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Accumulated Other Comprehensive Loss (Tables)
 12 Months Ended
Dec. 31, 2017
Accumulated Other Comprehensive Loss [Line Items]  
Components of Accumulated Other Comprehensive Loss
The components of accumulated other comprehensive loss are summarized in the following tables for Cleco and Cleco Power. All amounts are reported net of income taxes. Amounts in parentheses indicate debits.
Cleco
 
 
 
 
 
(THOUSANDS)
POSTRETIREMENT BENEFIT NET (LOSS) GAIN

 
NET (LOSS) GAIN ON CASH FLOW HEDGES

 
TOTAL AOCI

PREDECESSOR
 
 
 
 
 
Balances, Dec. 31, 2014
$
(26,726
)
 
$
(5,939
)
 
$
(32,665
)
Other comprehensive income before reclassifications
 
 
 
 
 
Postretirement benefit adjustments incurred during the year
2,790

 
—

 
2,790

Amounts reclassified from accumulated other comprehensive loss
 
 
 
 
 
Amortization of postretirement benefit net loss
3,079

 
—

 
3,079

Reclassification of net loss to interest charges
—

 
211

 
211

Net current-period other comprehensive income
5,869

 
211

 
6,080

Balances, Dec. 31, 2015
$
(20,857
)

$
(5,728
)

$
(26,585
)
Amounts reclassified from accumulated other comprehensive loss
 
 
 
 
 
Amortization of postretirement benefit net loss
587

 
—

 
587

Reclassification of net loss to interest charges
—

 
60

 
60

Net current-period other comprehensive income
587

 
60

 
647

Balances, Apr. 12, 2016
$
(20,270
)
 
$
(5,668
)
 
$
(25,938
)
SUCCESSOR(1)
 
 
 
 
 
Balances, Apr. 13, 2016
$
—

 
$
—

 
$
—

Other comprehensive income before reclassifications
 
 
 
 
 
Postretirement benefit adjustments incurred during the year
2,304

 
—

 
2,304

Amounts reclassified from accumulated other comprehensive income
 
 
 
 
 
Amortization of postretirement benefit net gain
(804
)
 
—

 
(804
)
Net current-period other comprehensive income
1,500


—


1,500

Balances, Dec. 31, 2016
$
1,500


$
—


$
1,500

Other comprehensive income before reclassifications
 
 
 
 

Postretirement benefit adjustments incurred during the year
(3,898
)
 
—

 
(3,898
)
Amounts reclassified from accumulated other comprehensive income
 
 
 
 
 
Amortization of postretirement benefit net gain
(523
)
 
—

 
(523
)
Net current-period other comprehensive loss
(4,421
)

—


(4,421
)
Balances, Dec. 31, 2017
$
(2,921
)

$
—


$
(2,921
)
(1)As a result of the Merger, AOCI was reduced to zero on April 13, 2016, as required by acquisition accounting.
Cleco Power [Member]  
Accumulated Other Comprehensive Loss [Line Items]  
Components of Accumulated Other Comprehensive Loss
Cleco Power
 
 
 
 
 
(THOUSANDS)
POSTRETIREMENT BENEFIT NET (LOSS) GAIN

 
NET (LOSS) GAIN ON CASH FLOW HEDGES

 
TOTAL AOCI

Balances, Dec. 31, 2014
$
(11,349
)
 
$
(5,939
)
 
$
(17,288
)
Other comprehensive loss before reclassifications
 
 
 
 
 
Postretirement benefit adjustments incurred during the year
(1,232
)
 
—

 
(1,232
)
Amounts reclassified from accumulated other comprehensive loss
 
 
 
 
 
Amortization of postretirement benefit net loss
1,217

 
—

 
1,217

Reclassification of net loss to interest charges
—

 
211

 
211

Net current-period other comprehensive (loss) income
(15
)
 
211

 
196

Balances, Dec. 31, 2015
$
(11,364
)
 
$
(5,728
)
 
$
(17,092
)
Other comprehensive loss before reclassifications
 
 
 
 
 
Postretirement benefit adjustments incurred during the year
3,913

 
—

 
3,913

Amounts reclassified from accumulated other comprehensive loss
 
 
 
 
 
Amortization of postretirement benefit net gain
(454
)
 
—

 
(454
)
Reclassification of net loss to interest charges
—

 
211

 
211

Net current-period other comprehensive income
3,459

 
211

 
3,670

Balances, Dec. 31, 2016
$
(7,905
)
 
$
(5,517
)
 
$
(13,422
)
Other comprehensive loss before reclassifications
 
 
 
 
 
Postretirement benefit adjustments incurred during the year
(948
)
 
—

 
(948
)
Amounts reclassified from accumulated other comprehensive loss
 
 
 
 
 
Amortization of postretirement benefit net loss
476

 
—

 
476

Reclassification of net loss to interest charges
—

 
211

 
211

Net current-period other comprehensive (loss) income
(472
)
 
211

 
(261
)
Balances, Dec. 31, 2017
$
(8,377
)
 
$
(5,306
)
 
$
(13,683
)