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Leases (Tables)
 12 Months Ended
Dec. 31, 2013
Lease Rental Costs
  Years Ended December 31,
Lease Rental Costs 2013 2012 2011
  (in millions)
Net Lease Expense on Operating Leases $ 327 $ 346 $ 343
Amortization of Capital Leases   74   73   72
Interest on Capital Leases   28   29   32
Total Lease Rental Costs $ 429 $ 448 $ 447
Property, Plant and Equipment and Related Obligations Under Capital Leases
   December 31,
 Property, Plant and Equipment Under Capital Leases 2013 2012
   (in millions)
 Generation $ 103 $ 117
 Other Property, Plant and Equipment   627   495
 Total Property, Plant and Equipment Under Capital Leases   730   612
 Accumulated Amortization   197   173
 Net Property, Plant and Equipment Under Capital Leases $ 533 $ 439
         
 Obligations Under Capital Leases      
 Noncurrent Liability $ 428 $ 375
 Liability Due Within One Year   110   74
 Total Obligations Under Capital Leases $ 538 $ 449
Future Minimum Lease Payments
     Noncancelable
 Future Minimum Lease Payments Capital Leases Operating Leases
    (in millions)
 2014 $ 135 $ 288
 2015   111   268
 2016   97   246
 2017   79   230
 2018   44   215
 Later Years   215   862
 Total Future Minimum Lease Payments   681 $ 2,109
 Less Estimated Interest Element   143   
 Estimated Present Value of Future Minimum      
  Lease Payments $ 538   
Rockport Lease [Member]
  
Future Minimum Lease Payments
 Future Minimum Lease Payments AEGCo I&M
    (in millions)
 2014 $ 74 $ 74
 2015   74   74
 2016   74   74
 2017   74   74
 2018   74   74
 Later Years   295   295
 Total Future Minimum Lease Payments $ 665 $ 665
Nuclear Fuel Lease [Member]
  
Future Minimum Lease Payments
 Future Minimum Lease Payments I&M
    (in millions)
 2014 $ 43
 2015   32
 2016   27
 2017   6
 2018   2
 Total Future Minimum Lease Payments $ 110
Appalachian Power Co [Member]
  
Lease Rental Costs
Year Ended December 31, 2013 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Net Lease Expense on Operating Leases $ 17,500 $ 95,606 $ 57,814 $ 4,131 $ 6,328
Amortization of Capital Leases   6,293   11,307   7,800   4,099   15,456
Interest on Capital Leases   1,410   1,870   4,125   782   8,153
Total Lease Rental Costs $ 25,203 $ 108,783 $ 69,739 $ 9,012 $ 29,937
                
Year Ended December 31, 2012 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Net Lease Expense on Operating Leases $ 15,633 $ 95,509 $ 59,836 $ 5,283 $ 5,797
Amortization of Capital Leases   7,429   8,429   10,906   3,839   14,793
Interest on Capital Leases   1,782   1,738   3,307   815   9,041
Total Lease Rental Costs $ 24,844 $ 105,676 $ 74,049 $ 9,937 $ 29,631
                
Year Ended December 31, 2011 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Net Lease Expense on Operating Leases $ 13,488 $ 94,317 $ 59,983 $ 6,532 $ 5,990
Amortization of Capital Leases   7,880   8,762   13,118   4,438   12,694
Interest on Capital Leases   1,898   2,115   3,753   1,098   9,651
Total Lease Rental Costs $ 23,266 $ 105,194 $ 76,854 $ 12,068 $ 28,335
Property, Plant and Equipment and Related Obligations Under Capital Leases
December 31, 2013 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Property, Plant and Equipment Under               
 Capital Leases:               
Generation $ 13,531 $ 18,324 $ - $ 9,675 $ 34,476
Other Property, Plant and Equipment   18,720   130,249   26,532   15,413   157,853
Total Property, Plant and Equipment   32,251   148,573   26,532   25,088   192,329
Accumulated Amortization   11,379   15,356   9,800   10,957   66,637
Net Property, Plant and Equipment               
 Under Capital Leases $ 20,872 $ 133,217 $ 16,732 $ 14,131 $ 125,692
                 
