Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Apr. 12, 2016	Dec. 31, 2016	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
SUCCESSOR
Operating activities
Net income (loss)		$ (24,113)	$ 94,437		$ 138,080
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation and amortization		141,544	187,426		186,326
Gain on sales of assets		0	(6)		(2)
Provision for doubtful accounts		4,473	797		2,778
Unearned compensation expense		1,147	5,837		3,745
Allowance for equity funds used during construction		(3,735)	(14,159)		(8,320)
Deferred income taxes		(21,053)	6,543		(41,966)
Deferred fuel costs		(8,192)	(18,549)		11,909
Cash surrender value of company-/trust-owned life insurance		(2,561)	2,726		(5,892)
Changes in assets and liabilities
Accounts receivable		(21,537)	3,123		(25,584)
Unbilled revenue		(837)	1,084		(2,129)
Fuel inventory and materials and supplies		2,880	(2,981)		(44,995)
Prepayments		(2,514)	153		2,852
Prepayments		5,183	18,898		14,705
Customer deposits		7,333	13,757		12,381
Provision for merger commitments		21,964	(3,273)		(12,971)
Postretirement benefit obligations		3,750	4,646		4,884
Regulatory assets and liabilities, net		13,750	3,032		12,531
Other deferred accounts		(9,441)	(9,748)		(8,380)
Taxes accrued		(24,210)	20,976		23,118
Interest accrued		(11,104)	1,124		(582)
Deferred compensation		(799)	(1,521)		308
Other operating		(2,038)	3,439		2,632
Net cash provided by operating activities		69,890	317,761		265,428
Investing activities
Additions to property, plant, and equipment		(144,444)	(291,061)		(236,932)
Allowance for equity funds used during construction		3,735	14,159		8,320
Proceeds from sale of property, plant, and equipment		766	995		17,499
Reimbursement for property loss		3,159	1,375		187
Contributions to equity investment in investee		0	0		0
Return of equity investment in tax credit fund		901	2,775		7,502
Issuance of note receivable		0	(16,800)		0
Other investing		622	397		(130)
Net cash provided by (used in) investing activities		(135,261)	(288,160)		(203,554)
Financing activities
Draws on credit facilities		15,000	0		179,000
Payments on credit facilities		(15,000)	0		(179,000)
Issuances of long-term debt		1,680,000	50,000		125,000
Repayments of long-term debt		(1,668,268)	(19,193)		(17,896)
Payments for long-term debt prepayment costs		(18,569)	0		0
Payment of financing costs		(8,655)	(791)		(463)
Dividends paid on common stock		(572)	0		0
Contribution from member		100,720	0		0
Distributions to member		(88,765)	(71,350)		(84,065)
Other financing		(1,890)	(383)		(1,819)
Net cash (used in) provided by financing activities		(5,999)	(41,717)		20,757
Net (decrease) increase in cash, cash equivalents, restricted cash, and restricted cash equivalents		(71,370)	(12,116)		82,631
Cash, cash equivalents, restricted cash, and restricted cash equivalents at beginning of period		140,941	152,202	[1]	69,571
Cash, cash equivalents, restricted cash, and restricted cash equivalents at end of period	$ 140,941	69,571	140,086	[2]	152,202	[1]	$ 69,571
Supplementary cash flow information
Interest paid, net of amount capitalized		97,927	124,154		118,009
Income taxes paid (refunded), net		4,263	272		(6)
Supplementary non-cash investing and financing activities
Accrued additions to property, plant, and equipment		17,599	56,450		31,083
Non-cash additions to property, plant, and equipment		0	1,224		3,015
Incurrence of capital lease obligation - barges		0	16,800		0
PREDECESSOR
Operating activities
Net income (loss)	(3,960)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation and amortization	45,869
Gain on sales of assets	(1,095)
Provision for doubtful accounts	1,212
Unearned compensation expense	3,276
Allowance for equity funds used during construction	(723)
Deferred income taxes	2,219
Deferred fuel costs	977
Cash surrender value of company-/trust-owned life insurance	(840)
Changes in assets and liabilities
Accounts receivable	(1,865)
Unbilled revenue	563
Fuel inventory and materials and supplies	19,312
Prepayments	2,395
Prepayments	8,348
Customer deposits	3,342
Provision for merger commitments	0
Postretirement benefit obligations	9,746
Regulatory assets and liabilities, net	5,178
Other deferred accounts	6,878
Taxes accrued	10,820
Interest accrued	17,909
Deferred compensation	(793)
Other operating	1,012
Net cash provided by operating activities	129,780
Investing activities
Additions to property, plant, and equipment	(42,392)
Allowance for equity funds used during construction	723
Proceeds from sale of property, plant, and equipment	1,932
Reimbursement for property loss	53
Contributions to equity investment in investee	(2,450)
Return of equity investment in tax credit fund	476
Issuance of note receivable	0
Other investing	0
Net cash provided by (used in) investing activities	(41,658)
Financing activities
Draws on credit facilities	3,000
Payments on credit facilities	(10,000)
