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Financing Activities - Credit Arrangements (Details) - USD ($) $ in Millions | Jan. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Commercial Paper [Member] |  |  |
Financing Activities [Line Items] |  |  |
Commercial paper issuances |  | $ 993 | $ 987
PPL Capital Funding [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 1,450 |
Borrowed |  | 0 | 0
Letters of credit and commercial paper issued |  | 403 | 619
Unused capacity |  | 1,047 |
PPL Capital Funding [Member] | Commercial Paper [Member] |  |  |
Financing Activities [Line Items] |  |  |
Commercial paper issuances |  | 365 | 561
PPL Capital Funding [Member] | Syndicated Credit Facility [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 1,250 |
Borrowed |  | 0 | 0
Letters of credit and commercial paper issued |  | 390 | 561
Unused capacity |  | $ 860 |
Maximum percentage of debt to total capitalization allowed under the credit facility |  | 70.00% |
Potential capacity increase |  | $ 250 |
Line of Credit Facility, Borrowing Capacity Sublimit |  | 1,000 |
PPL Capital Funding [Member] | Syndicated Credit Facility [Member] | Commercial Paper [Member] |  |  |
Financing Activities [Line Items] |  |  |
Commercial paper issuances |  | 365 |
PPL Capital Funding [Member] | Syndicated Credit Facility [Member] | Subsequent Event [Member] |  |  |
Financing Activities [Line Items] |  |  |
Line of Credit Facility, Borrowing Capacity Sublimit | $ 850 |  |
PPL Capital Funding [Member] | Bilateral Credit Facility [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 100 |
Borrowed |  | 0 | 0
Letters of credit and commercial paper issued |  | 0 | 0
Unused capacity |  | $ 100 |
Maximum percentage of debt to total capitalization allowed under the credit facility |  | 70.00% |
Potential capacity increase |  | $ 30 |
PPL Capital Funding [Member] | Bilateral Credit Facility |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 100 |
Borrowed |  | 0 | 0
Letters of credit and commercial paper issued |  | 13 | 58
Unused capacity |  | $ 87 |
Maximum percentage of debt to total capitalization allowed under the credit facility |  | 70.00% |
PPL Electric [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | $ 650 |
Borrowed |  | 0 | 250
Letters of credit and commercial paper issued |  | 511 | 146
Unused capacity |  | 139 |
PPL Electric [Member] | Commercial Paper [Member] |  |  |
Financing Activities [Line Items] |  |  |
Commercial paper issuances |  | 510 | 145
PPL Electric [Member] | Syndicated Credit Facility [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 650 |
Borrowed |  | 0 | 0
Letters of credit and commercial paper issued |  | 511 | 146
Unused capacity |  | $ 139 |
Maximum percentage of debt to total capitalization allowed under the credit facility |  | 70.00% |
Potential capacity increase |  | $ 250 |
PPL Electric [Member] | Term Loan Credit Facility [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 0 |
Borrowed |  | 0 | 250
Letters of credit and commercial paper issued |  | 0 | 0
Unused capacity |  | $ 0 |
Maximum percentage of debt to total capitalization allowed under the credit facility |  | 70.00% |
LGE [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | $ 500 |
Borrowed |  | 0 | 300
Letters of credit and commercial paper issued |  | 0 | 180
Unused capacity |  | 500 |
LGE [Member] | Commercial Paper [Member] |  |  |
Financing Activities [Line Items] |  |  |
Commercial paper issuances |  | 0 | 180
LGE [Member] | Syndicated Credit Facility [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 500 |
Borrowed |  | 0 | 0
Letters of credit and commercial paper issued |  | 0 | 180
Unused capacity |  | $ 500 |
Maximum percentage of debt to total capitalization allowed under the credit facility |  | 70.00% |
Potential capacity increase |  | $ 250 |
LGE [Member] | Term Loan Credit Facility [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 0 |
Borrowed |  | 0 | 300
Letters of credit and commercial paper issued |  | 0 | 0
Unused capacity |  | $ 0 |
Maximum percentage of debt to total capitalization allowed under the credit facility |  | 70.00% |
KU [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | $ 400 |
Borrowed |  | 0 | 300
Letters of credit and commercial paper issued |  | 93 | 101
Unused capacity |  | 307 |
KU [Member] | Commercial Paper [Member] |  |  |
Financing Activities [Line Items] |  |  |
Commercial paper issuances |  | 93 | 101
KU [Member] | Syndicated Credit Facility [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 400 |
Borrowed |  | 0 | 0
Letters of credit and commercial paper issued |  | 93 | 101
Unused capacity |  | $ 307 |
Maximum percentage of debt to total capitalization allowed under the credit facility |  | 70.00% |
Potential capacity increase |  | $ 250 |
KU [Member] | Term Loan Credit Facility [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 0 |
