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Comprehensive Income (Tables)
 12 Months Ended
Dec. 31, 2013
Changes in Accumulated Other Comprehensive Income by Component
Changes in Accumulated Other Comprehensive Income (Loss) by Component
For the Year Ended December 31, 2013
 
   Cash Flow Hedges    Pension and OPEB   
      Interest Rate Securities Amortization Changes   
      and Foreign Available of Deferred  in Funded   
   Commodity Currency for Sale Costs  Status Total
   (in millions)
Balance in AOCI as of December 31, 2012$ (8) $ (30) $ 4 $ 112 $ (415) $ (337)
Change in Fair Value Recognized in AOCI  10   2   3   -   177   192
Amounts Reclassified from AOCI  (2)   5   -   22   -   25
Net Current Period Other                 
  Comprehensive Income  8   7   3   22   177   217
Pension and OPEB Adjustment Related to                  
  Mitchell Plant  -   -   -   -   5   5
Balance in AOCI as of December 31, 2013$ - $ (23) $ 7 $ 134 $ (233) $ (115)
Reclassifications from Accumulated Other Comprehensive Income
 Reclassifications from Accumulated Other Comprehensive Income (Loss)
 For the Year Ended December 31, 2013
       
     Amount of
     (Gain) Loss
     Reclassified
     from AOCI
 Gains and Losses on Cash Flow Hedges (in millions)
 Commodity:   
   Vertically Integrated Utilities Revenues $ (1)
   Generation & Marketing Revenues   (10)
   Purchased Electricity for Resale   8
   Property, Plant and Equipment   -
   Regulatory Assets/(Liabilities), Net (a)   -
 Subtotal - Commodity   (3)
       
 Interest Rate and Foreign Currency:   
   Interest Expense   7
 Subtotal - Interest Rate and Foreign Currency   7
       
 Reclassifications from AOCI, before Income Tax (Expense) Credit   4
 Income Tax (Expense) Credit   1
 Reclassifications from AOCI, Net of Income Tax (Expense) Credit   3
     
 Gains and Losses on Securities Available for Sale   
 Interest Income   -
 Interest Expense   -
 Reclassifications from AOCI, before Income Tax (Expense) Credit   -
 Income Tax (Expense) Credit   -
 Reclassifications from AOCI, Net of Income Tax (Expense) Credit   -
      
 Pension and OPEB   
 Amortization of Prior Service Cost (Credit)   (21)
 Amortization of Actuarial (Gains)/Losses   55
 Reclassifications from AOCI, before Income Tax (Expense) Credit   34
 Income Tax (Expense) Credit   12
 Reclassifications from AOCI, Net of Income Tax (Expense) Credit   22
       
 Total Reclassifications from AOCI, Net of Income Tax (Expense) Credit $ 25

(a)        Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.
Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
 Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
 Year Ended December 31, 2012
             
        Interest Rate   
        and Foreign    
     Commodity Currency Total
             
     (in millions)
 Balance in AOCI as of December 31, 2011 $ (3) $ (20) $ (23)
 Changes in Fair Value Recognized in AOCI   (15)   (14)   (29)
 Amount of (Gain) or Loss Reclassified from AOCI         
  to Statement of Income/within Balance Sheet:         
   Vertically Integrated Utilities Revenues   -   -   -
   Generation & Marketing Revenues   (5)   -   (5)
   Purchased Electricity for Resale   13   -   13
   Other Operation Expense   -   -   -
   Maintenance Expense   -   -   -
   Interest Expense   -   4   4
   Property, Plant and Equipment   -   -   -
   Regulatory Assets (a)   2   -   2
 Balance in AOCI as of December 31, 2012 $ (8) $ (30) $ (38)
             
 Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
 Year Ended December 31, 2011
             
        Interest Rate   
        and Foreign    
     Commodity Currency Total
     (in millions)
 Balance in AOCI as of December 31, 2010 $ 7 $ 4 $ 11
 Changes in Fair Value Recognized in AOCI   (5)   (28)   (33)
 Amount of (Gain) or Loss Reclassified from AOCI         
  to Statement of Income/within Balance Sheet:         
   Vertically Integrated Utilities Revenues   1   -   1
   Generation & Marketing Revenues   (3)   -   (3)
   Purchased Electricity for Resale   (2)   -   (2)
   Other Operation Expense   (1)   -   (1)
   Maintenance Expense   (1)   -   (1)
   Interest Expense   -   4   4
   Property, Plant and Equipment   (1)   -   (1)
   Regulatory Assets (a)   2   -   2
 Balance in AOCI as of December 31, 2011 $ (3) $ (20) $ (23)

(a)  Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.
Total Accumulated Other Comprehensive Income (Loss) Activity for Securities Available for Sale
 Total Accumulated Other Comprehensive Income (Loss) Activity for Securities Available for Sale
 Year Ended December 31, 2012
       
