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Goodwill and Other Intangible Assets (Other Intangibles - Indefinite-Lived) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Not subject to amortization due to indefinite life: [Line Items]      
Gross carrying amount $ 18 $ 17  
Gross carrying amount - other intangible assets 571 565  
Intangible assets with no regulatory offset [Member]      
Not subject to amortization due to indefinite life: [Line Items]      
Amortization expense 5 5 $ 9
Land Rights and Easements [Member]      
Not subject to amortization due to indefinite life: [Line Items]      
Gross carrying amount 18 17  
PPL Electric Utilities Corp [Member]      
Not subject to amortization due to indefinite life: [Line Items]      
Gross carrying amount - other intangible assets 408 404  
PPL Electric Utilities Corp [Member] | Intangible assets with no regulatory offset [Member]      
Not subject to amortization due to indefinite life: [Line Items]      
Amortization expense 4 4 4
PPL Electric Utilities Corp [Member] | Land Rights and Easements [Member]      
Not subject to amortization due to indefinite life: [Line Items]      
Gross carrying amount 17 17  
Kentucky Utilities Co [Member] | Intangible assets with no regulatory offset [Member]      
Not subject to amortization due to indefinite life: [Line Items]      
Amortization expense $ 0 $ 0 $ 1