Summary of Significant Accounting Policies - Schedule of Changes in Allowance for Credit Losses, Other and Accounts Receivable (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
ACCOUNTS RECEIVABLE
Accounts receivable, beginning balance	$ 3,012	$ 1,147
Current period provision	142	1,240
Charge-offs	(1,662)	(1,637)
Recovery	330	377
Accounts receivable, ending balance	1,822	1,127
OTHER
Other, beginning balance	1,638	1,638
Current period provision	0	0
Charge-offs	0	0
Recovery	0	0
Other, ending balance	1,638	1,638
TOTAL
Total, beginning balance	4,650	2,785
Current period provision	142	1,240
Charge-offs	(1,662)	(1,637)
Recovery	330	377
Total, ending balance	3,460	2,765
CLECO POWER
ACCOUNTS RECEIVABLE
Accounts receivable, beginning balance	3,012	1,147
Current period provision	142	1,240
Charge-offs	(1,662)	(1,637)
Recovery	330	377
Accounts receivable, ending balance	$ 1,822	$ 1,127