     (in millions)
 Balance in AOCI as of December 31, 2011 $ 2
 Changes in Fair Value Recognized in AOCI   2
 Amount of (Gain) or Loss Reclassified from AOCI to Statement of Income:   
   Interest Income   -
 Balance in AOCI as of December 31, 2012 $ 4
Appalachian Power Co [Member]
  
Changes in Accumulated Other Comprehensive Income by Component
APCo
 Changes in Accumulated Other Comprehensive Income (Loss) by Component
 For the Year Ended December 31, 2013
                
    Cash Flow Hedges Pension and OPEB   
       Interest Rate Amortization Changes   
       and Foreign of Deferred in Funded   
    Commodity Currency Costs Status Total
    (in thousands)
 Balance in AOCI as of December 31, 2012$ (644) $ 2,077 $ 19,118 $ (50,449) $ (29,898)
 Change in Fair Value Recognized in AOCI  768   -   -   29,665   30,433
 Amounts Reclassified from AOCI  (30)   1,013   1,433   -   2,416
 Net Current Period Other              
   Comprehensive Income  738   1,013   1,433   29,665   32,849
 Balance in AOCI as of December 31, 2013$ 94 $ 3,090 $ 20,551 $ (20,784) $ 2,951
Reclassifications from Accumulated Other Comprehensive Income
APCo   
 Reclassifications from Accumulated Other Comprehensive Income (Loss)
 For the Year Ended December 31, 2013
     
     Amount of
     (Gain) Loss
      Reclassified
     from AOCI
 Gains and Losses on Cash Flow Hedges (in thousands)
 Commodity:   
   Electric Generation, Transmission and Distribution Revenues $ (80)
   Purchased Electricity for Resale   90
   Other Operation Expense   (37)
   Maintenance Expense   (31)
   Property, Plant and Equipment   (35)
   Regulatory Assets/(Liabilities), Net (a)   47
 Subtotal - Commodity   (46)
       
 Interest Rate and Foreign Currency:   
   Interest Expense   1,559
 Subtotal - Interest Rate and Foreign Currency   1,559
       
 Reclassifications from AOCI, before Income Tax (Expense) Credit   1,513
 Income Tax (Expense) Credit   530
 Reclassifications from AOCI, Net of Income Tax (Expense) Credit   983
     
 Pension and OPEB   
 Amortization of Prior Service Cost (Credit)   (5,129)
 Amortization of Actuarial (Gains)/Losses   7,334
 Change in Funded Status   -
 Reclassifications from AOCI, before Income Tax (Expense) Credit   2,205
 Income Tax (Expense) Credit   772
 Reclassifications from AOCI, Net of Income Tax (Expense) Credit   1,433
       
 Total Reclassifications from AOCI, Net of Income Tax (Expense) Credit $ 2,416

(a)       Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.
Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
 Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
  Year Ended December 31, 2012
  
 Commodity APCo I&M OPCo PSO SWEPCo
   (in thousands)
 Balance in AOCI as of December 31, 2011 $ (1,309) $ (819) $ (1,748) $ (69) $ (62)
 Changes in Fair Value Recognized in AOCI   (1,310)   (987)   (2,002)   104   100
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   (16)   (43)   (109)   -   -
   Purchased Electricity for Resale   440   1,151   3,002   -   -
   Other Operation Expense   (25)   (14)   (35)   (14)   (11)
   Maintenance Expense   -   (2)   (5)   1   -
   Property, Plant and Equipment   (14)   (10)   (15)   (1)   (5)
   Regulatory Assets (a)   1,590   278   -   -   -
 Balance in AOCI as of December 31, 2012 $ (644) $ (446) $ (912) $ 21 $ 22
                    
 Interest Rate and               
 Foreign Currency APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2011 $ 1,024 $ (14,465) $ 9,454 $ 7,218 $ (15,462)
 Changes in Fair Value Recognized in AOCI   -   (5,777)   -   -   (2,778)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,053   595   (1,363)   (758)   2,669
 Balance in AOCI as of December 31, 2012 $ 2,077 $ (19,647) $ 8,095 $ 6,460 $ (15,571)
                    
 Total – Cash Flow Hedges APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2011 $ (285) $ (15,284) $ 7,706 $ 7,149 $ (15,524)
 Changes in Fair Value Recognized in AOCI   (1,310)   (6,764)   (2,002)   104   (2,678)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   (16)   (43)   (109)   -   -
   Purchased Electricity for Resale   440   1,151   3,002   -   -
   Other Operation Expense   (25)   (14)   (35)   (14)   (11)
   Maintenance Expense   -   (2)   (5)   1   -
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,053   595   (1,363)   (758)   2,669
   Property, Plant and Equipment   (14)   (10)   (15)   (1)   (5)
   Regulatory Assets (a)   1,590   278   -   -   -
 Balance in AOCI as of December 31, 2012 $ 1,433 $ (20,093) $ 7,183 $ 6,481 $ (15,549)

 Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
  Year Ended December 31, 2011
  
 Commodity APCo I&M OPCo PSO SWEPCo
   (in thousands)
 Balance in AOCI as of December 31, 2010 $ (273) $ (178) $ (364) $ 88 $ 82
 Changes in Fair Value Recognized in AOCI   (2,077)   (1,294)   (2,748)   108   102
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   249   544   1,457   -   -
   Purchased Electricity for Resale   62   79   425   -   -
   Other Operation Expense   (95)   (71)   (160)   (93)   (93)
   Maintenance Expense   (169)   (64)   (141)   (62)   (65)
   Property, Plant and Equipment   (175)   (90)   (217)   (110)   (88)
   Regulatory Assets (a)   1,169   255   -   -   -
 Balance in AOCI as of December 31, 2011 $ (1,309) $ (819) $ (1,748) $ (69) $ (62)
                    
 Interest Rate and               
 Foreign Currency APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2010 $ 217 $ (8,507) $ 10,813 $ 8,406 $ (4,272)
 Changes in Fair Value Recognized in AOCI   (373)   (6,913)   -   (475)   (12,438)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,180   955   (1,363)   (713)   1,248
 Balance in AOCI as of December 31, 2011 $ 1,024 $ (14,465) $ 9,454 $ 7,218 $ (15,462)
                    
 Total – Cash Flow Hedges APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2010 $ (56) $ (8,685) $ 10,449 $ 8,494 $ (4,190)
 Changes in Fair Value Recognized in AOCI   (2,450)   (8,207)   (2,748)   (367)   (12,336)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   249   544   1,457   -   -
   Purchased Electricity for Resale   62   79   425   -   -
   Other Operation Expense   (95)   (71)   (160)   (93)   (93)
   Maintenance Expense   (169)   (64)   (141)   (62)   (65)
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,180   955   (1,363)   (713)   1,248
   Property, Plant and Equipment   (175)   (90)   (217)   (110)   (88)
   Regulatory Assets (a)   1,169   255   -   -   -
 Balance in AOCI as of December 31, 2011 $ (285) $ (15,284) $ 7,706 $ 7,149 $ (15,524)

(a)       Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.
Indiana Michigan Power Co [Member]
  
Changes in Accumulated Other Comprehensive Income by Component
I&M
 Changes in Accumulated Other Comprehensive Income (Loss) by Component
 For the Year Ended December 31, 2013
                
    Cash Flow Hedges Pension and OPEB   
       Interest Rate Amortization Changes   
       and Foreign of Deferred in Funded   
    Commodity Currency Costs Status Total
    (in thousands)
 Balance in AOCI as of December 31, 2012$ (446) $ (19,647) $ 4,201 $ (12,991) $ (28,883)
 Change in Fair Value Recognized in AOCI  477   2,249   -   8,511   11,237
 Amounts Reclassified from AOCI  15   1,422   700   -   2,137
 Net Current Period Other              
   Comprehensive Income  492   3,671   700   8,511   13,374
 Balance in AOCI as of December 31, 2013$ 46 $ (15,976) $ 4,901 $ (4,480) $ (15,509)
Reclassifications from Accumulated Other Comprehensive Income
I&M   
 Reclassifications from Accumulated Other Comprehensive Income (Loss)
 For the Year Ended December 31, 2013
     
     Amount of
     (Gain) Loss
      Reclassified
     from AOCI
 Gains and Losses on Cash Flow Hedges (in thousands)
 Commodity:   
   Electric Generation, Transmission and Distribution Revenues $ (155)
   Purchased Electricity for Resale   219
   Other Operation Expense   (23)
   Maintenance Expense   (14)
   Property, Plant and Equipment   (20)
   Regulatory Assets/(Liabilities), Net (a)   16
 Subtotal - Commodity   23
       
 Interest Rate and Foreign Currency:   
   Interest Expense   2,188
 Subtotal - Interest Rate and Foreign Currency   2,188
       
 Reclassifications from AOCI, before Income Tax (Expense) Credit   2,211
 Income Tax (Expense) Credit   774
 Reclassifications from AOCI, Net of Income Tax (Expense) Credit   1,437
     
 Pension and OPEB   
 Amortization of Prior Service Cost (Credit)   (794)
 Amortization of Actuarial (Gains)/Losses   1,872
 Change in Funded Status   -
 Reclassifications from AOCI, before Income Tax (Expense) Credit   1,078
 Income Tax (Expense) Credit   378
 Reclassifications from AOCI, Net of Income Tax (Expense) Credit   700
       
 Total Reclassifications from AOCI, Net of Income Tax (Expense) Credit $ 2,137

(a)       Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.
Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
 Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
  Year Ended December 31, 2012
  
