Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Effective Income Tax Rate [Line Items]
Income (loss) from continuing operations before income taxes	$ 78,957	$ (94,942)	$ 253,183
Statutory rate	21.00%	21.00%	21.00%
Tax expense (benefit) at federal statutory rate	$ 16,581	$ (19,938)	$ 53,168
Increase (decrease)
Flowthrough of tax benefits	(8,671)	(7,847)	(12,272)
State income taxes, net of federal benefit	5,907	(2,256)	16,519
Permanent adjustments	17,596	(388)	(4,621)
Amortization of excess ADIT	(15,977)	(33,518)	(32,639)
Other, net	(1,380)	(1,126)	(120)
Total tax expense (benefit)	$ 14,056	$ (65,073)	$ 20,035
Effective rate	17.80%	68.50%	7.90%
CLECO POWER
Effective Income Tax Rate [Line Items]
Income (loss) from continuing operations before income taxes	$ 157,424	$ 132,715	$ 172,560
Statutory rate	21.00%	21.00%	21.00%
Tax expense (benefit) at federal statutory rate	$ 33,059	$ 27,870	$ 36,238
Increase (decrease)
Flowthrough of tax benefits	(8,671)	(7,847)	(12,272)
State income taxes, net of federal benefit	11,321	12,296	12,109
Amortization of excess ADIT	(15,977)	(33,518)	(32,639)
Other, net	(1,226)	(3,235)	(933)
Total tax expense (benefit)	$ 18,506	$ (4,434)	$ 2,503
Effective rate	11.80%	(3.30%)	1.50%