Regulatory Assets and Liabilities - Narrative (Details) - LPSC - Dolet Hills - USD ($) $ in Millions		3 Months Ended
	Apr. 19, 2024	Mar. 31, 2024	Dec. 31, 2022
Regulatory Assets [Line Items]
Increase (decrease) in regulatory assets		$ (40.0)
CLECO POWER
Regulatory Assets [Line Items]
Increase (decrease) in regulatory assets		$ (40.0)
CLECO POWER | Production operations and maintenance expenses
Regulatory Assets [Line Items]
Regulatory asset, amortization period			20 years
CLECO POWER | Subsequent event
Regulatory Assets [Line Items]
Increase (decrease) in regulatory assets	$ (40.0)