 Commodity APCo I&M OPCo PSO SWEPCo
   (in thousands)
 Balance in AOCI as of December 31, 2011 $ (1,309) $ (819) $ (1,748) $ (69) $ (62)
 Changes in Fair Value Recognized in AOCI   (1,310)   (987)   (2,002)   104   100
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   (16)   (43)   (109)   -   -
   Purchased Electricity for Resale   440   1,151   3,002   -   -
   Other Operation Expense   (25)   (14)   (35)   (14)   (11)
   Maintenance Expense   -   (2)   (5)   1   -
   Property, Plant and Equipment   (14)   (10)   (15)   (1)   (5)
   Regulatory Assets (a)   1,590   278   -   -   -
 Balance in AOCI as of December 31, 2012 $ (644) $ (446) $ (912) $ 21 $ 22
                    
 Interest Rate and               
 Foreign Currency APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2011 $ 1,024 $ (14,465) $ 9,454 $ 7,218 $ (15,462)
 Changes in Fair Value Recognized in AOCI   -   (5,777)   -   -   (2,778)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,053   595   (1,363)   (758)   2,669
 Balance in AOCI as of December 31, 2012 $ 2,077 $ (19,647) $ 8,095 $ 6,460 $ (15,571)
                    
 Total – Cash Flow Hedges APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2011 $ (285) $ (15,284) $ 7,706 $ 7,149 $ (15,524)
 Changes in Fair Value Recognized in AOCI   (1,310)   (6,764)   (2,002)   104   (2,678)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   (16)   (43)   (109)   -   -
   Purchased Electricity for Resale   440   1,151   3,002   -   -
   Other Operation Expense   (25)   (14)   (35)   (14)   (11)
   Maintenance Expense   -   (2)   (5)   1   -
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,053   595   (1,363)   (758)   2,669
   Property, Plant and Equipment   (14)   (10)   (15)   (1)   (5)
   Regulatory Assets (a)   1,590   278   -   -   -
 Balance in AOCI as of December 31, 2012 $ 1,433 $ (20,093) $ 7,183 $ 6,481 $ (15,549)

 Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
  Year Ended December 31, 2011
  
 Commodity APCo I&M OPCo PSO SWEPCo
   (in thousands)
 Balance in AOCI as of December 31, 2010 $ (273) $ (178) $ (364) $ 88 $ 82
 Changes in Fair Value Recognized in AOCI   (2,077)   (1,294)   (2,748)   108   102
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   249   544   1,457   -   -
   Purchased Electricity for Resale   62   79   425   -   -
   Other Operation Expense   (95)   (71)   (160)   (93)   (93)
   Maintenance Expense   (169)   (64)   (141)   (62)   (65)
   Property, Plant and Equipment   (175)   (90)   (217)   (110)   (88)
   Regulatory Assets (a)   1,169   255   -   -   -
 Balance in AOCI as of December 31, 2011 $ (1,309) $ (819) $ (1,748) $ (69) $ (62)
                    
 Interest Rate and               
 Foreign Currency APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2010 $ 217 $ (8,507) $ 10,813 $ 8,406 $ (4,272)
 Changes in Fair Value Recognized in AOCI   (373)   (6,913)   -   (475)   (12,438)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,180   955   (1,363)   (713)   1,248
 Balance in AOCI as of December 31, 2011 $ 1,024 $ (14,465) $ 9,454 $ 7,218 $ (15,462)
                    
 Total – Cash Flow Hedges APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2010 $ (56) $ (8,685) $ 10,449 $ 8,494 $ (4,190)
 Changes in Fair Value Recognized in AOCI   (2,450)   (8,207)   (2,748)   (367)   (12,336)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   249   544   1,457   -   -
   Purchased Electricity for Resale   62   79   425   -   -
   Other Operation Expense   (95)   (71)   (160)   (93)   (93)
   Maintenance Expense   (169)   (64)   (141)   (62)   (65)
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,180   955   (1,363)   (713)   1,248
   Property, Plant and Equipment   (175)   (90)   (217)   (110)   (88)
   Regulatory Assets (a)   1,169   255   -   -   -
 Balance in AOCI as of December 31, 2011 $ (285) $ (15,284) $ 7,706 $ 7,149 $ (15,524)

(a)       Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.
Ohio Power Co [Member]
  
Changes in Accumulated Other Comprehensive Income by Component
OPCo
 Changes in Accumulated Other Comprehensive Income (Loss) by Component
 For the Year Ended December 31, 2013
                
    Cash Flow Hedges Pension and OPEB   
       Interest Rate Amortization Changes   
       and Foreign of Deferred in Funded   
    Commodity Currency Costs Status Total
    (in thousands)
 Balance in AOCI as of December 31, 2012$ (912) $ 8,095 $ 45,938 $ (218,846) $ (165,725)
 Change in Fair Value Recognized in AOCI  982   -   -   65,418   66,400
 Amounts Reclassified from AOCI  22   (1,359)   12,509   -   11,172
 Net Current Period Other              
   Comprehensive Income  1,004   (1,359)   12,509   65,418   77,572
 Distribution of Cook Coal Terminal to Parent  -   -   -   19,652   19,652
 Distribution of OPCo Generation to Parent  13   238   -   75,329   75,580
 Balance in AOCI as of December 31, 2013$ 105 $ 6,974 $ 58,447 $ (58,447) $ 7,079
Reclassifications from Accumulated Other Comprehensive Income
OPCo   
 Reclassifications from Accumulated Other Comprehensive Income (Loss)
 For the Year Ended December 31, 2013
     
