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Income Taxes (Tables)
 3 Months Ended
Mar. 31, 2019
Income Taxes [Line Items]  
Schedule of Effective Income Tax Rate Reconciliation
Reconciliations of income taxes for the periods ended March 31 are as follows.
(PPL)
 
Three Months
 
2019
 
2018
Federal income tax on Income Before Income Taxes at statutory tax rate - 21%
$
124

 
$
119

Increase (decrease) due to:
 

 
 

State income taxes, net of federal income tax benefit
13

 
15

Valuation allowance adjustments
7

 
7

Impact of lower U.K. income tax rates
(8
)
 
(7
)
Amortization of excess deferred federal and state income taxes
(11
)
 
(10
)
Other
1

 
(7
)
Total increase (decrease)
2

 
(2
)
Total income taxes
$
126

 
$
117
PPL Electric Utilities Corp [Member]  
Income Taxes [Line Items]  
Schedule of Effective Income Tax Rate Reconciliation
Reconciliations of income taxes for the periods ended March 31 are as follows.

(PPL Electric)
 
 
 
 
Three Months
 
2019
 
2018
Federal income tax on Income Before Income Taxes at statutory tax rate - 21%
$
34

 
$
41

Increase (decrease) due to:
 

 
 

State income taxes, net of federal income tax benefit
13

 
15

Amortization of excess deferred income taxes
(4
)
 
(5
)
Other
(1
)
 
(2
)
Total increase (decrease)
8

 
8

Total income taxes
$
42

 
$
49
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 March 31 are as follows.

(LKE)
 
 
 
 
Three Months
 
2019
 
2018
Federal income tax on Income Before Income Taxes at statutory tax rate - 21%
$
33

 
$
38

Increase (decrease) due to:
 

 
 

State income taxes, net of federal income tax benefit (a)
6

 
8

Amortization of excess deferred federal and state income taxes
(6
)
 
(5
)
Other
(1
)
 
(2
)
Total increase (decrease)
(1
)
 
1

Total income taxes
$
32

 
$
39



(a)
The Kentucky corporate income tax rate was reduced from 6% to 5%, as enacted by HB 487, which became law in April 2018 and is effective for taxable years beginning January 1, 2018.
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 March 31 are as follows.

(LG&E)
 
 
 
 
Three Months
 
2019
 
2018
Federal income tax on Income Before Income Taxes at statutory tax rate - 21%
$
17

 
$
20

Increase (decrease) due to:
 

 
 

State income taxes, net of federal income tax benefit (a)
3

 
4

Amortization of excess deferred federal and state income taxes
(3
)
 
(2
)
Other
—

 
(1
)
Total increase (decrease)
—

 
1

Total income taxes
$
17

 
$
21



(a)
The Kentucky corporate income tax rate was reduced from 6% to 5%, as enacted by HB 487, which became law in April 2018 and is effective for taxable years beginning January 1, 2018.
Kentucky Utilities Co [Member]  
Income Taxes [Line Items]  
Schedule of Effective Income Tax Rate Reconciliation
Reconciliations of income taxes for the periods ended March 31 are as follows.

(KU)
 
 
 
 
Three Months
 
2019
 
2018
Federal income tax on Income Before Income Taxes at statutory tax rate - 21%
$
22

 
$
23

Increase (decrease) due to:
 

 
 

State income taxes, net of federal income tax benefit (a)
4

 
5

Amortization of excess deferred federal and state income taxes
(3
)
 
(3
)
Other
(1
)
 
(1
)
Total increase (decrease)
—

 
1

Total income taxes
$
22

 
$
24



(a)
The Kentucky corporate income tax rate was reduced from 6% to 5%, as enacted by HB 487, which became law in April 2018 and is effective for taxable years beginning January 1, 2018.