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, 2017	$ 2,096,357	$ 2,069,376	$ 29,902	$ (2,921)	$ 1,550,679	$ 1,564,362	$ (13,683)
Increase (Decrease) in Equity [Roll Forward]
Distributions to member	(60,500)		(60,500)		(121,400)	(121,400)
Net income	84,060		84,060		132,359	132,359
Other comprehensive income (loss), net of tax	551			551	1,052		1,052
Balances, end of period at Sep. 30, 2018	2,120,468	2,069,376	53,462	(2,370)	1,562,690	1,575,321	(12,631)
Balances, beginning of period at Jun. 30, 2018	2,093,447	2,069,376	26,702	(2,631)	1,549,331	1,562,386	(13,055)
Increase (Decrease) in Equity [Roll Forward]
Distributions to member	(20,600)		(20,600)		(50,400)	(50,400)
Net income	47,360		47,360		63,336	63,336
Other comprehensive income (loss), net of tax	261			261	424		424
Balances, end of period at Sep. 30, 2018	2,120,468	2,069,376	53,462	(2,370)	1,562,690	1,575,321	(12,631)
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	2,069,376	559,346	1,467	1,722,834	1,735,310	(12,476)
Balances, beginning of period at Jun. 30, 2019	2,574,661	2,069,376	503,781	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	$ 2,069,376	$ 559,346	$ 1,467	$ 1,722,834	$ 1,735,310	$ (12,476)