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Derivatives and Hedging (Tables)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Derivative [Line Items]    
Notional Amounts Of Derivative Instruments Related To Interest Rate Risk
                      
  December 31, 2013 December 31, 2012
(in millions)Duke Energy Duke Energy Ohio Duke Energy Progress Energy Duke Energy Progress Duke Energy Ohio Duke Energy Indiana
Cash flow hedges(a)$ 798 $ $ 1,047 $ $ $ $
Undesignated contracts  34   27   290   50   50   27   200
Fair value hedges      250       250  
 Total notional amount$ 832 $ 27 $ 1,587 $ 50 $ 50 $ 277 $ 200
                      
(a)Duke Energy includes amounts related to non-recourse variable rate long-term debt of VIEs of $584 million at December 31, 2013 and $620 million at December 31, 2012.
                      
 
Underlying Notional Amounts for Commodity Derivative Instruments Accounted for at Fair Value
  December 31, 2013
  Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana
Electricity (Gigawatt-hours)(a) 71,466  1,205  925  925   69,362  203
Natural gas (millions of decatherms) 636   363  141  222  274 
               
  December 31, 2012
  Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana
Electricity (Gigawatt-hours)(a) 52,104  2,028  1,850  1,850   51,215  97
Natural gas (millions of decatherms) 528   348  118  230  180 
               
Location And Fair Value Amounts Of Derivatives Reflected In The Condensed Consolidated Balance Sheets
             
             
  December 31,
  2013 2012
(in millions)Asset Liability Asset Liability
Derivatives Designated as Hedging Instruments           
Commodity contracts           
Current liabilities: other$ $ 1 $ $ 2
Deferred credits and other liabilities: other        1
Interest rate contracts           
Current assets: other      2  
Investments and other assets: other  27     7  
Current liabilities: Other    18     81
Deferred credits and other liabilities: other    4     35
Total Derivatives Designated as Hedging Instruments  27   23   9   119
Derivatives Not Designated as Hedging Instruments           
Commodity contracts           
Current assets: other  201   158   41   2
Investments and other assets: other  215   131   106   50
Current liabilities: other  13   153   106   407
Deferred credits and other liabilities: other  5   166   2   255
Interest rate contracts            
Current liabilities: other    1     76
Deferred credits and other liabilities: other    4     8
Total Derivatives Not Designated as Hedging Instruments  434   613   255   798
Total Derivatives$ 461 $ 636 $ 264 $ 917
             
 
Offsetting Assets and Liabilities
  December 31, 2013 
  Derivative Assets  Derivative Liabilities 
(in millions)Current(a) Non-Current(b)  Current(c) Non-Current(d) 
Gross amounts recognized$ 214 $ 233  $ 322 $ 299 
Gross amounts offset  (179)   (138)    (192)   (155) 
Net amount subject to master netting  35   95    130   144 
Amounts not subject to master netting    14    4   11 
Net amounts recognized on the Consolidated Balance Sheet$ 35 $ 109  $ 134 $ 155 
               
  December 31, 2012 
  Derivative Assets  Derivative Liabilities 
(in millions)Current(a) Non-Current(b)  Current(c) Non-Current(d) 
Gross amounts recognized$ 127 $ 96  $ 402 $ 295 
Gross amounts offset  (114)   (54)    (151)   (90) 
Net amounts subject to master netting  13   42    251   205 
Amounts not subject to master netting  22   19    166   54 
Net amounts recognized on the Consolidated Balance Sheet$ 35 $ 61  $ 417 $ 259 
               
Cash Flow Hedges-Location And Amount Of Pre-Tax (Losses) Recognized In Comprehensive Income
The following table shows the gains and losses during the year recognized on cash flow hedges and the line items on the Consolidated Statements of Operations where such gains and losses are included when reclassified from AOCI.
          
  Years Ended December 31,
(in millions)2013 2012 2011
Pretax Gains (Losses) Recorded in AOCI        
Interest rate contracts(a)$ 79 $ (23) $ (88)
Commodity contracts  1   1  
Total Pretax Gains (Losses) Recorded in AOCI$ 80 $ (22) $ (88)
Location of Pretax Gains and (Losses) Reclassified from AOCI into Earnings        
Interest rate contracts        
Interest expense$ (2) $ 2 $ (5)
Total Pretax Gains (Losses) Reclassified from AOCI into Earnings$ (2) $ 2 $ (5)
          
(a)Reclassified to earnings as interest expense over the term of the related debt.
          
