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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2012
Income Taxes Tables [Abstract]  
Income Tax Expense On Continuing Operations
   December 31,
   2012 2011 2010
           
   (in millions)
 Federal:         
  Current $ - $ - $ (8)
  Deferred   24   (150)   (125)
 State:         
  Current   (2)   1   1
  Deferred   (11)   1   (19)
 Foreign:         
  Current   562   852   678
  Deferred   135   (70)   66
 Total $ 708 $ 634 $ 593
Reconciliation Of US Federal Income Tax Rates And AES Effective Tax Rate For The Current And Two Prior Years
   December 31,
   2012 2011 2010
 Statutory Federal tax rate 35% 35% 35%
 State taxes, net of Federal tax benefit -15% 0% -3%
 Taxes on foreign earnings -21% -3% -2%
 Valuation allowance 13% -3% 0%
 Gain (loss) on sale of businesses 0% 0% 4%
 Chilean withholding tax reversals 0% 0% -3%
 Change in tax law 13% 0% 0%
 DPL goodwill impairment 203% 0% 0%
 Other - net -3% 0% 0%
 Effective tax rate 225% 29% 31%
Schedule Of Income Tax Payable And Receivable
   December 31,
   2012 2011
        
   (in millions)
 Income taxes receivable - current $ 296 $ 563
 Income taxes receivable - noncurrent   15   21
 Total income taxes receivable $ 311 $ 584
        
 Income taxes payable - current $ 405 $ 759
 Income taxes payable - noncurrent   2   3
 Total income taxes payable $ 407 $ 762
Summary Of Deferred Tax Assets And Liabilities
   December 31,
   2012 2011
        
   (in millions)
 Differences between book and tax basis of property $ (2,067) $ (1,909)
 Cumulative translation adjustment   (43)   (39)
 Other taxable temporary differences   (419)   (321)
 Total deferred tax liability   (2,529)   (2,269)
        
 Operating loss carryforwards   1,604   1,481
 Capital loss carryforwards   108   112
 Bad debt and other book provisions   358   463
 Retirement costs   619   360
 Tax credit carryforwards   46   46
 Other deductible temporary differences   555   516
 Total gross deferred tax asset   3,290   2,978
 Less: valuation allowance   (906)   (901)
 Total net deferred tax asset   2,384   2,077
 Net deferred tax asset/(liability) $ (145) $ (192)
Income Before Income Taxes, Foreign And Domestic
   December 31,
   2012 2011 2010
           
   (in millions)
 U.S.  $ (1,915) $ (526) $ (539)
 Non-U.S.    2,229   2,737   2,429
 Total $ 314 $ 2,211 $ 1,890
Tax Years Potentially Subject To Examination And Jurisdictions
 Jurisdiction Tax Years Subject to Examination
    
 Argentina 2006-2012
 Brazil 2007-2012
 Cameroon 2008-2012
 Chile 2009-2012
 Colombia 2010-2012
 El Salvador 2009-2012
 United Kingdom 2009-2012
 United States (Federal) 1994-2012
Unrecognized Tax Benefits
   2012 2011 2010
           
   (in millions)
 Balance at January 1 $ 471 $ 437 $ 510
 Additions for current year tax positions   12   7   14
 Additions for tax positions of prior years   34   49   51
 Reductions for tax positions of prior years   (29)   (18)   (46)
 Effects of foreign currency translation   -   (1)   (2)
 Settlements   (6)   -   (67)
 Lapse of statute of limitations   (1)   (3)   (23)
 Balance at December 31 $ 481 $ 471 $ 437