Affiliate Transactions - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Affiliate Transaction [Line Items]
Accounts receivable - affiliate	$ 14,613,000	$ 3,041,000
Accounts payable - affiliate	13,092,000	51,297,000
Cleco Holdings
Affiliate Transaction [Line Items]
Accounts receivable - affiliate	14,600,000	3,000,000
Accounts payable - affiliate	13,100,000	51,300,000
Cleco Holdings | Cleco Holdings
Affiliate Transaction [Line Items]
Contributions from member	219,600,000	0	$ 0
CLECO POWER
Affiliate Transaction [Line Items]
Accounts receivable - affiliate	3,771,000	13,612,000
Accounts payable - affiliate	12,448,000	69,729,000
Contributions from member	105,500,000
CLECO POWER | Cleco Holdings
Affiliate Transaction [Line Items]
Contributions from member	105,500,000	0	0
Distributions to member	0	0	$ 0
CLECO POWER | Support Group | Oxbow
Affiliate Transaction [Line Items]
Cost of mineral rights and land leases	$ 0	$ 2,700,000