Litigation, Other Commitments and Contingencies, and Disclosures about Guarantees (Details) - USD ($)					1 Months Ended	3 Months Ended			12 Months Ended				36 Months Ended
	Mar. 14, 2025	Mar. 12, 2025	Apr. 19, 2024	Feb. 02, 2024	Sep. 30, 2015	Mar. 31, 2025	Sep. 30, 2024	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Feb. 29, 2020
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss						$ 10,100,000
Guarantor obligations, collateral held directly or by third parties, amount						0
Term Loan Agreement
Loss Contingencies [Line Items]
Debt repayment commitment						125,000,000
Energy Transition Property
Loss Contingencies [Line Items]
Acquisition price		$ 305,000,000
Performance Guarantee
Loss Contingencies [Line Items]
Maximum of potential payments						42,400,000
Indemnification Agreement
Loss Contingencies [Line Items]
Maximum of potential payments						40,000,000.0
Indemnification Agreement including fundamental organizational structure
Loss Contingencies [Line Items]
Maximum of potential payments						400,000,000.0
LPSC | Dolet Hills
Loss Contingencies [Line Items]
Decrease in regulatory assets								$ 40,000,000
Depreciation								40,000,000
Provision for rate refund and electric customer credits								1,300,000
FERC
Loss Contingencies [Line Items]
Recorded refund						500,000
CLECO POWER
Loss Contingencies [Line Items]
Recovery of from energy efficiency programs									$ 10,200,000	$ 10,200,000
Repayments of short-term debt		110,000,000
Loss contingency, estimate of possible loss						9,600,000
Guarantor obligations, collateral held directly or by third parties, amount						0
CLECO POWER | Term Loan Agreement
Loss Contingencies [Line Items]
Debt repayment commitment	$ 125,000,000	$ 125,000,000
CLECO POWER | Fuel Audit
Loss Contingencies [Line Items]
Fuel expense													$ 1,100,000,000
CLECO POWER | Indemnification Agreement
Loss Contingencies [Line Items]
Maximum of potential payments						40,000,000.0
CLECO POWER | Indemnification Agreement including fundamental organizational structure
Loss Contingencies [Line Items]
Maximum of potential payments						$ 400,000,000.0
CLECO POWER | LPSC
Loss Contingencies [Line Items]
Recovery of from energy efficiency programs											$ 8,500,000	$ 6,800,000
CLECO POWER | LPSC | Dolet Hills
Loss Contingencies [Line Items]
Decrease in regulatory assets			$ 40,000,000					40,000,000
Annual billing credit settlement			20,000,000				$ 20,000,000
Billing credit settlement			60,000,000	$ 60,000,000
Securitization amount			$ 305,000,000
Depreciation								40,000,000
Provision for rate refund and electric customer credits								$ 1,300,000
Gulf Coast Spinning start up costs
Loss Contingencies [Line Items]
Allegations by plaintiff, failure to perform					$ 6,500,000
Gulf Coast Spinning construction of cotton spinning facility
Loss Contingencies [Line Items]
Allegations by plaintiff, failure to perform					$ 60,000,000.0
Gulf Coast Spinning construction of cotton spinning facility | Gulf Coast Spinning Company, LLC | Diversified Lands LLC
Loss Contingencies [Line Items]
Loans payable														$ 2,000,000