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Commitments and Contingencies - Guarantees and Other Assurances (Details) - 6 months ended Jun. 30, 2021 £ in Millions, $ in Millions | USD ($) | GBP (£)
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Other Guarantee (Numeric) [Abstract] |  |
Maximum aggregate coverage bodily injury and property damage | $ 225 |
Indemnification Cap, Surrenders of Tax Losses | £ |  | £ 50
PPL Guarantee [Member] | Indemnification Guarantee [Member] | Indemnifications related to the sale of the U.K. utility business [Domain] |  |
Other Guarantee (Numeric) [Abstract] |  |
Maximum exposure | 7,881 |
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 |
LKE Guarantee [Member] | Indemnification Guarantee [Member] | Indemnification Of Lease Termination And Other Divestitures [Member] |  |
Guarantor Obligations [Line Items] |  |
Term of guarantee (in years) | 12 |
Maximum exposure of guarantee related to terminated lease specific to operational, regulatory and environmental issues | $ 200 |
Other Guarantee (Numeric) [Abstract] |  |
Maximum exposure | $ 200 |
LKE Guarantee [Member] | Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member] |  |
Guarantor Obligations [Line Items] |  |
Maximum exposure is not estimable | The maximum exposure and the expiration date of these potential obligations are not presently determinable. |
Contingent proportionate share of OVEC's outstanding debt | $ 97 |
Louisville Gas And Electric Co [Member] | Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member] |  |
Guarantor Obligations [Line Items] |  |
Maximum exposure is not estimable | The maximum exposure and the expiration date of these potential obligations are not presently determinable |
Contingent proportionate share of OVEC's outstanding debt | $ 67 |
Kentucky Utilities Co [Member] | Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member] |  |
Guarantor Obligations [Line Items] |  |
Maximum exposure is not estimable | The maximum exposure and the expiration date of these potential obligations are not presently determinable |
Contingent proportionate share of OVEC's outstanding debt | $ 30 |

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- Definition The maximum exposure of a guarantee related to the termination of a lease related to certain non-utility generating stations in western Kentucky until July 2009. This portion of the guarantee relates to covering operational, regulatory and environmental commitments and indemnifications made under the agreement. + References No definition available. + Details
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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 Maximum aggregate insurance coverage for liability assumed under contract for bodily injury and property damage. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Entity's contingent proportionate share of OVEC's outstanding debt. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248 + Details
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- Definition States the reasons why the guarantor is unable to develop an estimate of the maximum potential amount of future payments under its guarantee (or each group of similar guarantees). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248 + Details
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- Definition Describe the approximate term of the guarantee or each group of similar guarantees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248 + Details
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- Details
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- Details
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