 
Undesignated Contracts - Location And Amount Of Pre-Tax Gains And (Losses) Recognized In Income Or As Regulatory Assets Or Liabilities
          
  Years Ended December 31,
(in millions)2013 2012 2011
Location of Pretax Gains and (Losses) Recognized in Earnings        
Commodity contracts        
Revenue: Regulated electric$ 11 $ (23) $
Revenue: Nonregulated electric, natural gas and other  43   38   (59)
Other income and expenses    (2)  
Fuel used in electric generation and purchased power-regulated  (200)   (194)  
Fuel used in electric generation and purchased power - nonregulated  (100)   2   (1)
Interest rate contracts        
Interest expense  (18)   (8)  
Total Pretax (Losses) Gains Recognized in Earnings$ (264) $ (187) $ (60)
Location of Pretax Gains and (Losses) Recognized as Regulatory Assets or Liabilities        
Commodity contracts(a)        
Regulatory assets$ 10 $ (2) $ (1)
Regulatory liabilities  15   36   17
Interest rate contracts(b)        
Regulatory assets  55   10   (165)
Regulatory liabilities      (60)
Total Pretax Gains (Losses) Recognized as Regulatory Assets or Liabilities$ 80 $ 44 $ (209)
          
(a)Reclassified to earnings to match recovery through the fuel clause.
(b)Reclassified to earnings as interest expense over the term of the related debt.
          
 
Schedule Of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features
  December 31, 2013
(in millions)Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio
Aggregate fair value amounts of derivative instruments in a net liability position$ 525 $ 168 $ 60 $ 108 $ 355
Fair value of collateral already posted  135   10     10   125
Additional cash collateral or letters of credit in the event credit-risk-related contingent features were triggered  205   158   60   98   47
                
  December 31, 2012
(in millions)Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio
Aggregate fair value amounts of derivative instruments in a net liability position$ 466 $ 286 $ 108 $ 178 $ 176
Fair Value of Collateral already posted  163   59   9   50   104
Additional cash collateral or letters of credit in the event credit-risk-related contingent features were triggered  230   227   99   128   2
                
Schedule Of Cash Collateral Under Master Netting Arrangements
             
  December 31,
  2013 2012
(in millions)Receivables Payables Receivables Payables
Duke Energy           
Amounts offset against net derivative positions$ 30 $ $ 73 $
Amounts not offset against net derivative positions  122     93  
Progress Energy           
Amounts offset against net derivative positions$ 10 $ $ 58 $
Amounts not offset against net derivative positions      1  
Duke Energy Progress           
Amounts offset against net derivative positions$ $ $ 9 $
Amounts not offset against net derivative positions       
Duke Energy Florida           
Amounts offset against net derivative positions$ 10 $ $ 49 $
Amounts not offset against net derivative positions      1  
Duke Energy Ohio           
Amounts offset against net derivative positions$ 19   $ 15 $
Amounts not offset against net derivative positions  115 $   92  
Duke Energy Indiana           
Amounts offset against net derivative positions    1    
Amounts not offset against net derivative positions$ 1 $ $ $
             
 
Duke Energy Carolinas [Member]
   
Derivative [Line Items]    
Location And Fair Value Amounts Of Derivatives Reflected In The Condensed Consolidated Balance Sheets
             
  December 31,
  2013 2012
(in millions)Asset Liability Asset Liability
Derivatives Not Designated as Hedging Instruments           
Commodity contracts           
Current liabilities: other    1     6
Deferred credits and other liabilities: other    1     6
Total Derivatives Not Designated as Hedging Instruments    2     12
Total Derivatives$ $ 2 $ $ 12
             
 
Offsetting Assets and Liabilities
  December 31, 2013 
  Derivative Assets  Derivative Liabilities 
(in millions)Current(a) Non-Current(b)  Current(c) Non-Current(d) 
Amounts not subject to master netting$ $  $ 1 $ 1 
Net amounts recognized on the Consolidated Balance Sheet$ $  $ 1 $ 1 
               
  December 31, 2012 
  Derivative Assets  Derivative Liabilities 
(in millions)Current(a) Non-Current(b)  Current(c) Non-Current(d) 
Amounts not subject to master netting$ $  $ 6 $ 6 
Net amounts recognized on the Consolidated Balance Sheet$ $  $ 6 $ 6 
               
Cash Flow Hedges-Location And Amount Of Pre-Tax (Losses) Recognized In Comprehensive Income
The following table shows the gains and losses during the year recognized on cash flow hedges and the line items on the Consolidated Statements of Operations and Comprehensive Income where such gains and losses are included when reclassified from AOCI.
          
