Affiliate Transactions - Summary of Balances Payable To or Due From Affiliates (Details) - Cleco Power - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Affiliate Transaction [Line Items]
Accounts receivable - affiliate	$ 1,174	$ 4,543
Accounts payable - affiliate	11,389	13,200
Cleco Holdings
Affiliate Transaction [Line Items]
Accounts receivable - affiliate	185	14
Accounts payable - affiliate	318	367
Support Group
Affiliate Transaction [Line Items]
Accounts receivable - affiliate	989	1,104
Accounts payable - affiliate	11,071	12,833
Cleco Cajun
Affiliate Transaction [Line Items]
Accounts receivable - affiliate	0	3,425
Accounts payable - affiliate	$ 0	$ 0