Cleco Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (15,227)	$ 188,811	$ 194,966
Other comprehensive income, net of tax
Postretirement benefits (loss) gain , net of tax (benefit) expense	(5,171)	23,688	2,167
Total other comprehensive (loss) income, net of tax	(5,171)	23,688	2,167
Comprehensive (loss) income, net of tax	$ (20,398)	$ 212,499	$ 197,133