Income Taxes, Uncertain Tax Positions (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Uncertain Tax Positions [Line Items]
Interest payable related to uncertain tax positions	$ 0		$ 0
Interest expense related to uncertain tax positions	0	$ 0
Liability for uncertain tax positions	0
Penalties	0	0
Cleco Power [Member]
Uncertain Tax Positions [Line Items]
Interest payable related to uncertain tax positions	0		$ 0
Interest expense related to uncertain tax positions	$ 0	$ 0