Derivative Instruments - Derivative Instruments as Recorded in Consolidated Balance Sheets (Details) - DERIVATIVES NOT DESIGNATED AS HEDGING INSTRUMENTS - USD ($)	Dec. 31, 2022	Dec. 31, 2021
GROSS ASSET (LIABILITY)
Derivative asset (liability), net	$ 106,393,000	$ 93,607,000
GROSS AMOUNTS OFFSET ON THE BALANCE SHEET
Derivative, collateral	(6,500,000)	0
Derivative, contract netting		0
NET ASSET (LIABILITY) ON THE BALANCE SHEET
Net asset (liability) on the balance sheet	99,893,000	93,607,000
GROSS AMOUNTS NOT OFFSET ON THE BALANCE SHEET
Collateral, assets	(53,000,000)	(15,000,000)
NET AMOUNT
Net amount	46,893,000	78,607,000
CLECO POWER
GROSS ASSET (LIABILITY)
Derivative asset (liability), net	(2,294,000)	4,918,000
FTRs
GROSS ASSET (LIABILITY)
Derivative asset	3,088,000	6,977,000
Derivative liability	(1,862,000)	(834,000)
GROSS AMOUNTS OFFSET ON THE BALANCE SHEET
Derivative asset, collateral	0
Derivative liability, collateral	0
Derivative asset, contract netting		0
Derivative liability, contract netting		0
NET ASSET (LIABILITY) ON THE BALANCE SHEET
Derivative asset	3,088,000	6,977,000
Derivative liability	(1,862,000)	(834,000)
GROSS AMOUNTS NOT OFFSET ON THE BALANCE SHEET
Collateral, assets	0	0
Collateral, liability	0	0
NET AMOUNT
Derivative asset, net	3,088,000	6,977,000
Derivative liability, net	(1,862,000)	(834,000)
FTRs | Energy risk management assets, current | CLECO POWER
GROSS ASSET (LIABILITY)
Derivative asset	2,570,000	5,515,000
FTRs | Energy risk management liabilities, current | CLECO POWER
GROSS ASSET (LIABILITY)
Derivative liability	(294,000)	(597,000)
Natural gas derivatives
GROSS ASSET (LIABILITY)
Derivative liability	(6,979,000)	(559,000)
GROSS AMOUNTS OFFSET ON THE BALANCE SHEET
Derivative liability, collateral	0
Derivative liability, contract netting		559,000
NET ASSET (LIABILITY) ON THE BALANCE SHEET
Derivative liability	(6,979,000)	0
GROSS AMOUNTS NOT OFFSET ON THE BALANCE SHEET
Collateral, liability	0	0
NET AMOUNT
Derivative liability, net	(6,979,000)	0
Natural gas derivatives | Energy risk management assets, current
GROSS ASSET (LIABILITY)
Derivative asset	53,251,000	37,061,000
GROSS AMOUNTS OFFSET ON THE BALANCE SHEET
Derivative asset, collateral	(6,500,000)
Derivative asset, contract netting		(559,000)
NET ASSET (LIABILITY) ON THE BALANCE SHEET
Derivative asset	46,751,000	36,502,000
GROSS AMOUNTS NOT OFFSET ON THE BALANCE SHEET
Collateral, assets	(32,578,000)	(15,000,000)
NET AMOUNT
Derivative asset, net	14,173,000	21,502,000
Natural gas derivatives | Energy risk management assets, noncurrent
GROSS ASSET (LIABILITY)
Derivative asset	58,895,000	50,962,000
GROSS AMOUNTS OFFSET ON THE BALANCE SHEET
Derivative asset, collateral	0
Derivative asset, contract netting		0
NET ASSET (LIABILITY) ON THE BALANCE SHEET
Derivative asset	58,895,000	50,962,000
GROSS AMOUNTS NOT OFFSET ON THE BALANCE SHEET
Collateral, assets	(20,422,000)	0
NET AMOUNT
Derivative asset, net	38,473,000	50,962,000
Natural gas derivatives | Energy risk management liabilities, current | CLECO POWER
GROSS ASSET (LIABILITY)
Derivative liability	$ (4,570,000)	$ 0