Discontinued Operations - Schedule of Assets and Liabilities (Details) - Discontinued Operations, Held-for-sale - Cleco Cajun - USD ($) $ in Thousands	Mar. 31, 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	$ 4,074	$ 10,567
Accounts receivable	49,309	60,750
Fuel inventory, at average cost	56,157	33,153
Materials and supplies, at average cost	34,574	34,195
Energy risk management assets	46,970	106,164
Property, plant, and equipment, net	624,598	650,936
Prepayments	26,431	23,601
Other assets	20,948	23,620
Loss recognized on classification as held for sale	(96,000)	0
Total assets held for sale - discontinued operations	799,630	979,534
Accounts payable	43,318	60,586
Deferred lease revenue	19,945	22,246
Intangible liabilities	12,695	13,956
Asset retirement obligations	44,661	63,725
Other liabilities	11,004	10,056
Total liabilities held for sale - discontinued operations	131,623	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