Segment Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Revenue
Base revenue	$ 182,399	$ 151,705
Fuel cost recovery revenue	87,543	99,766
Other operations	25,302	27,218
Affiliate revenue	0	0
Electric customer credits	0	(1,847)
Operating revenue, net	295,244	276,842
Depreciation and amortization	50,096	98,375
Interest income	7,133	1,408
Interest charges	36,421	40,762
Federal and state income tax expense (benefit)	9,057	37,671
Income (loss) from continuing operations, net of income taxes	40,312	(89,193)
Loss from discontinued operations, net of income taxes	0	31,962
Net income (loss)	40,312	(57,231)
Additions to property, plant, and equipment	68,289	36,964
Equity investment in investee	1,916		$ 1,916
Goodwill	1,490,797		1,490,797
Total segment assets	7,512,870		7,369,606
Other corporate costs and noncash items	1,022	22,385
EBITDA	129,775	108,592
Power supply agreements
Revenue
Amortization of intangible assets	200	2,300
CLECO POWER
Revenue
Other operations	23,456	27,218
Affiliate revenue	245	8,869
Electric customer credits	0	(1,847)
Operating revenue, net	293,829	288,034
Interest income	4,592	1,288
Interest charges	25,684	23,484
Federal and state income tax expense (benefit)	11,883	(960)
Income (loss) from continuing operations, net of income taxes	49,017	(6,648)
Net income (loss)	49,017	(6,648)
Equity investment in investee	1,916		1,916
Total segment assets	5,539,608		5,388,769
Cleco Cajun | Natural gas derivatives
Revenue
Net gain (loss) recognized in income on derivatives		(10,900)
OPERATING SEGMENTS | CLECO POWER
Revenue
Base revenue	182,585	154,028
Fuel cost recovery revenue	87,543	99,766
Other operations	23,456	27,218
Affiliate revenue	245	8,869
Electric customer credits		(1,847)
Operating revenue, net	293,829	288,034
Recoverable fuel and purchased power	87,561	99,788
Non-recoverable fuel and purchased power	3,148	7,794
Other operations and maintenance	57,908	56,797
Taxes other than income taxes	15,618	15,646
Other segment items	(181)	(583)
Depreciation and amortization	47,783	94,004
Interest income	4,592	1,288
Interest charges	25,684	23,484
Federal and state income tax expense (benefit)	11,883	(960)
Income (loss) from continuing operations, net of income taxes		(6,648)
Loss from discontinued operations, net of income taxes		0
Net income (loss)	49,017	(6,648)
Additions to property, plant, and equipment	67,832	39,494
Equity investment in investee	1,916		1,916
Goodwill	1,490,797		1,490,797
Total segment assets	7,030,405		6,879,566
EBITDA	129,775	108,592
Administrative and general	22,800	20,700
OTHER
Revenue
Base revenue	(186)	(2,323)
Fuel cost recovery revenue	0	0
Other operations	1,855	0
Affiliate revenue	20,831	29,667
Electric customer credits		0
Operating revenue, net	22,500	27,344
Depreciation and amortization	2,313	4,371
Interest income	2,705	293
Interest charges	10,901	17,452
Federal and state income tax expense (benefit)	(2,826)	38,631
Income (loss) from continuing operations, net of income taxes		(82,545)
Loss from discontinued operations, net of income taxes		31,962
Net income (loss)	(8,706)	(50,583)
Additions to property, plant, and equipment	457	(2,530)
Equity investment in investee	(849,117)		(848,952)
Goodwill	0		0
Total segment assets	(277,438)		(286,556)
OTHER | CLECO POWER | Power supply agreements
Revenue
Amortization of intangible assets	200	2,300
ELIMINATIONS
Revenue
Base revenue	0	0
Fuel cost recovery revenue	0	0
Other operations	(9)	0
Affiliate revenue	(21,076)	(38,536)
Electric customer credits		0
Operating revenue, net	(21,085)	(38,536)
Depreciation and amortization	0	0
Interest income	(164)	(173)
Interest charges	(164)	(174)
Federal and state income tax expense (benefit)	0	0
Income (loss) from continuing operations, net of income taxes		0
Loss from discontinued operations, net of income taxes		0
Net income (loss)	1	0
Additions to property, plant, and equipment	0	$ 0
Equity investment in investee	849,117		848,952
Goodwill	0		0
Total segment assets	$ 759,903		$ 776,596