Obligations Under Capital Leases:               
Noncurrent Liability $ 15,718 $ 87,000 $ 11,212 $ 10,222 $ 105,086
Liability Due Within One Year   5,154   46,210   5,520   3,909   17,899
                 
Total Obligations Under Capital Leases $ 20,872 $ 133,210 $ 16,732 $ 14,131 $ 122,985

December 31, 2012 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Property, Plant and Equipment Under               
 Capital Leases:               
Generation $ 11,798 $ 19,102 $ 39,080 $ 3,624 $ 27,745
Other Property, Plant and Equipment   20,944   22,697   35,666   15,614   154,166
Total Property, Plant and Equipment   32,742   41,799   74,746   19,238   181,911
Accumulated Amortization   10,282   13,154   27,513   6,738   50,440
Net Property, Plant and Equipment               
 Under Capital Leases $ 22,460 $ 28,645 $ 47,233 $ 12,500 $ 131,471
                 
Obligations Under Capital Leases:               
Noncurrent Liability $ 16,375 $ 22,842 $ 36,381 $ 8,864 $ 114,161
Liability Due Within One Year   6,085   5,803   14,707   3,636   17,599
                 
Total Obligations Under Capital Leases $ 22,460 $ 28,645 $ 51,088 $ 12,500 $ 131,760
Future Minimum Lease Payments
Capital Leases APCo I&M OPCo PSO SWEPCo
  (in thousands)
2014 $ 5,930 $ 49,685 $ 6,224 $ 4,548 $ 25,172
2015   4,789   39,468   3,217   3,174   22,837
2016   4,247   31,053   2,762   2,828   19,871
2017   3,610   9,512   2,697   2,834   21,247
2018   2,602   4,338   2,136   1,798   11,134
Later Years   2,079   10,244   1,914   1,127   55,475
Total Future Minimum Lease               
 Payments   23,257   144,300   18,950   16,309   155,736
Less Estimated Interest Element   2,385   11,090   2,218   2,178   32,751
Estimated Present Value of Future               
 Minimum Lease Payments $ 20,872 $ 133,210 $ 16,732 $ 14,131 $ 122,985
                 
Noncancelable Operating Leases APCo I&M OPCo PSO SWEPCo
  (in thousands)
2014 $ 16,327 $ 98,819 $ 11,986 $ 2,241 $ 5,010
2015   12,976   95,935   10,817   2,004   4,369
2016   12,111   90,431   10,097   1,654   3,721
2017   11,661   84,624   9,575   1,487   3,338
2018   10,737   83,525   8,292   1,123   2,887
Later Years   46,452   341,472   31,627   2,031   14,823
Total Future Minimum Lease               
 Payments $ 110,264 $ 794,806 $ 82,394 $ 10,540 $ 34,148
Maximum Potential Loss
   Maximum 
 Company Potential Loss 
   (in thousands) 
 APCo $ 3,696 
 I&M   2,548 
 OPCo   4,555 
 PSO   1,354 
 SWEPCo   2,366 
Indiana Michigan Power Co [Member]
  
Lease Rental Costs
Year Ended December 31, 2013 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Net Lease Expense on Operating Leases $ 17,500 $ 95,606 $ 57,814 $ 4,131 $ 6,328
Amortization of Capital Leases   6,293   11,307   7,800   4,099   15,456
Interest on Capital Leases   1,410   1,870   4,125   782   8,153
Total Lease Rental Costs $ 25,203 $ 108,783 $ 69,739 $ 9,012 $ 29,937
                
Year Ended December 31, 2012 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Net Lease Expense on Operating Leases $ 15,633 $ 95,509 $ 59,836 $ 5,283 $ 5,797
Amortization of Capital Leases   7,429   8,429   10,906   3,839   14,793
Interest on Capital Leases   1,782   1,738   3,307   815   9,041
Total Lease Rental Costs $ 24,844 $ 105,676 $ 74,049 $ 9,937 $ 29,631
                
