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	49,496		49,496		40,064	40,064
Other comprehensive income (loss), net of tax	856			856	973		973
Balances, end of period at Jun. 30, 2020	2,693,358	2,454,276	255,739	(16,657)	1,754,429	1,776,041	(21,612)
Balances, beginning of period at Mar. 31, 2020	2,649,748	2,454,276	212,571	(17,099)	1,725,713	1,747,808	(22,095)
Increase (Decrease) in Equity [Roll Forward]
Net income	43,168		43,168		28,233	28,233
Other comprehensive income (loss), net of tax	442			442	483		483
Balances, end of period at Jun. 30, 2020	2,693,358	2,454,276	255,739	(16,657)	1,754,429	1,776,041	(21,612)
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	99,149		99,149		45,846	45,846
Other comprehensive income (loss), net of tax	208			208	873		873
Balances, end of period at Jun. 30, 2021	2,856,380	2,454,276	427,692	(25,588)	1,854,598	1,878,478	(23,880)
Balances, beginning of period at Mar. 31, 2021	2,777,978	2,454,276	348,870	(25,168)	1,826,826	1,851,057	(24,231)
Increase (Decrease) in Equity [Roll Forward]
Net income	78,822		78,822		27,421	27,421
Other comprehensive income (loss), net of tax	(420)			(420)	351		351
Balances, end of period at Jun. 30, 2021	$ 2,856,380	$ 2,454,276	$ 427,692	$ (25,588)	$ 1,854,598	$ 1,878,478	$ (23,880)