Schedule I Financial Statements of Cleco Holdings (Parent Company Only) - Condensed Statements of Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Condensed Statements of Comprehensive Income [Abstract]
Net income	$ 110,418	$ (15,227)	$ 188,811
Other comprehensive income (loss), net of tax
Postretirement benefits (loss) gain (net of tax expense of $973 in 2024, tax benefit of $1,905 in 2023, and tax expense of $8,728 in 2022)	2,428	(5,171)	23,688
Total other comprehensive (loss) income, net of tax	2,428	(5,171)	23,688
Comprehensive income (loss), net of tax	112,846	(20,398)	212,499
Tax (expense) benefit of postretirement benefits gain (loss)	(973)	1,905	(8,728)
Parent Company
Condensed Statements of Comprehensive Income [Abstract]
Net income	110,418	(15,227)	188,811
Other comprehensive income (loss), net of tax
Postretirement benefits (loss) gain (net of tax expense of $973 in 2024, tax benefit of $1,905 in 2023, and tax expense of $8,728 in 2022)	2,428	(5,171)	23,688
Total other comprehensive (loss) income, net of tax	2,428	(5,171)	23,688
Comprehensive income (loss), net of tax	112,846	(20,398)	212,499
Tax (expense) benefit of postretirement benefits gain (loss)	$ (973)	$ 1,905	$ (8,728)