Income Taxes - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Uncertain Tax Positions [Line Items]
Liability for uncertain tax positions	$ 0		$ 0
Interest payable related to uncertain tax positions			0
Penalties	0	$ 0
Federal
Uncertain Tax Positions [Line Items]
Net operating losses			551,400,000
State
Uncertain Tax Positions [Line Items]
Net operating losses			82,600,000
CLECO POWER
Uncertain Tax Positions [Line Items]
Liability for uncertain tax positions	0		0
Interest payable related to uncertain tax positions	$ 0		$ 0