Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Valuation Allowance [Line Items]
Interest payable related to uncertain tax positions	$ 0	$ 0
Interest expense related to uncertain tax positions	0	0	$ 0
Liability for uncertain tax positions	0	0
Penalties recognized	0	0	0
Federal
Valuation Allowance [Line Items]
Operating loss carryforwards	207,800,000	243,500,000
State
Valuation Allowance [Line Items]
Operating loss carryforwards	88,800,000	167,200,000
Cleco Power
Valuation Allowance [Line Items]
Decrease in accumulated deferred federal and state income taxes, net	66,500,000
Increase to regulatory liabilities	64,900,000
Impact to income tax expense	1,600,000
Interest payable related to uncertain tax positions	0	0
Interest expense related to uncertain tax positions	0	0	$ 0
Liability for uncertain tax positions	0	0
Cleco Power | Federal
Valuation Allowance [Line Items]
Operating loss carryforwards	99,800,000	135,400,000
Cleco Power | State
Valuation Allowance [Line Items]
Operating loss carryforwards	88,800,000	167,200,000
NMTC
Valuation Allowance [Line Items]
NMTC carryforwards	68,700,000	$ 79,000,000
Valuation allowance	0
NMTC | Cleco Power
Valuation Allowance [Line Items]
Valuation allowance	$ 0