Leases - Supplemental Balance Sheet and Cash Flow Information and Other Supplemental Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
ROU assets
Operating lease right of use assets	$ 22,673	$ 24,014
Finance	$ 11,480	$ 12,600
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant, and equipment	Property, plant, and equipment
Total ROU assets	$ 34,153	$ 36,614
Current lease liabilities
Operating	$ 2,926	$ 2,854
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Finance	$ 836	$ 755
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Long-term debt outstanding, due within one year	Long-term debt outstanding, due within one year
Non-current lease liabilities
Operating lease liabilities	$ 19,819	$ 21,128
Finance	$ 12,971	$ 13,807
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt and finance leases, net	Long-term debt and finance leases, net
Total lease liabilities	$ 36,552	$ 38,544
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	3,720	3,938
Operating cash flows from finance leases	1,448	1,521
Financing cash flows from finance leases	$ 755	$ 682
Operating leases
Weighted-average remaining lease term	12 years 6 months	9 years
Weighted-average discount rate	4.36%	4.30%
Finance leases
Weighted-average remaining lease term	10 years 3 months 18 days	11 years 3 months 18 days
Weighted-average discount rate	10.18%	10.18%
CLECO POWER
ROU assets
Operating lease right of use assets	$ 22,628	$ 23,970
Finance	$ 11,480	$ 12,600
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant, and equipment	Property, plant, and equipment
Total ROU assets	$ 34,108	$ 36,570
Current lease liabilities
Operating	$ 2,903	$ 2,832
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Finance	$ 836	$ 755
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Long-term debt outstanding, due within one year	Long-term debt outstanding, due within one year
Non-current lease liabilities
Operating lease liabilities	$ 19,790	$ 21,100
Finance	$ 12,971	$ 13,807
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt and finance leases, net	Long-term debt and finance leases, net
Total lease liabilities	$ 36,500	$ 38,494
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	3,685	3,800
Operating cash flows from finance leases	1,448	1,521
Financing cash flows from finance leases	$ 755	$ 682
Operating leases
Weighted-average remaining lease term	11 years 4 months 24 days	9 years
Weighted-average discount rate	4.35%	4.30%
Finance leases
Weighted-average remaining lease term	10 years 3 months 18 days	11 years 3 months 18 days
Weighted-average discount rate	10.18%	10.18%