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Taxes (Tables)
6 Months Ended
Jun. 30, 2012
Taxes [Abstract]  
Components of income tax expense (benefit)
          
 
Three Months Ended
Year to Date
  June 30June 30
Great Plains Energy
2012
2011
2012
2011
Current income taxes
(millions)
Federal
$(3.3)$2.7 $(3.3)$3.8 
State
 0.4  (4.7) 0.3  (4.0)
Foreign
 -  (0.1) -  (0.4)
Total
 (2.9) (2.1) (3.0) (0.6)
Deferred income taxes
            
Federal
 30.8  32.3  22.5  28.9 
State
 5.1  11.4  4.3  7.4 
Total
 35.9  43.7  26.8  36.3 
Noncurrent income taxes
            
Federal
 (0.2) (19.0) (0.2) (18.0)
State
 -  (2.0) -  (1.9)
Foreign
 (0.4) (0.1) (0.1) 0.2 
Total
 (0.6) (21.1) (0.3) (19.7)
Investment tax credit amortization
 (0.6) (0.7) (1.2) (0.8)
Income tax expense
$31.8 $19.8 $22.3 $15.2 
              
          
 
Three Months Ended
Year to Date
 
June 30
June 30
KCP&L
2012
2011
2012
2011
Current income taxes
(millions)
Federal
$0.1 $1.3 $0.2 $2.4 
State
 0.1  0.2  0.1  0.5 
Total
 0.2  1.5  0.3  2.9 
Deferred income taxes
            
Federal
 19.4  23.2  16.1  19.9 
State
 4.2  4.7  4.1  4.5 
Total
 23.6  27.9  20.2  24.4 
Noncurrent income taxes
            
Federal
 (0.3) (11.5) 0.1  (10.6)
State
 (0.1) (1.2) -  (1.1)
Total
 (0.4) (12.7) 0.1  (11.7)
Investment tax credit amortization
 (0.4) (0.5) (0.9) (0.5)
Income tax expense
$23.0 $16.2 $19.7 $15.1 
              
Income tax expense (benefit) and effective income tax rates
          
Great Plains Energy
Income Tax Expense
Income Tax Rate
Three Months Ended June 30
2012
2011
2012
2011
 
(millions)
    
Federal statutory income tax
$31.5 $22.1  35.0 % 35.0 %
Differences between book and tax
          
depreciation not normalized
 1.0  1.1  1.2  1.6 
Amortization of investment tax credits
 (0.6) (0.7) (0.7) (1.1)
Federal income tax credits
 (3.3) (3.8) (3.6) (6.0)
State income taxes
 3.5  2.6  3.9  4.1 
Changes in uncertain tax positions, net
 (0.3) (1.6) (0.4) (2.5)
Valuation allowance
 0.1  0.2  0.1  0.3 
Other
 (0.1) (0.1) -  - 
Total
$31.8 $19.8  35.5 % 31.4 %
              
          
Great Plains Energy
Income Tax Expense
Income Tax Rate
Year to Date June 30
2012
2011
2012
2011
 
(millions)
    
Federal statutory income tax
$25.0 $21.4  35.0 % 35.0 %
Differences between book and tax
         
depreciation not normalized
 2.1  1.9  3.0  3.0 
Amortization of investment tax credits
 (1.2) (0.8) (1.8) (1.4)
Federal income tax credits
 (6.1) (6.8) (8.6) (11.1)
State income taxes
 2.9  3.0  4.1  4.9 
Changes in uncertain tax positions, net
 (0.1) (1.3) (0.1) (2.2)
Valuation allowance
 0.1  (2.2) 0.1  (3.6)
Other
 (0.4) -  (0.4) 0.4 
Total
$22.3 $15.2  31.3 % 25.0 %
              
          
KCP&L
Income Tax Expense
Income Tax Rate
Three Months Ended June 30
2012
2011
2012
2011
 
(millions)
    
Federal statutory income tax
$23.4 $17.4  35.0 % 35.0 %
Differences between book and tax
         
depreciation not normalized
 0.9  0.8  1.3  1.6 
Amortization of investment tax credits
 (0.4) (0.5) (0.7) (1.0)
Federal income tax credits
 (3.3) (3.7) (4.9) (7.6)
State income taxes
 2.6  1.8  4.0  3.8 
Changes in uncertain tax positions, net
 -  0.4  -  0.9 
Other
 (0.2) -  (0.2) (0.2)
Total
$23.0 $16.2  34.5 % 32.5 %
              
          
KCP&L
Income Tax Expense
Income Tax Rate
Year to Date June 30
2012
2011
2012
2011
 
(millions)
    
Federal statutory income tax
$23.0 $18.4  35.0 % 35.0 %
Differences between book and tax
         
depreciation not normalized
 1.8  1.6  2.7  3.0 
Amortization of investment tax credits
 (0.9) (0.5) (1.4) (0.9)
Federal income tax credits
 (6.1) (6.7) (9.3) (12.9)
State income taxes
 2.6  2.0  4.1  3.9 
Changes in uncertain tax positions, net
 -  0.4  -  0.8 
Other
 (0.7) (0.1) (1.1) (0.3)
Total
$19.7 $15.1  30.0 % 28.6 %
              
Liability for unrecognized tax benefits
          
 
Great Plains Energy
KCP&L
 
June 30
December 31
June 30
December 31
 
2012
2011
2012
2011
 
(millions)
Beginning balance January 1
$24.0 $42.0 $8.7 $19.1 
Additions for current year tax positions
 1.5  1.4  1.4  - 
Additions for prior year tax positions
 -  2.4  -  2.3 
Reductions for prior year tax positions
 (1.4) (20.9) (1.3) (12.6)
Statute expirations
 -  (0.7) -  (0.1)
Foreign currency translation adjustments
 (0.1) (0.2) -  - 
Ending balance
$24.0 $24.0 $8.8 $8.7