Intangible Assets and Goodwill - Schedule of Amortization Expense Recognized (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Storm Recovery Property | CLECO POWER
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 4,312	$ 4,176	$ 10,732	$ 10,523
Energy Transition Property | CLECO POWER
Finite-Lived Intangible Assets [Line Items]
Amortization expense	3,274	0	6,539	0
Power supply agreements
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 186	$ 186	$ 558	$ 2,695