     Amount of
     (Gain) Loss
      Reclassified
     from AOCI
 Gains and Losses on Cash Flow Hedges (in thousands)
 Commodity:   
   Electric Generation, Transmission and Distribution Revenues $ (415)
   Purchased Electricity for Resale   576
   Other Operation Expense   (56)
   Maintenance Expense   (26)
   Property, Plant and Equipment   (45)
   Regulatory Assets/(Liabilities), Net (a)   -
 Subtotal - Commodity   34
       
 Interest Rate and Foreign Currency:   
   Depreciation and Amortization Expense   7
   Interest Expense   (2,098)
 Subtotal - Interest Rate and Foreign Currency   (2,091)
       
 Reclassifications from AOCI, before Income Tax (Expense) Credit   (2,057)
 Income Tax (Expense) Credit   (720)
 Reclassifications from AOCI, Net of Income Tax (Expense) Credit   (1,337)
     
 Pension and OPEB   
 Amortization of Prior Service Cost (Credit)   (5,840)
 Amortization of Actuarial (Gains)/Losses   25,085
 Change in Funded Status   -
 Reclassifications from AOCI, before Income Tax (Expense) Credit   19,245
 Income Tax (Expense) Credit   6,736
 Reclassifications from AOCI, Net of Income Tax (Expense) Credit   12,509
       
 Total Reclassifications from AOCI, Net of Income Tax (Expense) Credit $ 11,172

(a)       Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.
Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
 Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
  Year Ended December 31, 2012
  
 Commodity APCo I&M OPCo PSO SWEPCo
   (in thousands)
 Balance in AOCI as of December 31, 2011 $ (1,309) $ (819) $ (1,748) $ (69) $ (62)
 Changes in Fair Value Recognized in AOCI   (1,310)   (987)   (2,002)   104   100
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   (16)   (43)   (109)   -   -
   Purchased Electricity for Resale   440   1,151   3,002   -   -
   Other Operation Expense   (25)   (14)   (35)   (14)   (11)
   Maintenance Expense   -   (2)   (5)   1   -
   Property, Plant and Equipment   (14)   (10)   (15)   (1)   (5)
   Regulatory Assets (a)   1,590   278   -   -   -
 Balance in AOCI as of December 31, 2012 $ (644) $ (446) $ (912) $ 21 $ 22
                    
 Interest Rate and               
 Foreign Currency APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2011 $ 1,024 $ (14,465) $ 9,454 $ 7,218 $ (15,462)
 Changes in Fair Value Recognized in AOCI   -   (5,777)   -   -   (2,778)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,053   595   (1,363)   (758)   2,669
 Balance in AOCI as of December 31, 2012 $ 2,077 $ (19,647) $ 8,095 $ 6,460 $ (15,571)
                    
 Total – Cash Flow Hedges APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2011 $ (285) $ (15,284) $ 7,706 $ 7,149 $ (15,524)
 Changes in Fair Value Recognized in AOCI   (1,310)   (6,764)   (2,002)   104   (2,678)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   (16)   (43)   (109)   -   -
   Purchased Electricity for Resale   440   1,151   3,002   -   -
   Other Operation Expense   (25)   (14)   (35)   (14)   (11)
   Maintenance Expense   -   (2)   (5)   1   -
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,053   595   (1,363)   (758)   2,669
   Property, Plant and Equipment   (14)   (10)   (15)   (1)   (5)
   Regulatory Assets (a)   1,590   278   -   -   -
 Balance in AOCI as of December 31, 2012 $ 1,433 $ (20,093) $ 7,183 $ 6,481 $ (15,549)

 Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
  Year Ended December 31, 2011
  
 Commodity APCo I&M OPCo PSO SWEPCo
   (in thousands)
 Balance in AOCI as of December 31, 2010 $ (273) $ (178) $ (364) $ 88 $ 82
 Changes in Fair Value Recognized in AOCI   (2,077)   (1,294)   (2,748)   108   102
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   249   544   1,457   -   -
   Purchased Electricity for Resale   62   79   425   -   -
   Other Operation Expense   (95)   (71)   (160)   (93)   (93)
   Maintenance Expense   (169)   (64)   (141)   (62)   (65)
   Property, Plant and Equipment   (175)   (90)   (217)   (110)   (88)
   Regulatory Assets (a)   1,169   255   -   -   -
 Balance in AOCI as of December 31, 2011 $ (1,309) $ (819) $ (1,748) $ (69) $ (62)
                    
