XML 78 R60.htm IDEA: XBRL DOCUMENT v3.8.0.1
Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Apr. 12, 2016
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Apr. 13, 2016
Accumulated other comprehensive loss [Roll Forward]              
Balances, beginning of period         $ 2,046,763    
Net current-period other comprehensive income [Abstract]              
Total other comprehensive (loss) income, net of tax $ (44) $ (2,305)     (2,175)    
Balances, end of period 2,037,674       2,037,674    
Balances 2,037,674       2,046,763    
Total AOCI [Member]              
Accumulated other comprehensive loss [Roll Forward]              
Balances, beginning of period (631) 0     1,500    
Net current-period other comprehensive income [Abstract]              
Postretirement benefit adjustments during the period 0 (2,308)     (2,065)    
Amounts reclassified from accumulated other comprehensive income, net of tax (44) 3     (110)    
Total other comprehensive (loss) income, net of tax (44) (2,305)     (2,175)    
Balances, end of period (675) (2,305)   $ (2,305) (675) $ (2,305)  
Balances (631) 0   (2,305) 1,500 (2,305)  
Postretirement Benefit Net Loss [Member]              
Accumulated other comprehensive loss [Roll Forward]              
Balances, beginning of period (631) 0     1,500    
Net current-period other comprehensive income [Abstract]              
Postretirement benefit adjustments during the period 0 (2,308)     (2,065)    
Amounts reclassified from accumulated other comprehensive income, net of tax (44) 3     (110)    
Total other comprehensive (loss) income, net of tax (44) (2,305)     (2,175)    
Balances, end of period (675) (2,305)   (2,305) (675) (2,305)  
Balances (631) 0   (2,305) 1,500 (2,305)  
Net Loss on Cash Flow Hedges [Member]              
Accumulated other comprehensive loss [Roll Forward]              
Balances, beginning of period 0 0     0    
Net current-period other comprehensive income [Abstract]              
Total other comprehensive (loss) income, net of tax 0 0     0    
Balances, end of period 0 0   0 0 0  
Balances 0 0   0 0 0  
Predecessor              
Net current-period other comprehensive income [Abstract]              
Total other comprehensive (loss) income, net of tax     $ 647        
Predecessor | Total AOCI [Member]              
Accumulated other comprehensive loss [Roll Forward]              
Balances, beginning of period     (26,585) (25,938)   (26,585)  
Net current-period other comprehensive income [Abstract]              
Amounts reclassified from accumulated other comprehensive income, net of tax     587        
Total other comprehensive (loss) income, net of tax     647        
Balances, end of period     (25,938)        
Predecessor | Total AOCI [Member] | Interest Expense [Member]              
Net current-period other comprehensive income [Abstract]              
Amounts reclassified from accumulated other comprehensive income, net of tax     60        
Predecessor | Postretirement Benefit Net Loss [Member]              
Accumulated other comprehensive loss [Roll Forward]              
Balances, beginning of period     (20,857) (20,270)   (20,857)  
Net current-period other comprehensive income [Abstract]              
Amounts reclassified from accumulated other comprehensive income, net of tax     587        
Total other comprehensive (loss) income, net of tax     587        
Balances, end of period     (20,270)        
Predecessor | Net Loss on Cash Flow Hedges [Member]              
Accumulated other comprehensive loss [Roll Forward]              
Balances, beginning of period     (5,728) (5,668)   (5,728)  
Net current-period other comprehensive income [Abstract]              
Total other comprehensive (loss) income, net of tax     60        
Balances, end of period     (5,668)        
Predecessor | Net Loss on Cash Flow Hedges [Member] | Interest Expense [Member]              
Net current-period other comprehensive income [Abstract]              
Amounts reclassified from accumulated other comprehensive income, net of tax     60        
Successor              
