Discontinued Operations - Schedule of Reclassification of Continuing Operations to Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Operating revenue, net
Loss - Cleco Cajun Divestiture	$ 0	$ (43,715)	$ (173,000)
Income from discontinued operations, net of income taxes	$ 0	45,517	14,642
Discontinued Operations, Held-for-sale | Cleco Cajun
Operating revenue, net
Electric operations		207,555	543,519
Other operations		50,992	125,816
Operating revenue, net		258,547	669,335
Fuel used for electric generation		21,061	126,130
Purchased power		93,074	230,284
Other operations and maintenance		37,685	87,599
Depreciation and amortization		4,336	15,891
Taxes other than income taxes		0	13,160
Total operating expenses		156,156	473,064
Operating income		102,391	196,271
Other income, net		240	47
Interest, net		1,396	(6,919)
Loss - Cleco Cajun Divestiture		(43,715)	(173,000)
Income from discontinued operations before income taxes		60,312	16,399
Federal and state income tax expense		14,795	1,757
Income from discontinued operations, net of income taxes		$ 45,517	$ 14,642