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Commitments and Contingencies - Guarantees and Other Assurances (Details) - 6 months ended Jun. 30, 2025 £ in Millions, $ in Millions | USD ($) | GBP (£) | USD ($)
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Other Guarantee (Numeric) [Abstract] |  |  |
Maximum aggregate coverage bodily injury and property damage |  |  | $ 231
Indemnification Cap, Surrenders of Tax Losses | £ |  | £ 50 |
Indemnification for Safari sale/leaseback | $ 25 |  |
Maximum Aggregate Coverage Bodily Injury And Property Damage, Wildfire |  |  | 181
Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member] | LGE [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Recorded liability for all guarantees |  |  | 51
Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member] | KU [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Recorded liability for all guarantees |  |  | 22
PPL Guarantee [Member] | Indemnification Guarantee [Member] | Indemnifications related to certain tax liabilities related to the sale of the U.K. utility business [Domain] |  |  |
Other Guarantee (Numeric) [Abstract] |  |  |
Maximum exposure | £ |  | £ 50 |
PPL Guarantee [Member] | Indemnification Guarantee [Member] | Guarantee of payment obligations under certain sale/leaseback financing transactions related to the sale of Safari Holdings |  |  |
Other Guarantee (Numeric) [Abstract] |  |  |
Maximum exposure |  |  | 88
PPL Guarantee [Member] | Indemnification Guarantee [Member] | Indemnifications for losses suffered related to items not covered by Aspen Power's representation and warranty insurance associated with the sale of Safari Holdings |  |  |
Other Guarantee (Numeric) [Abstract] |  |  |
Maximum exposure |  |  | 140
LKE Guarantee [Member] | Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Recorded liability for all guarantees |  |  | 73
Maximum exposure is not estimable | The maximum exposure and the expiration date of these potential obligations are not presently determinable. |  |
Louisville Gas And Electric Co [Member] | Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Recorded liability for all guarantees |  |  | 51
Maximum exposure is not estimable | The maximum exposure and the expiration date of these potential obligations are not presently determinable |  |
Kentucky Utilities Co [Member] | Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Recorded liability for all guarantees |  |  | $ 22
Maximum exposure is not estimable | The maximum exposure and the expiration date of these potential obligations are not presently determinable |  |

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- Definition The amount of the cap on an indemnity with respect to certain surrenders of tax losses. + References No definition available. + Details
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- Definition Indemnification for Safari sale/leaseback + References No definition available. + Details
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- Definition Maximum aggregate insurance coverage for liability assumed under contract for bodily injury and property damage not related to wildfires + References No definition available. + Details
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- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 + Details
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