Year Ended December 31, 2011 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Net Lease Expense on Operating Leases $ 13,488 $ 94,317 $ 59,983 $ 6,532 $ 5,990
Amortization of Capital Leases   7,880   8,762   13,118   4,438   12,694
Interest on Capital Leases   1,898   2,115   3,753   1,098   9,651
Total Lease Rental Costs $ 23,266 $ 105,194 $ 76,854 $ 12,068 $ 28,335
Property, Plant and Equipment and Related Obligations Under Capital Leases
December 31, 2013 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Property, Plant and Equipment Under               
 Capital Leases:               
Generation $ 13,531 $ 18,324 $ - $ 9,675 $ 34,476
Other Property, Plant and Equipment   18,720   130,249   26,532   15,413   157,853
Total Property, Plant and Equipment   32,251   148,573   26,532   25,088   192,329
Accumulated Amortization   11,379   15,356   9,800   10,957   66,637
Net Property, Plant and Equipment               
 Under Capital Leases $ 20,872 $ 133,217 $ 16,732 $ 14,131 $ 125,692
                 
Obligations Under Capital Leases:               
Noncurrent Liability $ 15,718 $ 87,000 $ 11,212 $ 10,222 $ 105,086
Liability Due Within One Year   5,154   46,210   5,520   3,909   17,899
                 
Total Obligations Under Capital Leases $ 20,872 $ 133,210 $ 16,732 $ 14,131 $ 122,985

December 31, 2012 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Property, Plant and Equipment Under               
 Capital Leases:               
Generation $ 11,798 $ 19,102 $ 39,080 $ 3,624 $ 27,745
Other Property, Plant and Equipment   20,944   22,697   35,666   15,614   154,166
Total Property, Plant and Equipment   32,742   41,799   74,746   19,238   181,911
Accumulated Amortization   10,282   13,154   27,513   6,738   50,440
Net Property, Plant and Equipment               
 Under Capital Leases $ 22,460 $ 28,645 $ 47,233 $ 12,500 $ 131,471
                 
Obligations Under Capital Leases:               
Noncurrent Liability $ 16,375 $ 22,842 $ 36,381 $ 8,864 $ 114,161
Liability Due Within One Year   6,085   5,803   14,707   3,636   17,599
                 
Total Obligations Under Capital Leases $ 22,460 $ 28,645 $ 51,088 $ 12,500 $ 131,760
Future Minimum Lease Payments
Capital Leases APCo I&M OPCo PSO SWEPCo
  (in thousands)
2014 $ 5,930 $ 49,685 $ 6,224 $ 4,548 $ 25,172
2015   4,789   39,468   3,217   3,174   22,837
2016   4,247   31,053   2,762   2,828   19,871
2017   3,610   9,512   2,697   2,834   21,247
2018   2,602   4,338   2,136   1,798   11,134
Later Years   2,079   10,244   1,914   1,127   55,475
Total Future Minimum Lease               
 Payments   23,257   144,300   18,950   16,309   155,736
Less Estimated Interest Element   2,385   11,090   2,218   2,178   32,751
Estimated Present Value of Future               
 Minimum Lease Payments $ 20,872 $ 133,210 $ 16,732 $ 14,131 $ 122,985
                 
Noncancelable Operating Leases APCo I&M OPCo PSO SWEPCo
  (in thousands)
2014 $ 16,327 $ 98,819 $ 11,986 $ 2,241 $ 5,010
2015   12,976   95,935   10,817   2,004   4,369
2016   12,111   90,431   10,097   1,654   3,721
2017   11,661   84,624   9,575   1,487   3,338
2018   10,737   83,525   8,292   1,123   2,887
Later Years   46,452   341,472   31,627   2,031   14,823
Total Future Minimum Lease               
 Payments $ 110,264 $ 794,806 $ 82,394 $ 10,540 $ 34,148
Maximum Potential Loss
   Maximum 
 Company Potential Loss 
   (in thousands) 
 APCo $ 3,696 
 I&M   2,548 
 OPCo   4,555 
 PSO   1,354 
 SWEPCo   2,366 
Indiana Michigan Power Co [Member] | Rockport Lease [Member]
  
