Regulatory Assets and Liabilities - Narrative (Details)							1 Months Ended					12 Months Ended				24 Months Ended
	Jul. 01, 2022	Jun. 22, 2022 USD ($)	Jan. 31, 2022	Jul. 01, 2021	Dec. 04, 2020	Apr. 13, 2016 instrument	Jul. 31, 2021	Dec. 31, 2018	Jul. 31, 2014	Jun. 30, 2014	May 31, 2013 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2011 USD ($) treasury_rate_lock	Dec. 31, 2010	Dec. 31, 2021 USD ($) hurricane storm	Oct. 01, 2022 USD ($)	Sep. 21, 2022 USD ($)	Jul. 31, 2019 USD ($)	Oct. 31, 2016 USD ($)
Regulatory Assets and Liabilities [Line Items]
Provision for rate refund												$ 3,074,000	$ 5,682,000			$ 5,682,000
Treasury Lock
Regulatory Assets and Liabilities [Line Items]
Number of instruments settled | instrument						2
Excess ADIT | LPSC
Regulatory Assets and Liabilities [Line Items]
Regulatory liability												257,400,000	302,000,000			302,000,000
Financing costs
Regulatory Assets and Liabilities [Line Items]
Regulatory asset												6,904,000	7,248,000			7,248,000
Postretirement costs
Regulatory Assets and Liabilities [Line Items]
Regulatory asset												11,436,000	13,424,000			13,424,000
CLECO POWER
Regulatory Assets and Liabilities [Line Items]
Regulatory asset												589,297,000	759,165,000			759,165,000
Provision for rate refund												3,074,000	5,682,000			5,682,000			$ 79,200,000
Regulatory liability												152,849,000	95,544,000			$ 95,544,000
Securitized storm restoration costs, reserve for future costs												103,300,000
CLECO POWER | Interest Rate Swap
Regulatory Assets and Liabilities [Line Items]
Loss on settlements											$ 3,300,000
CLECO POWER | Treasury Lock
Regulatory Assets and Liabilities [Line Items]
Number of treasury locks | treasury_rate_lock														2
Loss on settlements														$ 26,800,000
CLECO POWER | Hurricanes
Regulatory Assets and Liabilities [Line Items]
Number of hurricanes | hurricane																4
Number of severe winter storms | storm																2
CLECO POWER | Deferred storm restoration costs - Hurricane Ida
Regulatory Assets and Liabilities [Line Items]
Securitized storm restoration costs, amount withdrawn		$ 79,600,000
Securitized storm restoration costs, reserve for future costs												15,500,000
Securitized storm restoration costs, reserve for future costs, current												9,400,000
CLECO POWER | Excess ADIT | LPSC
Regulatory Assets and Liabilities [Line Items]
Regulatory liability												257,400,000	302,000,000			$ 302,000,000
CLECO POWER | Storm reserves
Regulatory Assets and Liabilities [Line Items]
Regulatory liability												$ 118,762,000	0			0
CLECO POWER | Acquisition costs or transaction costs
Regulatory Assets and Liabilities [Line Items]
Regulatory assets amortization period												30 years
Regulatory asset												$ 1,807,000	1,913,000			1,913,000
CLECO POWER | Acquisition costs or transaction costs | Coughlin transaction costs
Regulatory Assets and Liabilities [Line Items]
Regulatory assets amortization period									35 years
Regulatory asset												$ 815,000	845,000			845,000
CLECO POWER | Accumulated deferred fuel
Regulatory Assets and Liabilities [Line Items]
Percentage of total fuel cost regulated by the LPSC												78.00%
Regulatory asset												$ 57,881,000	56,826,000			56,826,000
CLECO POWER | Affordability study
Regulatory Assets and Liabilities [Line Items]
Regulatory assets amortization period							10 years
Regulatory asset												11,715,000	13,094,000			13,094,000
CLECO POWER | AMI deferred revenue requirement
Regulatory Assets and Liabilities [Line Items]
Regulatory assets amortization period										11 years
Regulatory asset												1,499,000	2,045,000			2,045,000
CLECO POWER | Bayou Vista to Segura transmission project deferred revenue requirement
Regulatory Assets and Liabilities [Line Items]
Regulatory assets amortization period	12 months
Regulatory asset												2,510,000	1,392,000			1,392,000
CLECO POWER | COVID-19 executive order
Regulatory Assets and Liabilities [Line Items]
Regulatory assets amortization period					4 years
Regulatory asset												2,953,000	2,953,000			2,953,000
CLECO POWER | Stranded costs
Regulatory Assets and Liabilities [Line Items]
Regulatory asset												10,443,000	11,058,000			11,058,000
CLECO POWER | Stranded costs | Dolet Hills
Regulatory Assets and Liabilities [Line Items]
Regulatory assets amortization period			20 years
CLECO POWER | Energy efficiency
Regulatory Assets and Liabilities [Line Items]
Regulatory assets amortization period								4 years
Regulatory asset												235,000	1,645,000			1,645,000
CLECO POWER | Financing costs
Regulatory Assets and Liabilities [Line Items]
Regulatory asset												$ 6,456,000	6,826,000			6,826,000
CLECO POWER | Financing costs | Interest Rate Swap
Regulatory Assets and Liabilities [Line Items]
Regulatory asset											$ 2,900,000
CLECO POWER | Financing costs | Treasury Lock
Regulatory Assets and Liabilities [Line Items]
Regulatory asset														$ 7,400,000
CLECO POWER | Madison Unit 3 property taxes
Regulatory Assets and Liabilities [Line Items]
Regulatory assets amortization period												12 months
Regulatory asset												$ 13,038,000	8,362,000			8,362,000
CLECO POWER | Northlake Transmission Agreement
Regulatory Assets and Liabilities [Line Items]
Regulatory asset												2,900,000
CLECO POWER | Other Deferred Costs, Primarily Base Rate Case
Regulatory Assets and Liabilities [Line Items]
Regulatory assets amortization period				4 years
Regulatory asset												7,300,000
CLECO POWER | Coughlin Pipeline Project, Deferred Revenue
Regulatory Assets and Liabilities [Line Items]
Regulatory assets amortization period				4 years
Regulatory asset												3,400,000
CLECO POWER | Louisiana Tax Amendment, Revenue Requirements
Regulatory Assets and Liabilities [Line Items]
Regulatory asset												$ 2,300,000
CLECO POWER | Postretirement costs
Regulatory Assets and Liabilities [Line Items]
Regulatory assets amortization period												5 years
Regulatory asset												$ 47,317,000	$ 117,773,000			117,773,000
CLECO POWER | Production O&M Expenses
Regulatory Assets and Liabilities [Line Items]
Regulatory assets amortization period													3 years
Regulatory asset												2,400,000	$ 9,700,000			9,700,000
Retail jurisdictional portion													34,900,000			34,900,000
CLECO POWER | Production O&M Expenses | MAXIMUM
Regulatory Assets and Liabilities [Line Items]
Regulatory asset													25,000,000			25,000,000
CLECO POWER | St. Mary Clean Energy Center
Regulatory Assets and Liabilities [Line Items]
Regulatory assets amortization period				4 years
Regulatory asset												4,350,000	6,089,000			6,089,000
CLECO POWER | St. Mary Clean Energy Center | LPSC
Regulatory Assets and Liabilities [Line Items]
Disallowed recovery costs																		$ 15,000,000
Impairment of regulatory asset																		13,800,000
Provision for rate refund																		10,400,000
CLECO POWER | St. Mary Clean Energy Center, Refund Liability
Regulatory Assets and Liabilities [Line Items]
Regulatory asset												3,800,000					$ 3,800,000
CLECO POWER | St. Mary Clean Energy Center, Refund Liability | LPSC
Regulatory Assets and Liabilities [Line Items]
Regulatory asset																		$ 3,800,000
CLECO POWER | Training costs
Regulatory Assets and Liabilities [Line Items]
Regulatory assets amortization period															50 years
Regulatory asset												5,774,000	5,929,000			5,929,000
CLECO POWER | Tree trimming costs
Regulatory Assets and Liabilities [Line Items]
Regulatory asset												$ 6,377,000	$ 9,092,000			$ 9,092,000
Maximum amount of costs approved to defer																				$ 10,900,000