Summary of Significant Accounting Policies - Schedule of Changes in Allowance for Credit Losses, Other and Accounts Receivable (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
ACCOUNTS RECEIVABLE
Accounts receivable, beginning balance	$ 845	$ 1,822	$ 1,337	$ 3,012
Current period provision	476	368	381	510
Charge-offs	(688)	(1,098)	(1,350)	(2,761)
Recovery	212	276	477	607
Accounts receivable, ending balance	845	1,368	845	1,368
OTHER
Other, beginning balance	1,638	1,638	1,638	1,638
Current period provision	0	0	0	0
Charge-offs	0	0	0	0
Recovery	0	0	0	0
Other, ending balance	1,638	1,638	1,638	1,638
TOTAL
Total, beginning balance	2,483	3,460	2,975	4,650
Current period provision	476	368	381	510
Charge-offs	(688)	(1,098)	(1,350)	(2,761)
Recovery	212	276	477	607
Total, ending balance	2,483	3,006	2,483	3,006
CLECO POWER
ACCOUNTS RECEIVABLE
Accounts receivable, beginning balance	845	1,822	1,337	3,012
Current period provision	476	368	381	510
Charge-offs	(688)	(1,098)	(1,350)	(2,761)
Recovery	212	276	477	607
Accounts receivable, ending balance	$ 845	$ 1,368	$ 845	$ 1,368