Future Minimum Lease Payments
 Future Minimum Lease Payments I&M
    (in thousands)
 2014 $ 73,854
 2015   73,854
 2016   73,854
 2017   73,854
 2018   73,854
 Later Years   295,416
 Total Future Minimum Lease Payments $ 664,686
Indiana Michigan Power Co [Member] | Nuclear Fuel Lease [Member]
  
Future Minimum Lease Payments
 Future Minimum Lease Payments I&M
    (in thousands)
 2014 $ 42,567
 2015   32,198
 2016   26,888
 2017   5,762
 2018   2,398
 Total Future Minimum Lease Payments $ 109,813
Ohio Power Co [Member]
  
Lease Rental Costs
Year Ended December 31, 2013 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Net Lease Expense on Operating Leases $ 17,500 $ 95,606 $ 57,814 $ 4,131 $ 6,328
Amortization of Capital Leases   6,293   11,307   7,800   4,099   15,456
Interest on Capital Leases   1,410   1,870   4,125   782   8,153
Total Lease Rental Costs $ 25,203 $ 108,783 $ 69,739 $ 9,012 $ 29,937
                
Year Ended December 31, 2012 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Net Lease Expense on Operating Leases $ 15,633 $ 95,509 $ 59,836 $ 5,283 $ 5,797
Amortization of Capital Leases   7,429   8,429   10,906   3,839   14,793
Interest on Capital Leases   1,782   1,738   3,307   815   9,041
Total Lease Rental Costs $ 24,844 $ 105,676 $ 74,049 $ 9,937 $ 29,631
                
Year Ended December 31, 2011 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Net Lease Expense on Operating Leases $ 13,488 $ 94,317 $ 59,983 $ 6,532 $ 5,990
Amortization of Capital Leases   7,880   8,762   13,118   4,438   12,694
Interest on Capital Leases   1,898   2,115   3,753   1,098   9,651
Total Lease Rental Costs $ 23,266 $ 105,194 $ 76,854 $ 12,068 $ 28,335
Property, Plant and Equipment and Related Obligations Under Capital Leases
December 31, 2013 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Property, Plant and Equipment Under               
 Capital Leases:               
Generation $ 13,531 $ 18,324 $ - $ 9,675 $ 34,476
Other Property, Plant and Equipment   18,720   130,249   26,532   15,413   157,853
Total Property, Plant and Equipment   32,251   148,573   26,532   25,088   192,329
Accumulated Amortization   11,379   15,356   9,800   10,957   66,637
Net Property, Plant and Equipment               
 Under Capital Leases $ 20,872 $ 133,217 $ 16,732 $ 14,131 $ 125,692
                 
Obligations Under Capital Leases:               
Noncurrent Liability $ 15,718 $ 87,000 $ 11,212 $ 10,222 $ 105,086
Liability Due Within One Year   5,154   46,210   5,520   3,909   17,899
                 
Total Obligations Under Capital Leases $ 20,872 $ 133,210 $ 16,732 $ 14,131 $ 122,985

December 31, 2012 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Property, Plant and Equipment Under               
 Capital Leases:               
Generation $ 11,798 $ 19,102 $ 39,080 $ 3,624 $ 27,745
Other Property, Plant and Equipment   20,944   22,697   35,666   15,614   154,166
Total Property, Plant and Equipment   32,742   41,799   74,746   19,238   181,911
Accumulated Amortization   10,282   13,154   27,513   6,738   50,440
Net Property, Plant and Equipment               
 Under Capital Leases $ 22,460 $ 28,645 $ 47,233 $ 12,500 $ 131,471
                 
Obligations Under Capital Leases:               
Noncurrent Liability $ 16,375 $ 22,842 $ 36,381 $ 8,864 $ 114,161
Liability Due Within One Year   6,085   5,803   14,707   3,636   17,599
                 
