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Related Party Transactions (Tables)
 12 Months Ended
Dec. 31, 2021
PPL Electric Utilities Corp [Member]  
Related Party Transactions [Line Items]  
Intercompany Support Cost Allocations PPL Services, PPL EU Services and LKS charged the following amounts for the years ended December 31, including amounts applied to accounts that are further distributed between capital and expense on the books of the recipients, based on methods that are believed to be reasonable.
 202120202019
PPL Electric from PPL Services$54 $50 $59 
PPL Electric from PPL EU Services222 176 152 
LG&E from LKS169 170 160 
KU from LKS179 180 178 
Louisville Gas And Electric Co [Member]  
Related Party Transactions [Line Items]  
Intercompany Support Cost Allocations PPL Services, PPL EU Services and LKS charged the following amounts for the years ended December 31, including amounts applied to accounts that are further distributed between capital and expense on the books of the recipients, based on methods that are believed to be reasonable.
 202120202019
PPL Electric from PPL Services$54 $50 $59 
PPL Electric from PPL EU Services222 176 152 
LG&E from LKS169 170 160 
KU from LKS179 180 178 
Kentucky Utilities Co [Member]  
Related Party Transactions [Line Items]  
Intercompany Support Cost Allocations PPL Services, PPL EU Services and LKS charged the following amounts for the years ended December 31, including amounts applied to accounts that are further distributed between capital and expense on the books of the recipients, based on methods that are believed to be reasonable.
 202120202019
PPL Electric from PPL Services$54 $50 $59 
PPL Electric from PPL EU Services222 176 152 
LG&E from LKS169 170 160 
KU from LKS179 180 178