Losses on cash flow hedges reclassified at Duke Energy Carolinas during the year ended December 31, 2013 and 2012 were not material.
          
  Years Ended December 31,
(in millions)2013 2012 2011
Location of Pretax Gains and (Losses) Reclassified from AOCI into Earnings        
Interest rate contracts        
Interest expense$ (3) $ (3) $ (5)
Total Pretax Gains (Losses) Reclassified from AOCI into Earnings$ (3) $ (3) $ (5)
          
 
Undesignated Contracts - Location And Amount Of Pre-Tax Gains And (Losses) Recognized In Income Or As Regulatory Assets Or Liabilities
          
  Years Ended December 31,
(in millions)2013 2012 2011
Location of Pretax Gains and (Losses) Recognized in Earnings        
Commodity contracts        
Revenue: Regulated electric$ (12) $ (12) $
Total Pretax (Losses) Gains Recognized in Earnings$ (12) $ (12) $
Location of Pretax Gains and (Losses) Recognized as Regulatory Assets or Liabilities        
Interest rate contracts        
Regulatory assets$ $ $ (94)
Regulatory liabilities      (60)
Total Pretax Gains (Losses) Recognized as Regulatory Assets or Liabilities$ $ $ (154)
          
 
Progress Energy [Member]
   
Derivative [Line Items]    
Location And Fair Value Amounts Of Derivatives Reflected In The Condensed Consolidated Balance Sheets
             
  December 31,
  2013 2012
(in millions)Asset Liability Asset Liability
Derivatives Designated as Hedging Instruments           
Commodity contracts           
Current liabilities: other$ $ 1 $ $ 2
Deferred credits and other liabilities: other    4     1
Total Derivatives Designated as Hedging Instruments    5     3
Derivatives Not Designated as Hedging Instruments           
Commodity contracts           
Current assets: other  3   2   3  
Investments and other assets: other  2   1   8  
Current liabilities: other  11   105     231
Deferred credits and other liabilities: other  4   91     195
Interest rate contracts            
Current liabilities: other        11
Total Derivatives Not Designated as Hedging Instruments  20   199   11   437
Total Derivatives$ 20 $ 204 $ 11 $ 440
             
 
Offsetting Assets and Liabilities
  December 31, 2013 
  Derivative Assets  Derivative Liabilities 
(in millions)Current(a) Non-Current(b)  Current(c) Non-Current(d) 
Gross amounts recognized$ 15 $ 5  $ 107 $ 93 
Gross amounts offset  (13)   (4)    (17)   (10) 
Net amount subject to master netting  2   1    90   83 
Amounts not subject to master netting         4 
Net amounts recognized on the Consolidated Balance Sheet$ 2 $ 1  $ 90 $ 87 
               
  December 31, 2012 
  Derivative Assets  Derivative Liabilities 
(in millions)Current(a) Non-Current(b)  Current(c) Non-Current(d) 
Gross amounts recognized$ 3 $ 8  $ 244 $ 192 
Gross amounts offset       (22)   (36) 
Net amounts subject to master netting  3   8    222   156 
Amounts not subject to master netting         4 
Net amounts recognized on the Consolidated Balance Sheet$ 3 $ 8  $ 222 $ 160 
               
Cash Flow Hedges-Location And Amount Of Pre-Tax (Losses) Recognized In Comprehensive Income
The following table shows the gains and losses during the year recognized on cash flow hedges and the line items on the Consolidated Statements of Operations and Comprehensive Income or Consolidated Balance Sheet where such gains and losses are included when reclassified from AOCI.
          
