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Adoption of Accounting Guidance (Tables)
 6 Months Ended
Jun. 30, 2020
Summary Of Significant Accounting Policies [Line Items]  
Financing Receivable, Allowance for Credit Loss [Table Text Block]
The following table shows changes in the allowance for credit losses for the six months ended June 30, 2020:
    
Balance at
Beginning of Period (a)		Charged to IncomeDeductions (b)Balance at
End of Period
PPL    
Accounts Receivable - Customer and Unbilled Revenue$30  $15  $7  $38  
Other (c)27  1  1  27  
PPL Electric    
Accounts Receivable - Customer and Unbilled Revenue$25  $9  $3  $31  
Other1  1  —  2  
    
Balance at
Beginning of Period (a)		Charged to IncomeDeductions (b)Balance at
End of Period
LKE    
Accounts Receivable - Customer and Unbilled Revenue$2  $3  $3  $2  
Other (c)26  —  1  25  
LG&E    
Accounts Receivable - Customer and Unbilled Revenue$1  $1  $1  $1  
KU    
Accounts Receivable - Customer and Unbilled Revenue$1  $2  $2  $1  

(a)Reflects cumulative-effect adjustment upon adoption of current expected credit loss guidance.
(b)Primarily related to uncollectible accounts receivable written off.
(c)Primarily related to receivables at WKE, which are fully reserved.
Reconciliation of Cash, Cash Equivalents and Restricted Cash from the Balance Sheet to Cash Flow Statement
The following provides a reconciliation of Cash, Cash Equivalents and Restricted Cash reported within the Balance Sheets that sum to the total of the same amounts shown on the Statements of Cash Flows:
PPLPPL Electric
June 30,
2020		December 31,
2019		June 30,
2020		December 31,
2019
Cash and cash equivalents$1,278  $815  $13  $262  
Restricted cash - current (a)3  3  2  2  
Restricted cash - noncurrent (a)20  18  —  —  
Total Cash, Cash Equivalents and Restricted Cash$1,301  $836  $15  $264  

(a)Bank deposits and other cash equivalents that are restricted by agreement or that have been clearly designated for a specific purpose are classified as restricted cash. On the Balance Sheets, the current portion of restricted cash is included in "Other current assets," while the noncurrent portion is included in "Other noncurrent assets."
PPL Electric Utilities Corp [Member]  
Summary Of Significant Accounting Policies [Line Items]  
Reconciliation of Cash, Cash Equivalents and Restricted Cash from the Balance Sheet to Cash Flow Statement
The following provides a reconciliation of Cash, Cash Equivalents and Restricted Cash reported within the Balance Sheets that sum to the total of the same amounts shown on the Statements of Cash Flows:
PPLPPL Electric
June 30,
2020		December 31,
2019		June 30,
2020		December 31,
2019
Cash and cash equivalents$1,278  $815  $13  $262  
Restricted cash - current (a)3  3  2  2  
Restricted cash - noncurrent (a)20  18  —  —  
Total Cash, Cash Equivalents and Restricted Cash$1,301  $836  $15  $264  

(a)Bank deposits and other cash equivalents that are restricted by agreement or that have been clearly designated for a specific purpose are classified as restricted cash. On the Balance Sheets, the current portion of restricted cash is included in "Other current assets," while the noncurrent portion is included in "Other noncurrent assets."