Total Obligations Under Capital Leases $ 22,460 $ 28,645 $ 51,088 $ 12,500 $ 131,760
Future Minimum Lease Payments
Capital Leases APCo I&M OPCo PSO SWEPCo
  (in thousands)
2014 $ 5,930 $ 49,685 $ 6,224 $ 4,548 $ 25,172
2015   4,789   39,468   3,217   3,174   22,837
2016   4,247   31,053   2,762   2,828   19,871
2017   3,610   9,512   2,697   2,834   21,247
2018   2,602   4,338   2,136   1,798   11,134
Later Years   2,079   10,244   1,914   1,127   55,475
Total Future Minimum Lease               
 Payments   23,257   144,300   18,950   16,309   155,736
Less Estimated Interest Element   2,385   11,090   2,218   2,178   32,751
Estimated Present Value of Future               
 Minimum Lease Payments $ 20,872 $ 133,210 $ 16,732 $ 14,131 $ 122,985
                 
Noncancelable Operating Leases APCo I&M OPCo PSO SWEPCo
  (in thousands)
2014 $ 16,327 $ 98,819 $ 11,986 $ 2,241 $ 5,010
2015   12,976   95,935   10,817   2,004   4,369
2016   12,111   90,431   10,097   1,654   3,721
2017   11,661   84,624   9,575   1,487   3,338
2018   10,737   83,525   8,292   1,123   2,887
Later Years   46,452   341,472   31,627   2,031   14,823
Total Future Minimum Lease               
 Payments $ 110,264 $ 794,806 $ 82,394 $ 10,540 $ 34,148
Maximum Potential Loss
   Maximum 
 Company Potential Loss 
   (in thousands) 
 APCo $ 3,696 
 I&M   2,548 
 OPCo   4,555 
 PSO   1,354 
 SWEPCo   2,366 
Public Service Co of Oklahoma [Member]
  
Lease Rental Costs
Year Ended December 31, 2013 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Net Lease Expense on Operating Leases $ 17,500 $ 95,606 $ 57,814 $ 4,131 $ 6,328
Amortization of Capital Leases   6,293   11,307   7,800   4,099   15,456
Interest on Capital Leases   1,410   1,870   4,125   782   8,153
Total Lease Rental Costs $ 25,203 $ 108,783 $ 69,739 $ 9,012 $ 29,937
                
Year Ended December 31, 2012 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Net Lease Expense on Operating Leases $ 15,633 $ 95,509 $ 59,836 $ 5,283 $ 5,797
Amortization of Capital Leases   7,429   8,429   10,906   3,839   14,793
Interest on Capital Leases   1,782   1,738   3,307   815   9,041
Total Lease Rental Costs $ 24,844 $ 105,676 $ 74,049 $ 9,937 $ 29,631
                
Year Ended December 31, 2011 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Net Lease Expense on Operating Leases $ 13,488 $ 94,317 $ 59,983 $ 6,532 $ 5,990
Amortization of Capital Leases   7,880   8,762   13,118   4,438   12,694
Interest on Capital Leases   1,898   2,115   3,753   1,098   9,651
Total Lease Rental Costs $ 23,266 $ 105,194 $ 76,854 $ 12,068 $ 28,335
Property, Plant and Equipment and Related Obligations Under Capital Leases
December 31, 2013 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Property, Plant and Equipment Under               
 Capital Leases:               
Generation $ 13,531 $ 18,324 $ - $ 9,675 $ 34,476
Other Property, Plant and Equipment   18,720   130,249   26,532   15,413   157,853
Total Property, Plant and Equipment   32,251   148,573   26,532   25,088   192,329
Accumulated Amortization   11,379   15,356   9,800   10,957   66,637
Net Property, Plant and Equipment               
 Under Capital Leases $ 20,872 $ 133,217 $ 16,732 $ 14,131 $ 125,692
                 