  Years Ended December 31,
(in millions)2013 2012 2011
Pretax Gains (Losses) Recorded in AOCI        
Commodity contracts$ 1 $ 1 $ (3)
Interest rate contracts(a)    (11)   (141)
Total Pretax Gains (Losses) Recorded in AOCI$ 1 $ (10) $ (144)
Location of Pretax Gains and (Losses) Reclassified from AOCI into Earnings        
Interest rate contracts        
Interest expense$ $ (14) $ (13)
Total Pretax Gains (Losses) Reclassified from AOCI into Earnings$ $ (14) $ (13)
Location of Pretax Gains and (Losses) Reclassified from AOCI to Regulatory Assets or Liabilities(b)        
Interest rate contracts        
Regulatory assets$ $ (159) $
Total Pretax Gains (Losses) Recognized as Regulatory Assets or Liabilities$ $ (159) $
          
(a)Reclassified to earnings as interest expense over the term of the related debt.
(b)Effective with the merger, Progress Energy no longer designates interest rate derivatives for regulated operations as cash flow hedges. As a result, the pretax losses on derivatives as of the date of the merger were reclassified from AOCI to Regulatory assets.
          
 
Undesignated Contracts - Location And Amount Of Pre-Tax Gains And (Losses) Recognized In Income Or As Regulatory Assets Or Liabilities
          
  Years Ended December 31,
(in millions)2013 2012 2011
Location of Pretax Gains and (Losses) Recognized in Earnings        
Commodity contracts        
Operating revenues$ 11 $ (11) $ 1
Fuel used in electric generation and purchased power  (200)   (454)   (297)
Other income and expenses, net    7   (59)
Interest rate contracts        
Interest expense  (17)   (8)  
Total Pretax (Losses) Gains Recognized in Earnings$ (206) $ (466) $ (355)
Location of Pretax Gains and (Losses) Recognized as Regulatory Assets or Liabilities        
Commodity contracts(a)        
Regulatory assets$ 10 $ (171) $ (502)
Interest rate contracts(b)        
Regulatory assets  18   6  
Total Pretax Gains (Losses) Recognized as Regulatory Assets or Liabilities$ 28 $ (165) $ (502)
          
(a)Reclassified to earnings to match recovery through the fuel clause.
(b)Reclassified to earnings as interest expense over the term of the related debt.
          
 
Duke Energy Progress [Member]
   
Derivative [Line Items]    
Location And Fair Value Amounts Of Derivatives Reflected In The Condensed Consolidated Balance Sheets
             
  December 31,
   2013 2012
(in millions)Asset Liability Asset Liability
Derivatives Designated as Hedging Instruments           
Commodity contracts           
Current liabilities: other$ $ 1 $ $ 1
Deferred credits and other liabilities: other        1
Total Derivatives Designated as Hedging Instruments    1     2
Derivatives Not Designated as Hedging Instruments           
Commodity contracts(a)           
Current assets: other      1  
Investments and other assets: other  2   1   1  
Current liabilities: other  2   40     85
Deferred credits and other liabilities: other  2   29     68
Interest rate contracts            
Current liabilities: other        11
Total Derivatives Not Designated as Hedging Instruments  6   70   2   164
Total Derivatives$ 6 $ 71 $ 2 $ 166
             
(a)Substantially all of these contracts are recorded as regulatory assets or liabilities.
             
 
Offsetting Assets and Liabilities
  December 31, 2013 
  Derivative Assets  Derivative Liabilities 
(in millions)Current(a) Non-Current(b)  Current(c) Non-Current(d) 
Gross amounts recognized$ 3 $ 3  $ 41 $ 30 
Gross amounts offset  (3)   (3)    (3)   (3) 
Net amount subject to master netting       38   27 
Net amounts recognized on the Consolidated Balance Sheet$ $  $ 38 $ 27 
               
  December 31, 2012 
  Derivative Assets  Derivative Liabilities 
(in millions)Current(a) Non-Current(b)  Current(c) Non-Current(d) 
Gross amounts recognized$ 1 $ 1  $ 97 $ 69 
Gross amounts offset       (2)   (7) 
Net amounts subject to master netting  1   1    95   62 
Net amounts recognized on the Consolidated Balance Sheet$ 1 $ 1  $ 95 $ 62 
               
Cash Flow Hedges-Location And Amount Of Pre-Tax (Losses) Recognized In Comprehensive Income
The following table shows the gains and losses during the year recognized on cash flow hedges and the line items on the Consolidated Statements of Operations and Comprehensive Income or Consolidated Balance Sheets in which such gains and losses are included when reclassified from AOCI.
          
