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Commitments and Contingencies (Guarantees and Other Assurances) (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) Integer | Dec. 31, 2019 USD ($)
Guarantor Obligations [Line Items] |  |
Recorded liability for all guarantees | $ 5 | $ 5
Other Guarantee (Numeric) [Abstract] |  |
Maximum aggregate coverage bodily injury and property damage | 225 |
PPL Guarantee [Member] | Indemnification Guarantee [Member] | WPD Indemnifications For Entities In Liquidation Sales Of Assets [Member] |  |
Guarantor Obligations [Line Items] |  |
Maximum exposure | $ 11 |
Minimum period that indemnifications generally expire (in years) | Integer | 2 |
Maximum period that indemnifications generally expire (in years) | Integer | 7 |
PPL Guarantee [Member] | Financial Guarantee [Member] | WPD Guarantee Of Pension And Other Obligations Of Unconsolidated Entities [Member] |  |
Guarantor Obligations [Line Items] |  |
Maximum exposure | $ 95 |
LKE Guarantee [Member] | Indemnification Guarantee [Member] | Indemnification Of Lease Termination And Other Divestitures [Member] |  |
Guarantor Obligations [Line Items] |  |
Maximum exposure | $ 200 |
Term of guarantee (in years) | 12 years |
Maximum exposure of guarantee related to terminated lease specific to operational, regulatory and environmental issues | $ 200 |
LG And E And KU Energy LLC [Member] | Indemnification Guarantee [Member] | Indemnification Of Lease Termination And Other Divestitures [Member] |  |
Guarantor Obligations [Line Items] |  |
Maximum exposure | $ 200 |
Term of guarantee (in years) | 12 years |
Maximum exposure of guarantee related to terminated lease specific to operational, regulatory and environmental issues | $ 200 |
LG And E And KU Energy LLC [Member] | LGE And KU Guarantee [Member] | Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member] |  |
Guarantor Obligations [Line Items] |  |
Contingent potential proportionate share of OVEC's outstanding debt | 104 |
Louisville Gas And Electric Co [Member] | LGE And KU Guarantee [Member] | Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member] |  |
Guarantor Obligations [Line Items] |  |
Contingent potential proportionate share of OVEC's outstanding debt | 72 |
Kentucky Utilities Co [Member] | LGE And KU Guarantee [Member] | Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member] |  |
Guarantor Obligations [Line Items] |  |
Contingent potential proportionate share of OVEC's outstanding debt | $ 32 |
LGE and KU [Member] | LGE And KU Guarantee [Member] | Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member] |  |
Guarantor Obligations [Line Items] |  |
Maximum exposure is not estimateable | The maximum exposure and the expiration date of these potential obligations are not presently determinable. |
Contingent potential proportionate share of OVEC's outstanding debt | $ 104 |

X
- 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 maximum period, in years, that indemnifications related to the dissolution of entities generally expire after the date of dissolution. + References No definition available. + Details
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- Definition The minimum period, in years, that indemnifications related to the dissolution of entities generally expire after the date of dissolution. + 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 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248 + 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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