Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Effective Income Tax Rate [Line Items]
Income before tax	$ 189,728	$ 208,077	$ 158,018
Statutory rate	21.00%	21.00%	21.00%
Tax expense at federal statutory rate	$ 39,843	$ 43,696	$ 33,184
Increase (decrease)
Flowthrough of tax benefits	(12,272)	(356)	5,100
State income taxes, net of federal benefit	12,177	9,619	7,190
Return to accrual adjustment	128	(3,862)	7,218
Permanent adjustments	(6,578)	(91)	(33)
Amortization of excess ADIT	(32,639)	(37,254)	(16,667)
Other, net	258	1,359	(274)
Total tax expense	$ 917	$ 13,111	$ 35,718
Effective rate	0.50%	6.30%	22.60%
CLECO POWER
Effective Income Tax Rate [Line Items]
Income before tax	$ 172,560	$ 124,735	$ 123,454
Statutory rate	21.00%	21.00%	21.00%
Tax expense at federal statutory rate	$ 36,238	$ 26,194	$ 25,925
Increase (decrease)
Flowthrough of tax benefits	(12,272)	(356)	5,100
State income taxes, net of federal benefit	12,109	6,343	6,303
Return to accrual adjustment	14	(3,831)	7,082
Amortization of excess ADIT	(32,639)	(37,254)	(16,667)
Other, net	(947)	(449)	(944)
Total tax expense	$ 2,503	$ (9,353)	$ 26,799
Effective rate	1.50%	(7.50%)	21.70%