  Years Ended December 31,
(in millions)2013 2012 2011
Pretax Gains (Losses) Recorded in AOCI        
Interest rate contracts(a)$ $ (7) $ (70)
Total Pretax Gains (Losses) Recorded in AOCI$ $ (7) $ (70)
Location of Pretax Gains and (Losses) Reclassified from AOCI into Earnings        
Interest rate contracts        
Interest expense$ $ (5) $ (7)
Total Pretax Gains (Losses) Reclassified from AOCI into Earnings$ $ (5) $ (7)
Location of Pretax Gains and (Losses) Reclassified from AOCI to Regulatory Assets or Liabilities(b)        
Interest rate contracts        
Regulatory assets$ $ (117) $
Total Pretax Gains (Losses) Recognized as Regulatory Assets or Liabilities$ $ (117) $
          
(a)Reclassified to earnings as interest expense over the term of the related debt.
(b)Effective with the merger, Duke Energy Progress no longer designates interest rate derivatives for regulated operations as cash flow hedges. As a result, the pretax losses on derivatives as of the date of the merger were reclassified from AOCI to Regulatory assets.
          
 
Undesignated Contracts - Location And Amount Of Pre-Tax Gains And (Losses) Recognized In Income Or As Regulatory Assets Or Liabilities
          
  Years Ended December 31,
(in millions)2013 2012 2011
Location of Pretax Gains and (Losses) Recognized in Earnings        
Commodity contracts        
Operating revenues$ 11 $ (11) $ 1
Fuel used in electric generation and purchased power  (71)   (115)   (60)
Interest rate contracts        
Interest expense  (13)   (6)  
Total Pretax (Losses) Gains Recognized in Earnings$ (73) $ (132) $ (59)
Location of Pretax Gains and (Losses) Recognized as Regulatory Assets or Liabilities        
Commodity contracts(a)        
Regulatory assets$ (6) $ (55) $ (140)
Interest rate contracts(b)        
Regulatory assets  13   6  
Total Pretax Gains (Losses) Recognized as Regulatory Assets or Liabilities$ 7 $ (49) $ (140)
          
(a)Reclassified to earnings to match recovery through the fuel clause.
(b)Reclassified to earnings as interest expense over the term of the related debt.
          
 
Duke Energy Florida [Member]
   
Derivative [Line Items]    
Location And Fair Value Amounts Of Derivatives Reflected In The Condensed Consolidated Balance Sheets
             
  December 31,
  2013 2012
(in millions)Asset Liability Asset Liability
Derivatives Designated as Hedging Instruments            
Commodity contracts           
Current liabilities: other$ $ $ $ 1
Total Derivatives Designated as Hedging Instruments        1
Derivatives Not Designated as Hedging Instruments           
Commodity contracts(a)           
Current assets: other  3   2   2  
Investments and other assets: other      7  
Current liabilities: other  9   64     146
Deferred credits and other liabilities: other  2   63     123
Total Derivatives Not Designated as Hedging Instruments  14   129   9   269
Total Derivatives$ 14 $ 129 $ 9 $ 270
             
(a)Substantially all of these contracts are recorded as regulatory assets or liabilities.
             
 
Offsetting Assets and Liabilities
  December 31, 2013 
  Derivative Assets  Derivative Liabilities 
(in millions)Current(a) Non-Current(b)  Current(c) Non-Current(d) 
Gross amounts recognized$ 12 $ 2  $ 66 $ 63 
Gross amounts offset  (10)   (2)    (15)   (7) 
Net amount subject to master netting  2      51   56 
Net amounts recognized on the Consolidated Balance Sheet$ 2 $  $ 51 $ 56 
               
  December 31, 2012 
  Derivative Assets  Derivative Liabilities 
(in millions)Current(a) Non-Current(b)  Current(c) Non-Current(d) 
Gross amounts recognized$ 2 $ 7  $ 147 $ 123 
Gross amounts offset       (20)   (29) 
Net amounts subject to master netting  2   7    127   94 
Net amounts recognized on the Consolidated Balance Sheet$ 2 $ 7  $ 127 $ 94 
               
Cash Flow Hedges-Location And Amount Of Pre-Tax (Losses) Recognized In Comprehensive Income
The following table shows the gains and losses during the year recognized on cash flow hedges and the line items on the Consolidated Statements of Operations and Comprehensive Income or Consolidated Balance Sheets in which such gains and losses are included when reclassified from AOCI.
          
