Fair Value Accounting - Significant Unobservable Inputs Used in Developing Fair Value of Level 3 Positions (Details) $ in Thousands	Mar. 31, 2020 USD ($) $ / MW	Dec. 31, 2019 USD ($) $ / MW
Minimum
FAIR VALUE
FORWARD PRICE RANGE (usd per mwh) | $ / MW	(1.40)	(2.57)
Maximum
FAIR VALUE
FORWARD PRICE RANGE (usd per mwh) | $ / MW	2.93	2.86
Measured On A Recurring Basis | Level 3
FAIR VALUE
ASSETS	$ 1,779	$ 6,822
LIABILITIES	$ 683	$ 1,044
CLECO POWER | Minimum
FAIR VALUE
FORWARD PRICE RANGE (usd per mwh) | $ / MW	(1.40)	(2.04)
CLECO POWER | Maximum
FAIR VALUE
FORWARD PRICE RANGE (usd per mwh) | $ / MW	2.93	2.86
CLECO POWER | Measured On A Recurring Basis
FAIR VALUE
ASSETS	$ 1,673	$ 6,311
LIABILITIES	524	586
CLECO POWER | Measured On A Recurring Basis | Level 3
FAIR VALUE
ASSETS	1,673	6,311
LIABILITIES	$ 524	$ 586