Discontinued Operations - Schedule of Reclassification of Continuing Operations to Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on classification as held for sale	$ (96,000)	$ 0
(Loss) income from discontinued operations, net of income taxes	(102,171)	130,552
Discontinued Operations, Held-for-sale | Cleco Cajun
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Electric operations	108,761	103,633
Other operations	34,714	35,611
Operating revenue, net	143,475	139,244
Fuel used for electric generation	87,599	(103,087)
Purchased power	60,625	68,108
Other operations and maintenance	23,370	19,056
Depreciation and amortization	14,513	21,890
Total operating expenses	186,107	5,967
Operating (loss) income	(42,632)	133,277
Other income, net	134	87
Interest, net	(1,786)	(865)
Loss on classification as held for sale	(96,000)	0
(Loss) income from discontinued operations before income taxes	(140,284)	132,499
Federal and state income tax (benefit) expense	(38,113)	1,947
(Loss) income from discontinued operations, net of income taxes	$ (102,171)	$ 130,552