Net current-period other comprehensive income [Abstract]              
Total other comprehensive (loss) income, net of tax       (2,305) (2,175)    
Successor | Total AOCI [Member]              
Net current-period other comprehensive income [Abstract]              
Postretirement benefit adjustments during the period       (2,308)      
Amounts reclassified from accumulated other comprehensive income, net of tax       3      
Total other comprehensive (loss) income, net of tax       (2,305)      
Balances, end of period   (2,305)   (2,305)   (2,305)  
Balances   (2,305)   (2,305)   (2,305) $ 0
Successor | Postretirement Benefit Net Loss [Member]              
Net current-period other comprehensive income [Abstract]              
Postretirement benefit adjustments during the period       (2,308)      
Amounts reclassified from accumulated other comprehensive income, net of tax       3      
Total other comprehensive (loss) income, net of tax       (2,305)      
Balances, end of period   (2,305)   (2,305)   (2,305)  
Balances   (2,305)   (2,305)   (2,305) 0
Successor | Net Loss on Cash Flow Hedges [Member]              
Net current-period other comprehensive income [Abstract]              
Total other comprehensive (loss) income, net of tax       0      
Balances, end of period   0   0   0  
Balances   0   0   0 $ 0
Cleco Power [Member]              
Accumulated other comprehensive loss [Roll Forward]              
Balances, beginning of period         1,535,202    
Net current-period other comprehensive income [Abstract]              
Total other comprehensive (loss) income, net of tax 220 2,233     99 2,720  
Balances, end of period 1,568,740       1,568,740    
Balances 1,568,740       1,535,202    
Cleco Power [Member] | Total AOCI [Member]              
Accumulated other comprehensive loss [Roll Forward]              
Balances, beginning of period (13,543) (16,605) (17,092)   (13,422) (17,092)  
Net current-period other comprehensive income [Abstract]              
Postretirement benefit adjustments during the period 0 2,013     (584) 2,013  
Amounts reclassified from accumulated other comprehensive income, net of tax 167 167     524 548  
Total other comprehensive (loss) income, net of tax 220 2,233     99 2,720  
Balances, end of period (13,323) (14,372)   (14,372) (13,323) (14,372)  
Balances (13,543) (16,605) (17,092) (14,372) (13,422) (17,092)  
Cleco Power [Member] | Total AOCI [Member] | Interest Expense [Member]              
Net current-period other comprehensive income [Abstract]              
Amounts reclassified from accumulated other comprehensive income, net of tax 53 53     159 159  
Cleco Power [Member] | Postretirement Benefit Net Loss [Member]              
Accumulated other comprehensive loss [Roll Forward]              
Balances, beginning of period (8,132) (10,983) (11,364)   (7,905) (11,364)  
Net current-period other comprehensive income [Abstract]              
Postretirement benefit adjustments during the period 0 2,013     (584) 2,013  
Amounts reclassified from accumulated other comprehensive income, net of tax 167 167     524 548  
Total other comprehensive (loss) income, net of tax 167 2,180     (60) 2,561  
Balances, end of period (7,965) (8,803)   (8,803) (7,965) (8,803)  
Balances (8,132) (10,983) (11,364) (8,803) (7,905) (11,364)  
Cleco Power [Member] | Net Loss on Cash Flow Hedges [Member]              
Accumulated other comprehensive loss [Roll Forward]              
Balances, beginning of period (5,411) (5,622) (5,728)   (5,517) (5,728)  
Net current-period other comprehensive income [Abstract]              
Total other comprehensive (loss) income, net of tax 53 53     159 159  
Balances, end of period (5,358) (5,569)   (5,569) (5,358) (5,569)  
Balances (5,411) (5,622) $ (5,728) $ (5,569) (5,517) (5,728)  
Cleco Power [Member] | Net Loss on Cash Flow Hedges [Member] | Interest Expense [Member]              
Net current-period other comprehensive income [Abstract]              
Amounts reclassified from accumulated other comprehensive income, net of tax $ 53 $ 53     $ 159 $ 159