Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Effective Income Tax Rate [Line Items]
(Loss) income from continuing operations before income taxes	$ (94,942)	$ 253,183	$ 161,346
Statutory rate	21.00%	21.00%	21.00%
Tax (benefit) expense at federal statutory rate	$ (19,938)	$ 53,168	$ 33,883
Increase (decrease)
Flowthrough of tax benefits	(7,847)	(12,272)	(356)
State income taxes, net of federal benefit	(2,256)	16,519	9,666
Return to accrual adjustment	(30)	(378)	(3,852)
Permanent adjustments	(388)	(4,621)	436
Amortization of excess ADIT	(33,518)	(32,639)	(37,254)
Other, net	(1,096)	258	(1,190)
Total tax (benefit) expense	$ (65,073)	$ 20,035	$ 1,333
Effective rate	68.50%	7.90%	0.80%
CLECO POWER
Effective Income Tax Rate [Line Items]
(Loss) income from continuing operations before income taxes	$ 132,715	$ 172,560	$ 124,735
Statutory rate	21.00%	21.00%	21.00%
Tax (benefit) expense at federal statutory rate	$ 27,870	$ 36,238	$ 26,194
Increase (decrease)
Flowthrough of tax benefits	(7,847)	(12,272)	(356)
State income taxes, net of federal benefit	12,296	12,109	6,343
Return to accrual adjustment	(204)	14	(3,831)
Amortization of excess ADIT	(33,518)	(32,639)	(37,254)
Other, net	(3,031)	(947)	(449)
Total tax (benefit) expense	$ (4,434)	$ 2,503	$ (9,353)
Effective rate	(3.30%)	1.50%	(7.50%)