Discontinued Operations - Schedule of Reclassification of Continuing Operations to Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on classification as held for sale	$ 0	$ (17,000)
Income from discontinued operations, net of income taxes	$ 0	31,962
Discontinued Operations, Held-for-sale | Cleco Cajun
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Electric operations		128,828
Other operations		31,534
Operating revenue, net		160,362
Fuel used for electric generation		15,196
Purchased power		61,940
Other operations and maintenance		23,291
Depreciation and amortization		356
Total operating expenses		100,783
Operating income		59,579
Other income, net		126
Interest, net		(80)
Loss on classification as held for sale		(17,000)
Income from discontinued operations before income taxes		42,625
Federal and state income tax expense		10,663
Income from discontinued operations, net of income taxes		$ 31,962