Discontinued Operations - Schedule of Reclassification of Continuing Operations to Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating revenue, net
Income (loss) from discontinued operations, net of income taxes	$ 45,517	$ 14,642	$ (44,337)
Discontinued Operations, Held-for-sale | Cleco Cajun
Operating revenue, net
Electric operations	207,555	543,519	496,042
Other operations	50,992	125,816	148,823
Operating revenue, net	258,547	669,335	644,865
Fuel used for electric generation	21,061	126,130	169,195
Purchased power	93,074	230,284	380,233
Other operations and maintenance	37,685	87,599	70,611
Depreciation and amortization	4,336	15,891	69,999
Taxes other than income taxes	0	13,160	12,330
Total operating expenses	156,156	473,064	702,368
Operating (loss) income	102,391	196,271	(57,503)
Other income, net	240	47	127
Interest, net	1,396	(6,919)	(6,079)
Loss - Cleco Cajun Divestiture	43,715	173,000	0
Income (loss) from discontinued operations before income taxes	60,312	16,399	(63,455)
Federal and state income tax expense (benefit)	14,795	1,757	(19,118)
Income (loss) from discontinued operations, net of income taxes	$ 45,517	$ 14,642	$ (44,337)