  Years Ended December 31,
(in millions)2013 2012 2011
Pretax Gains (Losses) Recorded in AOCI        
Commodity contracts$ 1 $ 1 $ (3)
Interest rate contracts(a)    (2)   (35)
Total Pretax Gains (Losses) Recorded in AOCI$ 1 $ (1) $ (38)
Location of Pretax Gains and (Losses) Reclassified from AOCI into Earnings        
Interest rate contracts        
Interest expense$ $ (2) $ (1)
Total Pretax Gains (Losses) Reclassified from AOCI into Earnings$ $ (2) $ (1)
Location of Pretax Gains and (Losses) Reclassified from AOCI to Regulatory Assets(b)        
Interest rate contracts        
Regulatory assets$ $ (42) $
Total Pretax Gains (Losses) Reclassified from AOCI to Regulatory Assets$ $ (42) $
          
(a)Reclassified to earnings as interest expense over the term of the related debt.
(b)Effective with the merger, Duke Energy Florida no longer designates interest rate derivatives for regulated operations as cash flow hedges. As a result, the pretax losses on derivatives as of the date of the merger were reclassified from AOCI to Regulatory assets.
          
 
Undesignated Contracts - Location And Amount Of Pre-Tax Gains And (Losses) Recognized In Income Or As Regulatory Assets Or Liabilities
          
  Years Ended December 31,
(in millions)2013 2012 2011
Location of Pretax Gains and (Losses) Recognized in Earnings        
Commodity contracts        
Fuel used in electric generation and purchased power$ (129) $ (339) $ (237)
Interest rate contracts        
Interest expense  (5)   (2)  
Total Pretax (Losses) Gains Recognized in Earnings$ (134) $ (341) $ (237)
Location of Pretax Gains and (Losses) Recognized as Regulatory Assets or Liabilities        
Commodity contracts(a)        
Regulatory assets$ 16 $ (116) $ (362)
Interest rate contracts        
Regulatory assets  5    
Total Pretax Gains (Losses) Recognized as Regulatory Assets or Liabilities$ 21 $ (116) $ (362)
          
(a)Reclassified to earnings to match recovery through the fuel clause.
          
 
Duke Energy Ohio [Member]
   
Derivative [Line Items]    
Location And Fair Value Amounts Of Derivatives Reflected In The Condensed Consolidated Balance Sheets
             
  December 31,
  2013 2012
(in millions)Asset Liability Asset Liability
Derivatives Designated as Hedging Instruments           
Interest rate contracts           
Current assets: other$ $ $ 2 $
Total Derivatives Designated as Hedging Instruments      2  
Derivatives Not Designated as Hedging Instruments           
Commodity contracts           
Current assets: other  186   163   31   4
Investments and other assets: other  202   130   81   51
Current liabilities: other  1   36   106   132
Deferred credits and other liabilities: other  2   56     4
Interest rate contracts            
Current liabilities: other    1     1
Deferred credits and other liabilities: other    4     7
Total Derivatives Not Designated as Hedging Instruments  391   390   218   199
Total Derivatives$ 391 $ 390 $ 220 $ 199
             
 
Offsetting Assets and Liabilities
  December 31, 2013 
  Derivative Assets  Derivative Liabilities 
(in millions)Current(a) Non-Current(b)  Current(c) Non-Current(d) 
Gross amounts recognized$ 186 $ 205  $ 199 $ 186 
Gross amounts offset  (165)   (132)    (173)   (143) 
Net amount subject to master netting  21   73    26   43 
Amounts not subject to master netting       1   4 
Net amounts recognized on the Consolidated Balance Sheet$ 21 $ 73  $ 27 $ 47 
               
  December 31, 2012 
  Derivative Assets  Derivative Liabilities 
(in millions)Current(a) Non-Current(b)  Current(c) Non-Current(d) 
Gross amounts recognized$ 137 $ 81  $ 136 $ 55 
Gross amounts offset  (110)   (51)    (125)   (51) 
Net amounts subject to master netting  27   30    11   4 
Amounts not subject to master netting  2      1   7 
Net amounts recognized on the Consolidated Balance Sheet$ 29 $ 30  $ 12 $ 11 
               