Issuances of long-term debt	0
Repayments of long-term debt	(8,546)
Payments for long-term debt prepayment costs	0
Payment of financing costs	(43)
Dividends paid on common stock	(24,579)
Contribution from member	0
Distributions to member	0
Other financing	(717)
Net cash (used in) provided by financing activities	(40,885)
Net (decrease) increase in cash, cash equivalents, restricted cash, and restricted cash equivalents	47,237
Cash, cash equivalents, restricted cash, and restricted cash equivalents at beginning of period	93,704	140,941					93,704
Cash, cash equivalents, restricted cash, and restricted cash equivalents at end of period	140,941
Supplementary cash flow information
Interest paid, net of amount capitalized	2,478
Income taxes paid (refunded), net	(481)
Supplementary non-cash investing and financing activities
Accrued additions to property, plant, and equipment	10,619
Non-cash additions to property, plant, and equipment	0
Incurrence of capital lease obligation - barges	0
CLECO POWER
Operating activities
Net income (loss)			162,257		150,738		39,128
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation and amortization			168,248		165,200		152,978
Gain on sales of assets			(4)		0		(1,095)
Provision for doubtful accounts			797		2,677		5,512
Unearned compensation expense			1,873		1,972		1,572
Allowance for equity funds used during construction			(14,159)		(8,320)		(4,458)
Deferred income taxes			(11,545)		(34,191)		20,492
Deferred fuel costs			(18,549)		11,909		(7,215)
Changes in assets and liabilities
Accounts receivable			3,967		(25,696)		(23,306)
Accounts receivable, affiliate			426		1,865		2,612
Unbilled revenue			1,084		(2,129)		(274)
Fuel inventory and materials and supplies			(2,981)		(44,995)		22,192
Prepayments			107		2,745		228
Prepayments			22,419		11,005		9,140
Accounts payable, affiliate			(4,700)		1,349		(3,639)
Customer deposits			13,757		12,381		10,675
Provision for merger commitments			(3,273)		(12,971)		21,964
Postretirement benefit obligations			4,252		4,849		5,076
Regulatory assets and liabilities, net			1,044		10,544		17,506
Other deferred accounts			(5,421)		(8,137)		(3,249)
Taxes accrued			16,566		44,101		(29,535)
Interest accrued			1,169		(59)		(671)
Other operating			2,354		2,241		(1,308)
Net cash provided by operating activities			339,688		287,078		234,325
Investing activities
Additions to property, plant, and equipment			(289,153)		(235,252)		(186,143)
Allowance for equity funds used during construction			14,159		8,320		4,458
Proceeds from sale of property, plant, and equipment			995		4,078		2,698
Reimbursement for property loss			1,375		187		3,212
Contributions to equity investment in investee			0		0		(2,450)
Issuance of note receivable			(16,800)		0		0
Other investing			397		500		622
Net cash provided by (used in) investing activities			(289,027)		(222,167)		(177,603)
Financing activities
Draws on credit facilities			0		106,000		15,000
Payments on credit facilities			0		(106,000)		(15,000)
Issuances of long-term debt			50,000		125,000		330,000
Repayments of long-term debt			(19,193)		(17,896)		(326,814)
Payments for long-term debt prepayment costs			0		0		(18,569)
Contribution from member			0		0		50,000
Distributions to member			(121,400)		(135,000)		(110,000)
Other financing			(1,148)		(2,013)		(4,526)
Net cash (used in) provided by financing activities			(91,741)		(29,909)		(79,909)
Net (decrease) increase in cash, cash equivalents, restricted cash, and restricted cash equivalents			(41,080)		35,002		(23,187)
Cash, cash equivalents, restricted cash, and restricted cash equivalents at beginning of period	$ 91,142		102,957	[3]	67,955		91,142
Cash, cash equivalents, restricted cash, and restricted cash equivalents at end of period		$ 67,955	61,877	[4]	102,957	[3]	67,955
Supplementary cash flow information
Interest paid, net of amount capitalized			70,357		65,984		74,016
Income taxes paid (refunded), net			0		0		(485)
Supplementary non-cash investing and financing activities
Accrued additions to property, plant, and equipment			55,718		30,883		16,755
Non-cash additions to property, plant, and equipment			1,224		3,015		0
Incurrence of capital lease obligation - barges			$ 16,800		$ 0		$ 0

[1] Includes cash and cash equivalents of $119,040, current restricted cash and cash equivalents of $13,081, and non-current restricted cash and cash equivalents of $20,081.

[2] Includes cash and cash equivalents of $110,175, current restricted cash and cash equivalents of $11,241, and non-current restricted cash and cash equivalents of $18,670.

[3] Includes cash and cash equivalents of $69,816, current restricted cash and cash equivalents of $13,081, and non-current restricted cash and cash equivalents of $20,060.

[4] Includes cash and cash equivalents of $31,987, current restricted cash and cash equivalents of $11,241, and non-current restricted cash and cash equivalents of $18,649.