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Income Taxes (Tables)
6 Months Ended
Jun. 30, 2016
Income Taxes [Line Items]  
Schedule of Effective Income Tax Rate Reconciliation
Reconciliations of income taxes for the periods ended June 30 are as follows.
 
(PPL)
 
Three Months
 
Six Months
 
2016
 
2015
 
2016
 
2015
Federal income tax on Income from Continuing Operations Before
Income Taxes at statutory tax rate - 35%
$
236

 
$
112

 
$
467

 
$
382

Increase (decrease) due to:
 

 
 

 
 

 
 

State income taxes, net of federal income tax benefit
9

 
9

 
22

 
29

Valuation allowance adjustments
3

 
5

 
9

 
8

Impact of lower U.K. income tax rates
(45
)
 
(36
)
 
(99
)
 
(98
)
Federal and state tax reserve adjustments (a)

 
(12
)
 

 
(12
)
Interest benefit on U.K. financing entities
(4
)
 
(3
)
 
(9
)
 
(11
)
Stock-based compensation (b)
(3
)
 

 
(11
)
 

Other
(4
)
 
(4
)
 
(8
)
 
(10
)
Total increase (decrease)
(44
)
 
(41
)
 
(96
)
 
(94
)
Total income taxes
$
192

 
$
71

 
$
371

 
$
288

 
(a)
During the three and six months ended June 30, 2015, PPL recorded a tax benefit to adjust the settled refund amount approved by Joint Committee of Taxation for the open audit years 1998 - 2011.
(b)
During the three and six months ended June 30, 2016, PPL recorded lower income tax expense related to the application of new stock-based compensation accounting guidance. See Note 2 for additional information.
PPL Electric Utilities Corp [Member]  
Income Taxes [Line Items]  
Schedule of Effective Income Tax Rate Reconciliation
Reconciliations of income taxes for the periods ended June 30 are as follows.

(PPL Electric)
 
 
 
 
 
 
 
 
Three Months
 
Six Months
 
2016
 
2015
 
2016
 
2015
Federal income tax on Income Before Income Taxes at statutory tax rate - 35%
$
44

 
$
30

 
$
97

 
$
81

Increase (decrease) due to:
 

 
 

 
 

 
 

State income taxes, net of federal income tax benefit
8

 
4

 
18

 
14

Federal and state tax reserve adjustments

 
2

 

 
2

Depreciation not normalized
(2
)
 
(1
)
 
(3
)
 
(2
)
Stock-based compensation (a)
(2
)
 

 
(7
)
 

Other

 
1

 
(1
)
 

Total increase (decrease)
4

 
6

 
7

 
14

Total income taxes
$
48

 
$
36

 
$
104

 
$
95

 
(a)
During the three and six months ended June 30, 2016, PPL Electric recorded lower income tax expense related to the application of new stock-based compensation accounting guidance. See Note 2 for additional information.

LG And E And KU Energy LLC [Member]  
Income Taxes [Line Items]  
Schedule of Effective Income Tax Rate Reconciliation
Reconciliations of income taxes for the periods ended June 30 are as follows.
(LKE)  
 
 
 
 
 
 
 
 
Three Months
 
Six Months
 
2016
 
2015
 
2016
 
2015
Federal income tax on Income Before Income Taxes at statutory tax rate - 35%
$
47

 
$
37

 
$
114

 
$
104

Increase (decrease) due to:
 

 
 

 
 

 
 

State income taxes, net of federal income tax benefit
5

 
4

 
12

 
11

Valuation allowance adjustments (a)

 
5

 

 
8

Stock-based compensation

 

 
(1
)
 

Other
(1
)
 
(1
)
 
(2
)
 
(2
)
Total increase (decrease)
4

 
8

 
9

 
17

Total income taxes
$
51

 
$
45

 
$
123

 
$
121

 
(a)
Represents a valuation allowance against tax credits expiring in 2016 and 2017 that are more likely than not to expire before being utilized.
Louisville Gas And Electric Co [Member]  
Income Taxes [Line Items]  
Schedule of Effective Income Tax Rate Reconciliation
Reconciliations of income taxes for the periods ended June 30 are as follows.

(LG&E)
 
 
 
 
 
 
 
 
Three Months
 
Six Months
 
2016
 
2015
 
2016
 
2015
Federal income tax on Income Before Income Taxes at statutory tax rate - 35%
$
22

 
$
20

 
$
54

 
$
50

Increase (decrease) due to:
 

 
 

 
 

 
 

State income taxes, net of federal income tax benefit
2

 
2

 
6

 
5

Other

 

 
(1
)
 

Total increase (decrease)
2

 
2

 
5

 
5

Total income taxes
$
24

 
$
22

 
$
59

 
$
55

Kentucky Utilities Co [Member]  
Income Taxes [Line Items]  
Schedule of Effective Income Tax Rate Reconciliation
Reconciliations of income taxes for the periods ended June 30 are as follows.

(KU)
 
 
 
 
 
 
 
 
Three Months
 
Six Months
 
2016
 
2015
 
2016
 
2015
Federal income tax on Income Before Income Taxes at statutory tax rate - 35%
$
31

 
$
22

 
$
73

 
$
66

Increase (decrease) due to:
 

 
 

 
 

 
 

State income taxes, net of federal income tax benefit
3

 
2

 
7

 
7

Other

 

 

 
(2
)
Total increase (decrease)
3

 
2

 
7

 
5

Total income taxes
$
34

 
$
24

 
$
80

 
$
71