Discontinued Operations - Schedule of Assets and Liabilities (Details) - Discontinued Operations, Held-for-sale - CLECO CAJUN - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash, cash equivalents, and restricted cash equivalents	$ 4,082	$ 10,567
Accounts receivable	61,986	60,750
Fuel inventory, at average cost	95,147	33,153
Materials and supplies, at average cost	34,790	34,195
Energy risk management assets	42,752	106,164
Property, plant, and equipment, net	637,165	650,936
Prepayments	20,515	23,601
Other assets	20,991	23,620
Loss recognized on classification as held for sale	(116,000)	0
Total assets held for sale - discontinued operations	833,997	979,534
Accounts payable	52,455	60,586
Deferred lease revenue	19,945	22,246
Intangible liabilities	12,695	13,956
Asset retirement obligations	45,212	63,725
Other liabilities	15,347	10,056
Total liabilities held for sale - discontinued operations	145,654	170,569
Other
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Intangible assets - other	$ 32,569	$ 36,548