 Interest Rate and               
 Foreign Currency APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2010 $ 217 $ (8,507) $ 10,813 $ 8,406 $ (4,272)
 Changes in Fair Value Recognized in AOCI   (373)   (6,913)   -   (475)   (12,438)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,180   955   (1,363)   (713)   1,248
 Balance in AOCI as of December 31, 2011 $ 1,024 $ (14,465) $ 9,454 $ 7,218 $ (15,462)
                    
 Total – Cash Flow Hedges APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2010 $ (56) $ (8,685) $ 10,449 $ 8,494 $ (4,190)
 Changes in Fair Value Recognized in AOCI   (2,450)   (8,207)   (2,748)   (367)   (12,336)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   249   544   1,457   -   -
   Purchased Electricity for Resale   62   79   425   -   -
   Other Operation Expense   (95)   (71)   (160)   (93)   (93)
   Maintenance Expense   (169)   (64)   (141)   (62)   (65)
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,180   955   (1,363)   (713)   1,248
   Property, Plant and Equipment   (175)   (90)   (217)   (110)   (88)
   Regulatory Assets (a)   1,169   255   -   -   -
 Balance in AOCI as of December 31, 2011 $ (285) $ (15,284) $ 7,706 $ 7,149 $ (15,524)

(a)       Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.
Public Service Co of Oklahoma [Member]
  
Changes in Accumulated Other Comprehensive Income by Component
PSO
 Changes in Accumulated Other Comprehensive Income (Loss) by Component
 For the Year Ended December 31, 2013
          
    Cash Flow Hedges   
       Interest Rate and   
    Commodity Foreign Currency Total
    (in thousands)
 Balance in AOCI as of December 31, 2012$ 21 $ 6,460 $ 6,481
 Change in Fair Value Recognized in AOCI  68   -   68
 Amounts Reclassified from AOCI  (32)   (759)   (791)
 Net Current Period Other        
   Comprehensive Income  36   (759)   (723)
 Balance in AOCI as of December 31, 2013$ 57 $ 5,701 $ 5,758
Reclassifications from Accumulated Other Comprehensive Income
PSO   
 Reclassifications from Accumulated Other Comprehensive Income (Loss)
 For the Year Ended December 31, 2013
     
     Amount of
     (Gain) Loss
      Reclassified
     from AOCI
 Gains and Losses on Cash Flow Hedges (in thousands)
 Commodity:   
   Electric Generation, Transmission and Distribution Revenues $ -
   Purchased Electricity for Resale   -
   Other Operation Expense   (25)
   Maintenance Expense   (10)
   Property, Plant and Equipment   (15)
   Regulatory Assets/(Liabilities), Net (a)   -
 Subtotal - Commodity   (50)
       
 Interest Rate and Foreign Currency:   
   Interest Expense   (1,167)
 Subtotal - Interest Rate and Foreign Currency   (1,167)
       
 Reclassifications from AOCI, before Income Tax (Expense) Credit   (1,217)
 Income Tax (Expense) Credit   (426)
 Total Reclassifications from AOCI, Net of Income Tax (Expense) Credit   (791)

(a)       Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.
Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
 Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
  Year Ended December 31, 2012
  
 Commodity APCo I&M OPCo PSO SWEPCo
   (in thousands)
 Balance in AOCI as of December 31, 2011 $ (1,309) $ (819) $ (1,748) $ (69) $ (62)
 Changes in Fair Value Recognized in AOCI   (1,310)   (987)   (2,002)   104   100
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   (16)   (43)   (109)   -   -
   Purchased Electricity for Resale   440   1,151   3,002   -   -
   Other Operation Expense   (25)   (14)   (35)   (14)   (11)
   Maintenance Expense   -   (2)   (5)   1   -
   Property, Plant and Equipment   (14)   (10)   (15)   (1)   (5)
   Regulatory Assets (a)   1,590   278   -   -   -
 Balance in AOCI as of December 31, 2012 $ (644) $ (446) $ (912) $ 21 $ 22
                    
 Interest Rate and               
 Foreign Currency APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2011 $ 1,024 $ (14,465) $ 9,454 $ 7,218 $ (15,462)
 Changes in Fair Value Recognized in AOCI   -   (5,777)   -   -   (2,778)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,053   595   (1,363)   (758)   2,669
 Balance in AOCI as of December 31, 2012 $ 2,077 $ (19,647) $ 8,095 $ 6,460 $ (15,571)
                    
 Total – Cash Flow Hedges APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2011 $ (285) $ (15,284) $ 7,706 $ 7,149 $ (15,524)
 Changes in Fair Value Recognized in AOCI   (1,310)   (6,764)   (2,002)   104   (2,678)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   (16)   (43)   (109)   -   -
   Purchased Electricity for Resale   440   1,151   3,002   -   -
   Other Operation Expense   (25)   (14)   (35)   (14)   (11)
   Maintenance Expense   -   (2)   (5)   1   -
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,053   595   (1,363)   (758)   2,669
   Property, Plant and Equipment   (14)   (10)   (15)   (1)   (5)
   Regulatory Assets (a)   1,590   278   -   -   -
 Balance in AOCI as of December 31, 2012 $ 1,433 $ (20,093) $ 7,183 $ 6,481 $ (15,549)

 Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
  Year Ended December 31, 2011
  
 Commodity APCo I&M OPCo PSO SWEPCo
   (in thousands)
 Balance in AOCI as of December 31, 2010 $ (273) $ (178) $ (364) $ 88 $ 82
 Changes in Fair Value Recognized in AOCI   (2,077)   (1,294)   (2,748)   108   102
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   249   544   1,457   -   -
   Purchased Electricity for Resale   62   79   425   -   -
   Other Operation Expense   (95)   (71)   (160)   (93)   (93)
   Maintenance Expense   (169)   (64)   (141)   (62)   (65)
   Property, Plant and Equipment   (175)   (90)   (217)   (110)   (88)
   Regulatory Assets (a)   1,169   255   -   -   -
 Balance in AOCI as of December 31, 2011 $ (1,309) $ (819) $ (1,748) $ (69) $ (62)
                    
 Interest Rate and               
 Foreign Currency APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2010 $ 217 $ (8,507) $ 10,813 $ 8,406 $ (4,272)
 Changes in Fair Value Recognized in AOCI   (373)   (6,913)   -   (475)   (12,438)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,180   955   (1,363)   (713)   1,248
 Balance in AOCI as of December 31, 2011 $ 1,024 $ (14,465) $ 9,454 $ 7,218 $ (15,462)
                    
 Total – Cash Flow Hedges APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2010 $ (56) $ (8,685) $ 10,449 $ 8,494 $ (4,190)
 Changes in Fair Value Recognized in AOCI   (2,450)   (8,207)   (2,748)   (367)   (12,336)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   249   544   1,457   -   -
   Purchased Electricity for Resale   62   79   425   -   -
   Other Operation Expense   (95)   (71)   (160)   (93)   (93)
   Maintenance Expense   (169)   (64)   (141)   (62)   (65)
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,180   955   (1,363)   (713)   1,248
   Property, Plant and Equipment   (175)   (90)   (217)   (110)   (88)
   Regulatory Assets (a)   1,169   255   -   -   -
 Balance in AOCI as of December 31, 2011 $ (285) $ (15,284) $ 7,706 $ 7,149 $ (15,524)

(a)       Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.
Southwestern Electric Power Co [Member]
  
Changes in Accumulated Other Comprehensive Income by Component
SWEPCo
 Changes in Accumulated Other Comprehensive Income (Loss) by Component
 For the Year Ended December 31, 2013
                
    Cash Flow Hedges Pension and OPEB   
       Interest Rate Amortization  Changes   
       and Foreign of Deferred in Funded   
    Commodity Currency Costs Status Total
    (in thousands)
 Balance in AOCI as of December 31, 2012$ 22 $ (15,571) $ 4,778 $ (7,089) $ (17,860)
 Change in Fair Value Recognized in AOCI  83   -   -   7,360   7,443
 Amounts Reclassified from AOCI  (39)   2,267   (255)   -   1,973
 Net Current Period Other              
   Comprehensive Income  44   2,267   (255)   7,360   9,416
 Balance in AOCI as of December 31, 2013$ 66 $ (13,304) $ 4,523 $ 271 $ (8,444)
Reclassifications from Accumulated Other Comprehensive Income
SWEPCo   
 Reclassifications from Accumulated Other Comprehensive Income (Loss)
 For the Year Ended December 31, 2013
     
     Amount of
     (Gain) Loss
      Reclassified
     from AOCI
 Gains and Losses on Cash Flow Hedges (in thousands)
 Commodity:   
   Electric Generation, Transmission and Distribution Revenues $ -
   Purchased Electricity for Resale   -
   Other Operation Expense   (29)
   Maintenance Expense   (15)
   Property, Plant and Equipment   (17)
   Regulatory Assets/(Liabilities), Net (a)   -
 Subtotal - Commodity   (61)
       
 Interest Rate and Foreign Currency:   
   Interest Expense   3,488
 Subtotal - Interest Rate and Foreign Currency   3,488
       
 Reclassifications from AOCI, before Income Tax (Expense) Credit   3,427
 Income Tax (Expense) Credit   1,199
 Reclassifications from AOCI, Net of Income Tax (Expense) Credit   2,228
     
 Pension and OPEB   
 Amortization of Prior Service Cost (Credit)   (1,785)
 Amortization of Actuarial (Gains)/Losses   1,393
 Change in Funded Status   -
 Reclassifications from AOCI, before Income Tax (Expense) Credit   (392)
 Income Tax (Expense) Credit   (137)
 Reclassifications from AOCI, Net of Income Tax (Expense) Credit   (255)
       
