Affiliate Transactions - Summary of Balances Payable To or Due From Affiliates (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
ACCOUNTS RECEIVABLE	$ 14,643	$ 14,613
ACCOUNTS PAYABLE	13,092	13,092
Cleco Holdings
Related Party Transaction [Line Items]
ACCOUNTS RECEIVABLE	14,600	14,600
CLECO POWER
Related Party Transaction [Line Items]
ACCOUNTS RECEIVABLE	2,433	3,771
ACCOUNTS PAYABLE	11,252	12,448
CLECO POWER | Cleco Holdings
Related Party Transaction [Line Items]
ACCOUNTS RECEIVABLE	61	5
ACCOUNTS PAYABLE	1,113	1,138
CLECO POWER | Support Group
Related Party Transaction [Line Items]
ACCOUNTS RECEIVABLE	1,190	2,299
ACCOUNTS PAYABLE	10,139	11,305
CLECO POWER | Cleco Cajun
Related Party Transaction [Line Items]
ACCOUNTS RECEIVABLE	1,182	1,467
ACCOUNTS PAYABLE	$ 0	$ 5