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Financing Activities - Credit Arrangements (Details) - USD ($) $ in Millions | Jul. 14, 2025 | Jun. 30, 2025 | Jan. 01, 2025 | Dec. 31, 2024
--- | --- | --- | --- | ---
Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Commercial Paper Issuances (d) |  | $ 1,288 |  | $ 303
Capacity (c) |  | 3,150 |  |
PPL Capital Funding [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 1,700 |  |
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 490 |  | 153
Unused Capacity |  | 1,210 |  |
PPL Capital Funding [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Commercial Paper Issuances (d) |  | 470 |  | 138
Capacity (c) |  | 1,350 |  |
PPL Capital Funding [Member] | Subsequent Event [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity (c) | $ 1,600 |  |  |
PPL Capital Funding [Member] | Syndicated Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 1,500 | $ 1,500 | 1,250
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 470 |  | 138
Unused Capacity |  | 1,030 |  |
Line of Credit Facility, Borrowing Capacity Sublimit |  | 1,250 |  | 1,000
PPL Capital Funding [Member] | Syndicated Credit Facility [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Commercial Paper Issuances (d) |  | 470 |  | 138
PPL Capital Funding [Member] | Bilateral Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 100 |  |
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 20 |  | 15
Unused Capacity |  | 80 |  |
PPL Capital Funding [Member] | Bilateral Credit Facility #2 |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 100 |  |
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 0 |  | 0
Unused Capacity |  | 100 |  |
PPL Electric [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 750 |  |
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 386 |  | 1
Unused Capacity |  | 364 |  |
PPL Electric [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Commercial Paper Issuances (d) |  | 385 |  | 0
Capacity (c) |  | 650 |  |
PPL Electric [Member] | Subsequent Event [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity (c) | 750 |  |  |
PPL Electric [Member] | Syndicated Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 750 | 750 | 650
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 386 |  | 1
Unused Capacity |  | 364 |  |
LGE [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 600 |  |
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 158 |  | 25
Unused Capacity |  | 442 |  |
LGE [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Commercial Paper Issuances (d) |  | 158 |  | 25
Capacity (c) |  | 500 |  |
LGE [Member] | Subsequent Event [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity (c) | 600 |  |  |
LGE [Member] | Syndicated Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 600 | 600 | 500
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 158 |  | 25
Unused Capacity |  | 442 |  |
KU [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 600 |  |
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 275 |  | 140
Unused Capacity |  | 325 |  |
KU [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Commercial Paper Issuances (d) |  | 275 |  | 140
Capacity (c) |  | 400 |  |
KU [Member] | Subsequent Event [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity (c) | 600 |  |  |
KU [Member] | Syndicated Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 600 | 600 | 400
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 275 |  | 140
Unused Capacity |  | 325 |  |
Rhode Island Energy | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Commercial Paper Issuances (d) |  | 0 |  | 0
Capacity (c) |  | 250 |  |
Rhode Island Energy | Syndicated Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of Credit Facility, Borrowing Capacity Sublimit |  | 250 |  | 250
Line of Credit Facility, Borrowing Capacity Sublimit, Maximum |  | 600 |  |
Rhode Island Energy | Syndicated Credit Facility [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Commercial Paper Issuances (d) |  | 0 |  | 0
PPL Electric Utilities Corp [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 750 |  |
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 386 |  | 1
Unused Capacity |  | 364 |  |
PPL Electric Utilities Corp [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Commercial Paper Issuances (d) |  | 385 |  | 0
Capacity (c) |  | 650 |  |
PPL Electric Utilities Corp [Member] | Subsequent Event [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity (c) | 750 |  |  |
PPL Electric Utilities Corp [Member] | Syndicated Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 750 | 750 | 650
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 386 |  | 1
Unused Capacity |  | 364 |  |
Louisville Gas And Electric Co [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 600 |  |
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 158 |  | 25
Unused Capacity |  | 442 |  |
Louisville Gas And Electric Co [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Commercial Paper Issuances (d) |  | 158 |  | 25
Capacity (c) |  | 500 |  |
Louisville Gas And Electric Co [Member] | Subsequent Event [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity (c) | 600 |  |  |
Louisville Gas And Electric Co [Member] | Syndicated Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 600 | 600 | 500
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 158 |  | 25
Unused Capacity |  | 442 |  |
Kentucky Utilities Co [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 600 |  |
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 275 |  | 140
Unused Capacity |  | 325 |  |
Kentucky Utilities Co [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Commercial Paper Issuances (d) |  | 275 |  | 140
Capacity (c) |  | 400 |  |
Kentucky Utilities Co [Member] | Subsequent Event [Member] | Commercial Paper [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity (c) | $ 600 |  |  |
Kentucky Utilities Co [Member] | Syndicated Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Capacity |  | 600 | $ 600 | 400
Borrowed |  | 0 |  | 0
Letters of Credit and Commercial Paper Issued (c) |  | 275 |  | $ 140
Unused Capacity |  | $ 325 |  |

X
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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/1943274/2147478777/944-210-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/1943274/2147478546/942-210-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://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/1943274/2147478546/942-210-S99-1 Reference 3: 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/1943274/2147478777/944-210-S99-1 + Details
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