Obligations Under Capital Leases:               
Noncurrent Liability $ 15,718 $ 87,000 $ 11,212 $ 10,222 $ 105,086
Liability Due Within One Year   5,154   46,210   5,520   3,909   17,899
                 
Total Obligations Under Capital Leases $ 20,872 $ 133,210 $ 16,732 $ 14,131 $ 122,985

December 31, 2012 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Property, Plant and Equipment Under               
 Capital Leases:               
Generation $ 11,798 $ 19,102 $ 39,080 $ 3,624 $ 27,745
Other Property, Plant and Equipment   20,944   22,697   35,666   15,614   154,166
Total Property, Plant and Equipment   32,742   41,799   74,746   19,238   181,911
Accumulated Amortization   10,282   13,154   27,513   6,738   50,440
Net Property, Plant and Equipment               
 Under Capital Leases $ 22,460 $ 28,645 $ 47,233 $ 12,500 $ 131,471
                 
Obligations Under Capital Leases:               
Noncurrent Liability $ 16,375 $ 22,842 $ 36,381 $ 8,864 $ 114,161
Liability Due Within One Year   6,085   5,803   14,707   3,636   17,599
                 
Total Obligations Under Capital Leases $ 22,460 $ 28,645 $ 51,088 $ 12,500 $ 131,760
Future Minimum Lease Payments
Capital Leases APCo I&M OPCo PSO SWEPCo
  (in thousands)
2014 $ 5,930 $ 49,685 $ 6,224 $ 4,548 $ 25,172
2015   4,789   39,468   3,217   3,174   22,837
2016   4,247   31,053   2,762   2,828   19,871
2017   3,610   9,512   2,697   2,834   21,247
2018   2,602   4,338   2,136   1,798   11,134
Later Years   2,079   10,244   1,914   1,127   55,475
Total Future Minimum Lease               
 Payments   23,257   144,300   18,950   16,309   155,736
Less Estimated Interest Element   2,385   11,090   2,218   2,178   32,751
Estimated Present Value of Future               
 Minimum Lease Payments $ 20,872 $ 133,210 $ 16,732 $ 14,131 $ 122,985
                 
Noncancelable Operating Leases APCo I&M OPCo PSO SWEPCo
  (in thousands)
2014 $ 16,327 $ 98,819 $ 11,986 $ 2,241 $ 5,010
2015   12,976   95,935   10,817   2,004   4,369
2016   12,111   90,431   10,097   1,654   3,721
2017   11,661   84,624   9,575   1,487   3,338
2018   10,737   83,525   8,292   1,123   2,887
Later Years   46,452   341,472   31,627   2,031   14,823
Total Future Minimum Lease               
 Payments $ 110,264 $ 794,806 $ 82,394 $ 10,540 $ 34,148
Maximum Potential Loss
   Maximum 
 Company Potential Loss 
   (in thousands) 
 APCo $ 3,696 
 I&M   2,548 
 OPCo   4,555 
 PSO   1,354 
 SWEPCo   2,366 
Southwestern Electric Power Co [Member]
  
Lease Rental Costs
Year Ended December 31, 2013 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Net Lease Expense on Operating Leases $ 17,500 $ 95,606 $ 57,814 $ 4,131 $ 6,328
Amortization of Capital Leases   6,293   11,307   7,800   4,099   15,456
Interest on Capital Leases   1,410   1,870   4,125   782   8,153
Total Lease Rental Costs $ 25,203 $ 108,783 $ 69,739 $ 9,012 $ 29,937
                
Year Ended December 31, 2012 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Net Lease Expense on Operating Leases $ 15,633 $ 95,509 $ 59,836 $ 5,283 $ 5,797
Amortization of Capital Leases   7,429   8,429   10,906   3,839   14,793
Interest on Capital Leases   1,782   1,738   3,307   815   9,041
Total Lease Rental Costs $ 24,844 $ 105,676 $ 74,049 $ 9,937 $ 29,631
                
