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, 2018	$ 2,124,740	$ 2,069,376	$ 53,578	$ 1,786	$ 1,594,533	$ 1,607,715	$ (13,182)
Increase (Decrease) in Equity [Roll Forward]
Contribution from member	384,900	384,900
Net income	120,868		120,868		127,595	127,595
Other comprehensive income (loss), net of tax	(319)			(319)	706		706
Balances, end of period at Sep. 30, 2019	2,630,189	2,454,276	174,446	1,467	1,722,834	1,735,310	(12,476)
Balances, beginning of period at Jun. 30, 2019	2,574,661	2,454,276	118,881	1,504	1,671,014	1,683,783	(12,769)
Increase (Decrease) in Equity [Roll Forward]
Net income	55,565		55,565		51,527	51,527
Other comprehensive income (loss), net of tax	(37)			(37)	293		293
Balances, end of period at Sep. 30, 2019	2,630,189	2,454,276	174,446	1,467	1,722,834	1,735,310	(12,476)
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	109,793		109,793		76,156	76,156
Other comprehensive income (loss), net of tax	1,304			1,304	1,409		1,409
Balances, end of period at Sep. 30, 2020	2,754,103	2,454,276	316,036	(16,209)	1,790,957	1,812,133	(21,176)
Balances, beginning of period at Jun. 30, 2020	2,693,358	2,454,276	255,739	(16,657)	1,754,429	1,776,041	(21,612)
Increase (Decrease) in Equity [Roll Forward]
Net income	60,297		60,297		36,092	36,092
Other comprehensive income (loss), net of tax	448			448	436		436
Balances, end of period at Sep. 30, 2020	$ 2,754,103	$ 2,454,276	$ 316,036	$ (16,209)	$ 1,790,957	$ 1,812,133	$ (21,176)