Intangible Assets - Narrative (Details) - USD ($)			3 Months Ended
	Mar. 12, 2025	Jun. 22, 2022	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Storm Recover Property
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired		$ 415,900,000
Intangible asset - Storm Recovery Property			$ 381,569,000		$ 384,908,000
Accumulated amortization			34,377,000		31,038,000
Storm Recover Property | CLECO POWER
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets			3,300,000	$ 3,300,000
Intangible asset - Storm Recovery Property			381,569,000		384,908,000
Accumulated amortization			34,377,000		31,038,000
Energy Transition Property
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 301,900,000
Intangible asset - Storm Recovery Property			299,735,000		0
Debt issuance costs			5,300,000
Energy Transition Property | CLECO POWER
Finite-Lived Intangible Assets [Line Items]
Intangible asset - Storm Recovery Property			299,735,000		$ 0
Debt issuance costs			5,300,000
Accumulated amortization			0
Power supply agreements
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets			200,000	$ 2,300,000
Intangible assets, residual value			$ 0
Power supply agreements | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life			19 years