Regulatory Assets and Liabilities - Summary of Regulatory Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets, net	$ 564,123	$ 801,363
Financing costs
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	6,904	7,248
Postretirement costs
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	11,436	13,424
Fair value of long-term debt
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	104,748	112,150
Debt issuance costs
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	4,587	4,920
CLECO POWER
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	589,297	759,165
Total regulatory liabilities	(152,849)	(95,544)
Total regulatory assets, net	436,448	663,621
CLECO POWER | Deferred taxes, net
Regulatory Assets and Liabilities [Line Items]
Total regulatory liabilities	(34,087)	(95,544)
CLECO POWER | Storm reserves
Regulatory Assets and Liabilities [Line Items]
Total regulatory liabilities	(118,762)	0
CLECO POWER | Acquisition/Transaction costs
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 1,807	1,913
Regulatory asset, amortization period	17 years
CLECO POWER | Acquisition/Transaction costs | Coughlin transaction costs
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 815	845
Regulatory asset, amortization period	26 years 6 months
CLECO POWER | Accumulated deferred fuel
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 57,881	56,826
CLECO POWER | Affordability study
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 11,715	13,094
Regulatory asset, amortization period	8 years 6 months
CLECO POWER | AFUDC equity gross-up
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 63,477	66,574
CLECO POWER | AMI deferred revenue requirement
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 1,499	2,045
Regulatory asset, amortization period	3 years 3 months
CLECO POWER | AROs
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 17,218	15,141
CLECO POWER | Bayou Vista to Segura transmission project deferred revenue requirement
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 2,510	1,392
Regulatory asset, amortization period	6 months
CLECO POWER | COVID-19 executive order
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 2,953	2,953
CLECO POWER | Deferred Lignite and Mine closure costs | Dolet Hills
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	133,600
CLECO POWER | Deferred Lignite and Mine closure costs | Lignite Mine
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	133,587	136,980
CLECO POWER | Deferred storm restoration costs - Hurricane Delta
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	109	17,113
CLECO POWER | Deferred storm restoration costs - Hurricane Ida
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	9,409	37,617
CLECO POWER | Deferred storm restoration costs - Hurricane Laura
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	457	54,282
CLECO POWER | Deferred storm restoration costs - Hurricane Zeta
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	9	3,296
CLECO POWER | Deferred storm restoration costs - Winter Storms Uri & Viola
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	0	1,912
CLECO POWER | Dolet Hills Power Station closure costs | Dolet Hills
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	147,082	145,844
CLECO POWER | Energy efficiency
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 235	1,645
Regulatory asset, amortization period	3 months
CLECO POWER | Financing costs
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 6,456	6,826
CLECO POWER | Interest costs
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	3,210	3,459
CLECO POWER | Madison Unit 3 property taxes
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	13,038	8,362
CLECO POWER | Non-service cost of postretirement benefits
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	14,810	12,950
CLECO POWER | Other
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	14,114	11,224
CLECO POWER | Postretirement costs
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	47,317	117,773
CLECO POWER | Production operations and maintenance expenses
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 10,443	11,058
Regulatory asset, amortization period	3 years
CLECO POWER | Rodemacher Unit 2 deferred costs | Rodemacher Unit 2 deferred costs
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 12,645	6,931
CLECO POWER | St. Mary Clean Energy Center
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 4,350	6,089
Regulatory asset, amortization period	2 years 6 months
CLECO POWER | Training costs
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 5,774	5,929
Regulatory asset, amortization period	37 years
CLECO POWER | Tree trimming costs
Regulatory Assets and Liabilities [Line Items]
Total regulatory assets	$ 6,377	$ 9,092
Regulatory asset, amortization period	2 years 3 months