Undesignated Contracts - Location And Amount Of Pre-Tax Gains And (Losses) Recognized In Income Or As Regulatory Assets Or Liabilities
          
  Years Ended December 31,
(in millions)2013 2012 2011
Location of Pretax Gains and (Losses) Recognized in Earnings        
Commodity contracts        
Revenue: Nonregulated electric, natural gas and other$ 44 $ 76 $ (26)
Fuel used in electric generation and purchased power - nonregulated  (100)   2   (1)
Interest rate contracts        
Interest expense  (1)   (1)   (1)
Total Pretax (Losses) Gains Recognized in Earnings$ (57) $ 77 $ (28)
Location of Pretax Gains and (Losses) Recognized as Regulatory Assets or Liabilities        
Commodity contracts        
Regulatory assets$ $ 2 $ 1
Regulatory liabilities    (1)  
Interest rate contracts        
Regulatory assets  4     (4)
Total Pretax Gains (Losses) Recognized as Regulatory Assets or Liabilities$ 4 $ 1 $ (3)
          
 
Duke Energy Indiana [Member]
   
Derivative [Line Items]    
Location And Fair Value Amounts Of Derivatives Reflected In The Condensed Consolidated Balance Sheets
             
             
  December 31,
  2013 2012
(in millions)Asset Liability Asset Liability
Derivatives Not Designated as Hedging Instruments           
Commodity contracts           
Current assets: other$ 12 $ $ 10 $
Interest rate contracts            
Current liabilities: other        63
Total Derivatives Not Designated as Hedging Instruments  12     10   63
Total Derivatives$ 12 $ $ 10 $ 63
             
 
Offsetting Assets and Liabilities
  December 31, 2013 
  Derivative Assets  Derivative Liabilities 
(in millions)Current(a) Non-Current(b)  Current(c) Non-Current(d) 
Gross amounts recognized$ 12 $  $ $ 
Gross amounts offset  (1)        
Net amount subject to master netting  11        
Net amounts recognized on the Consolidated Balance Sheet$ 11 $  $ $ 
               
  December 31, 2012 
  Derivative Assets  Derivative Liabilities 
(in millions)Current(a) Non-Current(b)  Current(c) Non-Current(d) 
Amounts not subject to master netting$ 10 $  $ 63 $ 
Net amounts recognized on the Consolidated Balance Sheet$ 10 $  $ 63 $ 
               
Cash Flow Hedges-Location And Amount Of Pre-Tax (Losses) Recognized In Comprehensive Income
The following table shows the gains and losses during the year recognized on cash flow hedges and the line items on the Consolidated Statements of Operations and Comprehensive Income where such gains and losses are included when reclassified from AOCI.
          
  Years Ended December 31,
(in millions)2013 2012 2011
Location of Pretax Gains and (Losses) Reclassified from AOCI into Earnings        
Interest rate contracts        
Interest expense$ 3 $ 3 $ 2
Total Pretax Gains (Losses) Reclassified from AOCI into Earnings$ 3 $ 3 $ 2
          
 
Undesignated Contracts - Location And Amount Of Pre-Tax Gains And (Losses) Recognized In Income Or As Regulatory Assets Or Liabilities
          
  Years Ended December 31,
(in millions)2013 2012 2011
Location of Pretax Gains and (Losses) Recognized in Earnings        
Commodity contracts        
Revenue, regulated electric$ 1 $ $
Total Pretax (Losses) Gains Recognized in Earnings$ 1 $ $
Location of Pretax Gains and (Losses) Recognized as Regulatory Assets or Liabilities        
Commodity contracts(a)        
Regulatory assets$ $ 2 $ (2)
Regulatory liabilities  16   35   17
Interest rate contracts(b)        
Regulatory assets  34   4   (67)
Total Pretax Gains (Losses) Recognized as Regulatory Assets or Liabilities$ 50 $ 41 $ (52)
          
(a)Reclassified to earnings to match recovery through the fuel clause.
(b)Reclassified to earnings as interest expense over the term of the related debt.