Discontinued Operations - Schedule of Reclassification of Continuing Operations to Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on classification as held for sale				$ (116,000)	$ 0
Income (loss) from discontinued operations, net of income taxes	$ 24,272		$ (29,738)	(77,899)	100,814
Discontinued Operations, Held-for-sale | CLECO CAJUN
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Electric operations	123,462		126,089	232,223	229,722
Other operations	26,469		36,712	61,182	72,324
Operating revenue, net	149,931		162,801	293,405	302,046
Fuel used for electric generation	23,548		18,954	111,147	(84,134)
Purchased power	47,962		95,522	108,587	163,630
Other operations and maintenance	23,945		21,942	47,313	41,000
Depreciation and amortization	502		21,929	15,015	43,819
Total operating expenses	95,957		158,347	282,062	164,315
Operating income	53,974		4,454	11,343	137,731
Other expense, net	(3)		(4)
Other income, net				131	84
Interest, net	(1,924)		(1,085)	(3,710)	(1,951)
Loss on classification as held for sale	(20,000)	$ (96,000)	0	(116,000)	0
Income (loss) from discontinued operations before income taxes	32,047		3,365	(108,236)	135,864
Federal and state income tax expense (benefit)	7,775		33,103	(30,337)	35,050
Income (loss) from discontinued operations, net of income taxes	$ 24,272		$ (29,738)	$ (77,899)	$ 100,814