Borrowed |  | 0 | 300
Letters of credit and commercial paper issued |  | 0 | 0
Unused capacity |  | $ 0 |
Maximum percentage of debt to total capitalization allowed under the credit facility |  | 70.00% |
Rhode Island Energy | Commercial Paper [Member] |  |  |
Financing Activities [Line Items] |  |  |
Commercial paper issuances |  | $ 25 |
Rhode Island Energy | Syndicated Credit Facility [Member] |  |  |
Financing Activities [Line Items] |  |  |
Line of Credit Facility, Borrowing Capacity Sublimit |  | 250 |
Rhode Island Energy | Syndicated Credit Facility [Member] | Commercial Paper [Member] |  |  |
Financing Activities [Line Items] |  |  |
Commercial paper issuances |  | 25 |
Rhode Island Energy | Syndicated Credit Facility [Member] | Subsequent Event [Member] |  |  |
Financing Activities [Line Items] |  |  |
Line of Credit Facility, Borrowing Capacity Sublimit | $ 400 |  |
PPL Electric Utilities Corp [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 650 |
Borrowed |  | 0 | 250
Letters of credit and commercial paper issued |  | 511 | 146
Unused capacity |  | 139 |
PPL Electric Utilities Corp [Member] | Commercial Paper [Member] |  |  |
Financing Activities [Line Items] |  |  |
Commercial paper issuances |  | 510 | 145
PPL Electric Utilities Corp [Member] | Syndicated Credit Facility [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 650 |
Borrowed |  | 0 | 0
Letters of credit and commercial paper issued |  | 511 | 146
Unused capacity |  | $ 139 |
Maximum percentage of debt to total capitalization allowed under the credit facility |  | 70.00% |
Potential capacity increase |  | $ 250 |
PPL Electric Utilities Corp [Member] | Term Loan Credit Facility [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 0 |
Borrowed |  | 0 | 250
Letters of credit and commercial paper issued |  | 0 | 0
Unused capacity |  | $ 0 |
Maximum percentage of debt to total capitalization allowed under the credit facility |  | 70.00% |
Louisville Gas And Electric Co [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | $ 500 |
Borrowed |  | 0 | 300
Letters of credit and commercial paper issued |  | 0 | 180
Unused capacity |  | 500 |
Louisville Gas And Electric Co [Member] | Commercial Paper [Member] |  |  |
Financing Activities [Line Items] |  |  |
Commercial paper issuances |  | 0 | 180
Louisville Gas And Electric Co [Member] | Syndicated Credit Facility [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 500 |
Borrowed |  | 0 | 0
Letters of credit and commercial paper issued |  | 0 | 180
Unused capacity |  | $ 500 |
Maximum percentage of debt to total capitalization allowed under the credit facility |  | 70.00% |
Potential capacity increase |  | $ 250 |
Louisville Gas And Electric Co [Member] | Term Loan Credit Facility [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 0 |
Borrowed |  | 0 | 300
Letters of credit and commercial paper issued |  | 0 | 0
Unused capacity |  | $ 0 |
Maximum percentage of debt to total capitalization allowed under the credit facility |  | 70.00% |
Kentucky Utilities Co [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | $ 400 |
Borrowed |  | 0 | 300
Letters of credit and commercial paper issued |  | 93 | 101
Unused capacity |  | 307 |
Kentucky Utilities Co [Member] | Commercial Paper [Member] |  |  |
Financing Activities [Line Items] |  |  |
Commercial paper issuances |  | 93 | 101
Kentucky Utilities Co [Member] | Syndicated Credit Facility [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 400 |
Borrowed |  | 0 | 0
Letters of credit and commercial paper issued |  | 93 | 101
Unused capacity |  | $ 307 |
Maximum percentage of debt to total capitalization allowed under the credit facility |  | 70.00% |
Potential capacity increase |  | $ 250 |
Kentucky Utilities Co [Member] | Term Loan Credit Facility [Member] |  |  |
Financing Activities [Line Items] |  |  |
Capacity |  | 0 |
Borrowed |  | 0 | 300
Letters of credit and commercial paper issued |  | 0 | $ 0
Unused capacity |  | $ 0 |
Maximum percentage of debt to total capitalization allowed under the credit facility |  | 70.00% |

X
- Definition Aggregate amount of letters of credit issued under a credit facility as of the balance-sheet date, if applicable and inclusion of amounts issued under separate commercial paper program that reduces this facilities capacity. + References No definition available. + Details
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- Definition Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days. + References Reference 1: 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)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 2: 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(13)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(a)(3)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + 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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