 Total Reclassifications from AOCI, Net of Income Tax (Expense) Credit $ 1,973

(a)       Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.
Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
 Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
  Year Ended December 31, 2012
  
 Commodity APCo I&M OPCo PSO SWEPCo
   (in thousands)
 Balance in AOCI as of December 31, 2011 $ (1,309) $ (819) $ (1,748) $ (69) $ (62)
 Changes in Fair Value Recognized in AOCI   (1,310)   (987)   (2,002)   104   100
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   (16)   (43)   (109)   -   -
   Purchased Electricity for Resale   440   1,151   3,002   -   -
   Other Operation Expense   (25)   (14)   (35)   (14)   (11)
   Maintenance Expense   -   (2)   (5)   1   -
   Property, Plant and Equipment   (14)   (10)   (15)   (1)   (5)
   Regulatory Assets (a)   1,590   278   -   -   -
 Balance in AOCI as of December 31, 2012 $ (644) $ (446) $ (912) $ 21 $ 22
                    
 Interest Rate and               
 Foreign Currency APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2011 $ 1,024 $ (14,465) $ 9,454 $ 7,218 $ (15,462)
 Changes in Fair Value Recognized in AOCI   -   (5,777)   -   -   (2,778)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,053   595   (1,363)   (758)   2,669
 Balance in AOCI as of December 31, 2012 $ 2,077 $ (19,647) $ 8,095 $ 6,460 $ (15,571)
                    
 Total – Cash Flow Hedges APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2011 $ (285) $ (15,284) $ 7,706 $ 7,149 $ (15,524)
 Changes in Fair Value Recognized in AOCI   (1,310)   (6,764)   (2,002)   104   (2,678)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   (16)   (43)   (109)   -   -
   Purchased Electricity for Resale   440   1,151   3,002   -   -
   Other Operation Expense   (25)   (14)   (35)   (14)   (11)
   Maintenance Expense   -   (2)   (5)   1   -
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,053   595   (1,363)   (758)   2,669
   Property, Plant and Equipment   (14)   (10)   (15)   (1)   (5)
   Regulatory Assets (a)   1,590   278   -   -   -
 Balance in AOCI as of December 31, 2012 $ 1,433 $ (20,093) $ 7,183 $ 6,481 $ (15,549)

 Total Accumulated Other Comprehensive Income (Loss) Activity for Cash Flow Hedges
  Year Ended December 31, 2011
  
 Commodity APCo I&M OPCo PSO SWEPCo
   (in thousands)
 Balance in AOCI as of December 31, 2010 $ (273) $ (178) $ (364) $ 88 $ 82
 Changes in Fair Value Recognized in AOCI   (2,077)   (1,294)   (2,748)   108   102
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   249   544   1,457   -   -
   Purchased Electricity for Resale   62   79   425   -   -
   Other Operation Expense   (95)   (71)   (160)   (93)   (93)
   Maintenance Expense   (169)   (64)   (141)   (62)   (65)
   Property, Plant and Equipment   (175)   (90)   (217)   (110)   (88)
   Regulatory Assets (a)   1,169   255   -   -   -
 Balance in AOCI as of December 31, 2011 $ (1,309) $ (819) $ (1,748) $ (69) $ (62)
                    
 Interest Rate and               
 Foreign Currency APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2010 $ 217 $ (8,507) $ 10,813 $ 8,406 $ (4,272)
 Changes in Fair Value Recognized in AOCI   (373)   (6,913)   -   (475)   (12,438)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,180   955   (1,363)   (713)   1,248
 Balance in AOCI as of December 31, 2011 $ 1,024 $ (14,465) $ 9,454 $ 7,218 $ (15,462)
                    
 Total – Cash Flow Hedges APCo I&M OPCo PSO SWEPCo
      (in thousands)
 Balance in AOCI as of December 31, 2010 $ (56) $ (8,685) $ 10,449 $ 8,494 $ (4,190)
 Changes in Fair Value Recognized in AOCI   (2,450)   (8,207)   (2,748)   (367)   (12,336)
 Amount of (Gain) or Loss Reclassified               
  from AOCI to Statement of Income/within               
  Balance Sheet:               
   Electric Generation, Transmission and               
    Distribution Revenues   249   544   1,457   -   -
   Purchased Electricity for Resale   62   79   425   -   -
   Other Operation Expense   (95)   (71)   (160)   (93)   (93)
   Maintenance Expense   (169)   (64)   (141)   (62)   (65)
   Depreciation and Amortization               
    Expense   -   -   4   -   -
   Interest Expense   1,180   955   (1,363)   (713)   1,248
   Property, Plant and Equipment   (175)   (90)   (217)   (110)   (88)
   Regulatory Assets (a)   1,169   255   -   -   -
 Balance in AOCI as of December 31, 2011 $ (285) $ (15,284) $ 7,706 $ 7,149 $ (15,524)

(a)       Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets.