Storm Securitization and Cost Recovery (Details) $ in Thousands		6 Months Ended	24 Months Ended
	Jun. 01, 2021 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($) storm hurricane	Jun. 22, 2022 USD ($)	Mar. 30, 2022 USD ($)
Unusual or Infrequent Item, or Both [Line Items]
Securitized storm restoration costs					$ 424,100
Hurricanes
Unusual or Infrequent Item, or Both [Line Items]
Capitalized storm restoration costs, interim storm recovery amount	$ 16,000
Storm recovery, hurricanes Laura, Delta, and Zeta and winter storms Uri and Viola
Unusual or Infrequent Item, or Both [Line Items]
Securitized storm restoration costs					220,100
Deferred storm restoration costs - Hurricane Ida
Unusual or Infrequent Item, or Both [Line Items]
Securitized storm restoration costs					95,000
Storm recovery, reserve for future storm costs
Unusual or Infrequent Item, or Both [Line Items]
Securitized storm restoration costs					100,000
Storm recovery, upfront securitization costs and ongoing costs
Unusual or Infrequent Item, or Both [Line Items]
Securitized storm restoration costs					$ 9,000
Storm recovery, wholesale operations and maintenance
Unusual or Infrequent Item, or Both [Line Items]
Estimate of storm restoration costs		$ 7,300
CLECO POWER
Unusual or Infrequent Item, or Both [Line Items]
Regulatory assets		691,111	$ 759,165
CLECO POWER | Cleco Power, float rate senior notes
Unusual or Infrequent Item, or Both [Line Items]
Debt redeemed				$ 325,000
CLECO POWER | Cleco Securitization I, senior secured storm recovery bonds
Unusual or Infrequent Item, or Both [Line Items]
Debt, face amount				$ 425,000
CLECO POWER | Hurricanes
Unusual or Infrequent Item, or Both [Line Items]
Regulatory assets		124,300
CLECO POWER | Hurricanes
Unusual or Infrequent Item, or Both [Line Items]
Number of hurricanes | hurricane			4
Number of severe winter storms | storm			2
Estimate of storm restoration costs			$ 342,700
Capitalized storm restoration costs		211,100
CLECO POWER | Storm recovery, wholesale operations and maintenance
Unusual or Infrequent Item, or Both [Line Items]
Estimate of storm restoration costs		$ 7,300