Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CLECO POWER
Tax expense (benefit) of postretirement benefits gain (loss)	$ 968	$ (296)	$ 2,163
Tax expense amortization of interest rate derivatives to earnings	90	132	$ 132
SUCCESSOR
Tax expense (benefit) of postretirement benefits gain (loss)	1,868	(2,764)
Tax expense amortization of interest rate derivatives to earnings	$ 0	$ 0