Condensed Consolidated Statements of Changes in Member’s Equity (Unaudited) - USD ($) $ in Thousands	Total	MEMBERSHIP INTEREST	RETAINED EARNINGS	AOCI	CLECO POWER	CLECO POWER MEMBERSHIP INTEREST	CLECO POWER AOCI
Balances, beginning of period at Dec. 31, 2019	$ 2,643,006	$ 2,454,276	$ 206,243	$ (17,513)	$ 1,713,392	$ 1,735,977	$ (22,585)
Increase (Decrease) in Equity [Roll Forward]
Net income	6,328		6,328		11,831	11,831
Other comprehensive income (loss), net of tax	414			414	490		490
Balances, end of period at Mar. 31, 2020	2,649,748	2,454,276	212,571	(17,099)	1,725,713	1,747,808	(22,095)
Balances, beginning of period at Dec. 31, 2020	2,757,023	2,454,276	328,543	(25,796)	1,807,879	1,832,632	(24,753)
Increase (Decrease) in Equity [Roll Forward]
Net income	20,327		20,327		18,425	18,425
Other comprehensive income (loss), net of tax	628			628	522		522
Balances, end of period at Mar. 31, 2021	$ 2,777,978	$ 2,454,276	$ 348,870	$ (25,168)	$ 1,826,826	$ 1,851,057	$ (24,231)