Affiliate Transactions - Schedule of Balances Payable To or Due From Affiliates (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Related Party
Related Party Transaction [Line Items]
AFFILIATE RECEIVABLE	$ 5,653	$ 35,459
AFFILIATE PAYABLE	19,939	21,368
CLECO POWER | Related Party
Related Party Transaction [Line Items]
AFFILIATE RECEIVABLE	8	1,174
AFFILIATE PAYABLE	13,041	11,389
CLECO POWER | Cleco Holdings
Related Party Transaction [Line Items]
AFFILIATE RECEIVABLE	8	185
AFFILIATE PAYABLE	3,840	318
CLECO POWER | Support Group
Related Party Transaction [Line Items]
AFFILIATE RECEIVABLE	0	989
AFFILIATE PAYABLE	$ 9,201	$ 11,071