Year Ended December 31, 2011 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Net Lease Expense on Operating Leases $ 13,488 $ 94,317 $ 59,983 $ 6,532 $ 5,990
Amortization of Capital Leases   7,880   8,762   13,118   4,438   12,694
Interest on Capital Leases   1,898   2,115   3,753   1,098   9,651
Total Lease Rental Costs $ 23,266 $ 105,194 $ 76,854 $ 12,068 $ 28,335
Property, Plant and Equipment and Related Obligations Under Capital Leases
December 31, 2013 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Property, Plant and Equipment Under               
 Capital Leases:               
Generation $ 13,531 $ 18,324 $ - $ 9,675 $ 34,476
Other Property, Plant and Equipment   18,720   130,249   26,532   15,413   157,853
Total Property, Plant and Equipment   32,251   148,573   26,532   25,088   192,329
Accumulated Amortization   11,379   15,356   9,800   10,957   66,637
Net Property, Plant and Equipment               
 Under Capital Leases $ 20,872 $ 133,217 $ 16,732 $ 14,131 $ 125,692
                 
Obligations Under Capital Leases:               
Noncurrent Liability $ 15,718 $ 87,000 $ 11,212 $ 10,222 $ 105,086
Liability Due Within One Year   5,154   46,210   5,520   3,909   17,899
                 
Total Obligations Under Capital Leases $ 20,872 $ 133,210 $ 16,732 $ 14,131 $ 122,985

December 31, 2012 APCo I&M OPCo PSO SWEPCo
  (in thousands)
Property, Plant and Equipment Under               
 Capital Leases:               
Generation $ 11,798 $ 19,102 $ 39,080 $ 3,624 $ 27,745
Other Property, Plant and Equipment   20,944   22,697   35,666   15,614   154,166
Total Property, Plant and Equipment   32,742   41,799   74,746   19,238   181,911
Accumulated Amortization   10,282   13,154   27,513   6,738   50,440
Net Property, Plant and Equipment               
 Under Capital Leases $ 22,460 $ 28,645 $ 47,233 $ 12,500 $ 131,471
                 
Obligations Under Capital Leases:               
Noncurrent Liability $ 16,375 $ 22,842 $ 36,381 $ 8,864 $ 114,161
Liability Due Within One Year   6,085   5,803   14,707   3,636   17,599
                 
Total Obligations Under Capital Leases $ 22,460 $ 28,645 $ 51,088 $ 12,500 $ 131,760
Future Minimum Lease Payments
Capital Leases APCo I&M OPCo PSO SWEPCo
  (in thousands)
2014 $ 5,930 $ 49,685 $ 6,224 $ 4,548 $ 25,172
2015   4,789   39,468   3,217   3,174   22,837
2016   4,247   31,053   2,762   2,828   19,871
2017   3,610   9,512   2,697   2,834   21,247
2018   2,602   4,338   2,136   1,798   11,134
Later Years   2,079   10,244   1,914   1,127   55,475
Total Future Minimum Lease               
 Payments   23,257   144,300   18,950   16,309   155,736
Less Estimated Interest Element   2,385   11,090   2,218   2,178   32,751
Estimated Present Value of Future               
 Minimum Lease Payments $ 20,872 $ 133,210 $ 16,732 $ 14,131 $ 122,985
                 
Noncancelable Operating Leases APCo I&M OPCo PSO SWEPCo
  (in thousands)
2014 $ 16,327 $ 98,819 $ 11,986 $ 2,241 $ 5,010
2015   12,976   95,935   10,817   2,004   4,369
2016   12,111   90,431   10,097   1,654   3,721
2017   11,661   84,624   9,575   1,487   3,338
2018   10,737   83,525   8,292   1,123   2,887
Later Years   46,452   341,472   31,627   2,031   14,823
Total Future Minimum Lease               
 Payments $ 110,264 $ 794,806 $ 82,394 $ 10,540 $ 34,148
Maximum Potential Loss
   Maximum 
 Company Potential Loss 
   (in thousands) 
 APCo $ 3,696 
 I&M   2,548 
 OPCo   4,555 
 PSO   1,354 
 SWEPCo   2,366