0	1,611
Cleco Katrina/Rita storm recovery charges | Cleco Power
Public Utilities, General Disclosures [Line Items]
Provision for rate refund	0	1,611
FRP
Public Utilities, General Disclosures [Line Items]
Provision for rate refund	0	1,229
FRP | Cleco Power
Public Utilities, General Disclosures [Line Items]
Provision for rate refund	0	1,229
Site-specific industrial customer
Public Utilities, General Disclosures [Line Items]
Provision for rate refund	903	833
Site-specific industrial customer | Cleco Power
Public Utilities, General Disclosures [Line Items]
Provision for rate refund	903	833
TCJA
Public Utilities, General Disclosures [Line Items]
Provision for rate refund	2,057	2,057
TCJA | Cleco Power
Public Utilities, General Disclosures [Line Items]
Provision for rate refund	$ 2,057	$ 2,057