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Financing Activities - Long-term Debt (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2023 | Feb. 28, 2023 | Sep. 30, 2023 | Dec. 31, 2022
Long-term Debt (Numeric) [Abstract] |  |  |  |
Long-term debt due within one year |  |  | $ 91 | $ 354
Long-term Debt, Excluding Current Maturities |  |  | 14,484 | 12,889
Exchangeable Senior Unsecured Notes | Exchangeable Senior Notes Due 2028 |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Principal amount |  | $ 1,000 |  |
Stated interest rate |  | 2.875% |  |
Exchangeable Senior Notes Initial Exchange Rate, Shares per $1000 Principal Amount |  | 29.3432 |  |
Exchangeable Senior Notes Initial Exchange Rate, Dollars per Share |  | $ 34.08 |  |
Proceeds from Convertible Debt |  | $ 980 |  |
PPL Electric [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity |  |  | 650 |
Borrowed |  |  | 0 | 250
PPL Electric [Member] | Term Loan Facility [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity |  |  | 0 |
Borrowed |  |  | 0 | 250
PPL Electric [Member] | Term Loan Facility [Member] | Repayment |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity | $ 250 |  |  |
PPL Electric [Member] | First Mortgage Bond [Member] | First Mortgage Bonds, Floating Rate Series due 2023 [Member] | Bond Redemption [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Principal amount | 250 |  |  |
PPL Electric [Member] | First Mortgage Bond [Member] | First Mortgage Bonds, Floating Rate Series due 2024 | Bond Redemption [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Principal amount | 650 |  |  |
PPL Electric [Member] | First Mortgage Bond [Member] | First Mortgage Bonds Due 2033 |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Principal amount | $ 600 |  |  |
Stated interest rate | 5.00% |  |  |
PPL Electric [Member] | First Mortgage Bond [Member] | First Mortgage Bonds Due 2053 |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Principal amount | $ 750 |  |  |
Stated interest rate | 5.25% |  |  |
PPL Electric [Member] | First Mortgage Bond [Member] | First Mortgage Bonds Due 2033 and 2053 |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Proceeds from Issuance of First Mortgage Bond | $ 1,320 |  |  |
PPL Capital Funding [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity |  |  | 1,450 |
Borrowed |  |  | 0 | 0
LGE [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity |  |  | 500 |
Borrowed |  |  | 0 | 300
LGE [Member] | Term Loan Facility [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity |  |  | 0 |
Borrowed |  |  | 0 | 300
LGE [Member] | Term Loan Facility [Member] | Repayment |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity | 300 |  |  |
LGE [Member] | First Mortgage Bond [Member] | First Mortgage Bonds Due 2033 |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Principal amount | $ 400 |  |  |
Stated interest rate | 5.45% |  |  |
Proceeds from Issuance of First Mortgage Bond | $ 396 |  |  |
KU [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity |  |  | 400 |
Borrowed |  |  | 0 | 300
KU [Member] | Term Loan Facility [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity |  |  | 0 |
Borrowed |  |  | 0 | 300
KU [Member] | Term Loan Facility [Member] | Repayment |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity | 300 |  |  |
KU [Member] | First Mortgage Bond [Member] | First Mortgage Bonds Due 2033 |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Principal amount | $ 400 |  |  |
Stated interest rate | 5.45% |  |  |
Proceeds from Issuance of First Mortgage Bond | $ 396 |  |  |
PPL Electric Utilities Corp [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity |  |  | 650 |
Borrowed |  |  | 0 | 250
Long-term debt due within one year |  |  | 90 | 340
Long-term Debt, Excluding Current Maturities |  |  | 4,566 | 4,146
PPL Electric Utilities Corp [Member] | Term Loan Facility [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity |  |  | 0 |
Borrowed |  |  | 0 | 250
PPL Electric Utilities Corp [Member] | Term Loan Facility [Member] | Repayment |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity | 250 |  |  |
PPL Electric Utilities Corp [Member] | First Mortgage Bond [Member] | First Mortgage Bonds, Floating Rate Series due 2023 [Member] | Bond Redemption [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Principal amount | 250 |  |  |
PPL Electric Utilities Corp [Member] | First Mortgage Bond [Member] | First Mortgage Bonds, Floating Rate Series due 2024 | Bond Redemption [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Principal amount | 650 |  |  |
PPL Electric Utilities Corp [Member] | First Mortgage Bond [Member] | First Mortgage Bonds Due 2033 |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Principal amount | $ 600 |  |  |
Stated interest rate | 5.00% |  |  |
PPL Electric Utilities Corp [Member] | First Mortgage Bond [Member] | First Mortgage Bonds Due 2053 |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Principal amount | $ 750 |  |  |
Stated interest rate | 5.25% |  |  |
PPL Electric Utilities Corp [Member] | First Mortgage Bond [Member] | First Mortgage Bonds Due 2033 and 2053 |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Proceeds from Issuance of First Mortgage Bond | $ 1,320 |  |  |
Louisville Gas And Electric Co [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity |  |  | 500 |
Borrowed |  |  | 0 | 300
Long-term Debt, Excluding Current Maturities |  |  | 2,404 | 2,307
Louisville Gas And Electric Co [Member] | Term Loan Facility [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity |  |  | 0 |
Borrowed |  |  | 0 | 300
Louisville Gas And Electric Co [Member] | Term Loan Facility [Member] | Repayment |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity | 300 |  |  |
Louisville Gas And Electric Co [Member] | First Mortgage Bond [Member] | First Mortgage Bonds Due 2033 |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Principal amount | $ 400 |  |  |
Stated interest rate | 5.45% |  |  |
Proceeds from Issuance of First Mortgage Bond | $ 396 |  |  |
Kentucky Utilities Co [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity |  |  | 400 |
Borrowed |  |  | 0 | 300
Long-term debt due within one year |  |  | 0 | 13
Long-term Debt, Excluding Current Maturities |  |  | 3,004 | 2,907
Kentucky Utilities Co [Member] | Term Loan Facility [Member] |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity |  |  | 0 |
Borrowed |  |  | $ 0 | $ 300
Kentucky Utilities Co [Member] | Term Loan Facility [Member] | Repayment |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Capacity | 300 |  |  |
Kentucky Utilities Co [Member] | First Mortgage Bond [Member] | First Mortgage Bonds Due 2033 |  |  |  |
Long-term Debt (Numeric) [Abstract] |  |  |  |
Principal amount | $ 400 |  |  |
Stated interest rate | 5.45% |  |  |
Proceeds from Issuance of First Mortgage Bond | $ 396 |  |  |

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482900/835-30-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482925/835-30-45-2 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482949/835-30-55-8 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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