Regulation and Rates - Narrative (Details) - USD ($) $ in Thousands					12 Months Ended
	Jul. 01, 2024	Jun. 19, 2024	Apr. 19, 2024	Feb. 02, 2024	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023	Jul. 01, 2021
Public Utilities, General Disclosures [Line Items]
Increase in other regulatory asset					$ 3,800
Regulatory liabilities					8,327		$ 21,939
Cleco Power
Public Utilities, General Disclosures [Line Items]
Increase in other regulatory asset					3,800
Regulatory liability					86,005		133,448,000
Regulatory liabilities					8,327		21,939
LPSC | Excess ADIT
Public Utilities, General Disclosures [Line Items]
Regulatory liability					189,600		211,500
LPSC | Cleco Power
Public Utilities, General Disclosures [Line Items]
Deferred costs					4,000
LPSC | Cleco Power | Excess ADIT
Public Utilities, General Disclosures [Line Items]
Bill credit related to unprotected excess ADIT								$ 2,500
Regulatory liability					189,600		211,500
Regulatory liabilities					$ 6,800
LPSC | Cleco Power | FRP
Public Utilities, General Disclosures [Line Items]
Public utilities, approved return on equity, percentage	9.50%	9.70%
Public utilities, return on equity, percentage of retail earnings due to customers, within range	60.00%	60.00%
Public utilities, return on equity for customer refund, low range	10.00%	10.30%
Return on equity for customer refund, high range	10.50%	10.90%
LPSC | Cleco Power | FRP | Maximum
Public Utilities, General Disclosures [Line Items]
Public utilities, approved return on equity, percentage	10.00%	10.30%
Dolet Hills | LPSC | Cleco Power
Public Utilities, General Disclosures [Line Items]
Loss contingency accrual						$ 1,300	$ 58,700
Annual billing credit settlement			$ 20,000
Billing credit settlement			$ 60,000	$ 60,000