Fair Value Accounting Instruments - Net Changes in Net Fair Value of FTR Assets and Liabilities Classified as Level 3 (Details) - FTRs - Price risk derivatives - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	$ 6,143	$ 3,180	$ 5,778
Unrealized (losses) gains	(931)	2,567	187
Purchases	7,467	12,061	11,333
Settlements	(11,453)	(11,665)	(14,118)
Ending balance	1,226	6,143	3,180
CLECO POWER
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	4,918	3,216	5,725
Unrealized (losses) gains	(495)	2,828	450
Purchases	7,270	9,871	9,378
Settlements	(9,417)	(10,997)	(12,337)
Ending balance	$ 2,276	$ 4,918	$ 3,216