Income Taxes - Current and Deferred Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Components of Income Tax Expense [Line Items]
Current federal income tax expense (benefit)	$ 1,351	$ (2)	$ (2,634)
Deferred federal income tax expense (benefit)	2,546	(9,581)	21,865
Amortization of accumulated deferred investment tax credits	(134)	(142)	(159)
Total federal income tax (benefit) expense	3,763	(9,725)	19,072
Current state income tax expense (benefit)	7,611	(699)	2,636
Deferred state income tax (benefit) expense	(10,457)	23,535	14,010
Total state income tax expense	(2,846)	22,836	16,646
Total tax expense	917	13,111	35,718
Items charged or credited directly to member’s equity
Total tax expense (benefit) from items charged directly to member’s equity	8,728	394	(2,922)
Total federal and state income tax expense	9,645	13,505	32,796
Federal deferred
Items charged or credited directly to member’s equity
Total tax expense (benefit) from items charged directly to member’s equity	6,297	514	(2,202)
State deferred
Items charged or credited directly to member’s equity
Total tax expense (benefit) from items charged directly to member’s equity	2,431	(120)	(720)
CLECO POWER
Components of Income Tax Expense [Line Items]
Current federal income tax expense (benefit)	4,921	0	15,724
Deferred federal income tax expense (benefit)	(1,926)	(23,071)	(5,033)
Amortization of accumulated deferred investment tax credits	(134)	(142)	(159)
Total federal income tax (benefit) expense	2,861	(23,213)	10,532
Current state income tax expense (benefit)	2,406	0	5,069
Deferred state income tax (benefit) expense	(2,764)	13,860	11,198
Total state income tax expense	(358)	13,860	16,267
Total tax expense	2,503	(9,353)	26,799
Items charged or credited directly to member’s equity
Total tax expense (benefit) from items charged directly to member’s equity	3,618	2,052	(765)
Total federal and state income tax expense	6,121	(7,301)	26,034
CLECO POWER | Federal deferred
Items charged or credited directly to member’s equity
Total tax expense (benefit) from items charged directly to member’s equity	2,610	1,714	(576)
CLECO POWER | State deferred
Items charged or credited directly to member’s equity
Total tax expense (benefit) from items charged directly to member’s equity	$ 1,008	$ 338	$ (189)