Jointly Owned Generation Units (Details) $ in Thousands	Dec. 31, 2025 USD ($) MW
Acadia Power Station common facilities
Jointly Owned Utility Plant Interests [Line Items]
UTILITY PLANT IN SERVICE	$ 19,142
ACCUMULATED DEPRECIATION	4,532
CONSTRUCTION WORK IN PROGRESS	$ 395
OWNERSHIP INTEREST PERCENTAGE	50.00%
Acadia Unit 1
Jointly Owned Utility Plant Interests [Line Items]
OWNERSHIP INTEREST PERCENTAGE	100.00%
Rodemacher Unit 2
Jointly Owned Utility Plant Interests [Line Items]
UTILITY PLANT IN SERVICE	$ 89,412
ACCUMULATED DEPRECIATION	61,900
CONSTRUCTION WORK IN PROGRESS	$ 671
OWNERSHIP INTEREST PERCENTAGE	30.00%
RATED CAPACITY (MW) | MW	523
OWNERSHIP INTEREST (MW) | MW	157
Common facilities - Nesbitt Unit 1 and Rodemacher Unit 2
Jointly Owned Utility Plant Interests [Line Items]
UTILITY PLANT IN SERVICE	$ 3,369
ACCUMULATED DEPRECIATION	862
CONSTRUCTION WORK IN PROGRESS	$ 15
OWNERSHIP INTEREST PERCENTAGE	62.00%
Common facilities - Rodemacher Unit 2 and Madison Unit 3
Jointly Owned Utility Plant Interests [Line Items]
UTILITY PLANT IN SERVICE	$ 3,245
ACCUMULATED DEPRECIATION	554
CONSTRUCTION WORK IN PROGRESS	$ 11
OWNERSHIP INTEREST PERCENTAGE	69.00%
Common facilities - Nesbitt Unit 1, Rodemacher Unit 2, and Madison Unit 3
Jointly Owned Utility Plant Interests [Line Items]
UTILITY PLANT IN SERVICE	$ 11,801
ACCUMULATED DEPRECIATION	2,769
CONSTRUCTION WORK IN PROGRESS	$ 112
OWNERSHIP INTEREST PERCENTAGE	77.00%
CLECO POWER | Acadia Power Station common facilities
Jointly Owned Utility Plant Interests [Line Items]
UTILITY PLANT IN SERVICE	$ 19,916
ACCUMULATED DEPRECIATION	5,306
CONSTRUCTION WORK IN PROGRESS	$ 395
OWNERSHIP INTEREST PERCENTAGE	50.00%
CLECO POWER | Acadia Unit 1
Jointly Owned Utility Plant Interests [Line Items]
OWNERSHIP INTEREST PERCENTAGE	100.00%
CLECO POWER | Rodemacher Unit 2
Jointly Owned Utility Plant Interests [Line Items]
UTILITY PLANT IN SERVICE	$ 162,992
ACCUMULATED DEPRECIATION	135,480
CONSTRUCTION WORK IN PROGRESS	$ 671
OWNERSHIP INTEREST PERCENTAGE	30.00%
RATED CAPACITY (MW) | MW	523
OWNERSHIP INTEREST (MW) | MW	157
CLECO POWER | Common facilities - Nesbitt Unit 1 and Rodemacher Unit 2
Jointly Owned Utility Plant Interests [Line Items]
UTILITY PLANT IN SERVICE	$ 4,776
ACCUMULATED DEPRECIATION	2,269
CONSTRUCTION WORK IN PROGRESS	$ 15
OWNERSHIP INTEREST PERCENTAGE	62.00%
CLECO POWER | Common facilities - Rodemacher Unit 2 and Madison Unit 3
Jointly Owned Utility Plant Interests [Line Items]
UTILITY PLANT IN SERVICE	$ 3,335
ACCUMULATED DEPRECIATION	644
CONSTRUCTION WORK IN PROGRESS	$ 11
OWNERSHIP INTEREST PERCENTAGE	69.00%
CLECO POWER | Common facilities - Nesbitt Unit 1, Rodemacher Unit 2, and Madison Unit 3
Jointly Owned Utility Plant Interests [Line Items]
UTILITY PLANT IN SERVICE	$ 21,844
ACCUMULATED DEPRECIATION	12,812
CONSTRUCTION WORK IN PROGRESS	$ 112
OWNERSHIP INTEREST PERCENTAGE	77.00%