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Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2021
Commitments And Contingencies [Line Items]  
Unrecorded Unconditional Purchase Obligations LG&E and KU enter into purchase contracts to supply the coal and natural gas requirements for generation facilities and LG&E's retail natural gas supply operations. These contracts include the following commitments:
Contract TypeMaximum Maturity
Date
Natural Gas Fuel2024
Natural Gas Retail Supply2023
Coal2026
Coal Transportation and Fleeting Services2027
Natural Gas Transportation2026
Future obligations for power purchases from OVEC are demand payments, comprised of debt-service payments and contractually-required reimbursements of plant operating, maintenance and other expenses, and are projected as follows:
 LG&EKUTotal
2022$23 $10 $33 
202323 10 33 
202422 10 32 
202522 10 32 
202622 10 32 
Thereafter218 96 314 
Total$330 $146 $476 

LG&E and KU had total energy purchases under the OVEC power purchase agreement for the years ended December 31 as follows:
 202120202019
LG&E$13 $12 $15 
KU6 6 7 
Total$19 $18 $22 
Guarantees The table below details guarantees provided as of December 31, 2021.
Exposure at December 31, 2021Expiration
Date
PPL   
Indemnifications related to the sale of the U.K. utility business
(a)
Indemnifications related to certain tax liabilities related to the sale of the U.K. utility business £50 (b)2028
LG&E and KU   
LG&E and KU obligation of shortfall related to OVEC (c) 

(a)PPL WPD Limited agreed to provide a standard indemnity regarding “leakage” amounts, which included amounts taken out of the sold assets through dividends, return of capital, bonuses or similar method, received or waived by WPD (or its affiliates defined as members of the Sellers Group in the SPA) during the period from April 1, 2020 through June 14, 2021, except such amounts permitted under the WPD SPA. The amount of the cap on this indemnity was £7,881 million, the amount paid to PPL WPD Limited at closing. This indemnification expired in December 2021 and no claims have been made.
(b)PPL WPD Limited entered into a Tax Deed dated June 9, 2021 in which it agreed to a tax indemnity regarding certain potential tax liabilities of the entities sold with respect to periods prior to the completion of the sale, subject to customary exclusions and limitations. Because National Grid Holdings
One plc, the buyer, agreed to purchase indemnity insurance, the amount of the cap on the indemnity for these liabilities is £1, except with respect to certain surrenders of tax losses, for which the amount of the cap on the indemnity is £50 million.
(c)Pursuant to the OVEC power purchase contract, LG&E and KU are obligated to pay for their share of OVEC's excess debt service, post-retirement and decommissioning costs, as well as any shortfall from amounts included within a demand charge designed and expected to cover these costs over the term of the contract. PPL's proportionate share of OVEC's outstanding debt was $92 million at December 31, 2021, consisting of LG&E's share of $64 million and KU's share of $28 million. The maximum exposure and the expiration date of these potential obligations are not presently determinable. See "Energy Purchase Commitments" above for additional information on the OVEC power purchase contract.

In March 2018, a sponsor with a 4.85% pro-rata share of OVEC obligations filed for bankruptcy under Chapter 11 and, in August 2018, received a rejection order for the OVEC power purchase contract in the bankruptcy proceeding. OVEC and other entities challenged the contract rejection, the bankruptcy plan confirmation and regulatory aspects of the plan in various forums. In May 2020, OVEC and the relevant sponsor announced a settlement resolving all disputed matters in the bankruptcy and other proceedings, including providing that the sponsor will withdraw its request to reject the power purchase agreement. The settlement was implemented in July 2020.
Louisville Gas And Electric Co [Member]  
Commitments And Contingencies [Line Items]  
Unrecorded Unconditional Purchase Obligations LG&E and KU enter into purchase contracts to supply the coal and natural gas requirements for generation facilities and LG&E's retail natural gas supply operations. These contracts include the following commitments:
Contract TypeMaximum Maturity
Date
Natural Gas Fuel2024
Natural Gas Retail Supply2023
Coal2026
Coal Transportation and Fleeting Services2027
Natural Gas Transportation2026
Future obligations for power purchases from OVEC are demand payments, comprised of debt-service payments and contractually-required reimbursements of plant operating, maintenance and other expenses, and are projected as follows:
 LG&EKUTotal
2022$23 $10 $33 
202323 10 33 
202422 10 32 
202522 10 32 
202622 10 32 
Thereafter218 96 314 
Total$330 $146 $476 

LG&E and KU had total energy purchases under the OVEC power purchase agreement for the years ended December 31 as follows:
 202120202019
LG&E$13 $12 $15 
KU6 6 7 
Total$19 $18 $22 
Kentucky Utilities Co [Member]  
Commitments And Contingencies [Line Items]  
Unrecorded Unconditional Purchase Obligations LG&E and KU enter into purchase contracts to supply the coal and natural gas requirements for generation facilities and LG&E's retail natural gas supply operations. These contracts include the following commitments:
Contract TypeMaximum Maturity
Date
Natural Gas Fuel2024
Natural Gas Retail Supply2023
Coal2026
Coal Transportation and Fleeting Services2027
Natural Gas Transportation2026
Future obligations for power purchases from OVEC are demand payments, comprised of debt-service payments and contractually-required reimbursements of plant operating, maintenance and other expenses, and are projected as follows:
 LG&EKUTotal
2022$23 $10 $33 
202323 10 33 
202422 10 32 
202522 10 32 
202622 10 32 
Thereafter218 96 314 
Total$330 $146 $476 

LG&E and KU had total energy purchases under the OVEC power purchase agreement for the years ended December 31 as follows:
 202120202019
LG&E$13 $12 $15 
KU6 6 7 
Total$19 $18 $22