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Revenue from Contracts with Customers (Tables)
 9 Months Ended
Sep. 30, 2022
Revenue from Contracts with Customers [Line Items]  
Reconciliation of Revenue from Contracts with Customers [Table Text Block]
The following tables reconcile "Operating Revenues" included in each Registrant's Statement of Income with revenues generated from contracts with customers for the periods ended September 30.
2022 Three Months
PPLPPL ElectricLG&EKU
Operating Revenues (a)$2,134 $766 $436 $553 
   Revenues derived from:
Alternative revenue programs (b)51 3 3 1 
Other (c)(8)(4)(1)(2)
Revenues from Contracts with Customers$2,177 $765 $438 $552 
2021 Three Months
PPLPPL ElectricLG&EKU
Operating Revenues (a)$1,512 $627 $395 $494 
   Revenues derived from:
Alternative revenue programs (b)19 22 (1)(2)
Other (c)(4)— (2)(2)
Revenues from Contracts with Customers$1,527 $649 $392 $490 
2022 Nine Months
PPLPPL ElectricLG&EKU
Operating Revenues (a)$5,612 $2,217 $1,339 $1,569 
   Revenues derived from:
Alternative revenue programs (b)(16)(56)12 5 
Other (c)(21)(11)(5)(3)
Revenues from Contracts with Customers$5,575 $2,150 $1,346 $1,571 
2021 Nine Months
PPLPPL ElectricLG&EKU
Operating Revenues (a)$4,298 $1,769 $1,165 $1,374 
   Revenues derived from:
Alternative revenue programs (b)62 68 (2)(4)
Other (c)(15)— (7)(8)
Revenues from Contracts with Customers$4,345 $1,837 $1,156 $1,362 

(a)PPL includes $384 million and $512 million for the three and nine months ended September 30, 2022 of revenues from external customers reported by the Rhode Island Regulated segment. PPL Electric represents revenues from external customers reported by the Pennsylvania Regulated segment and LG&E and KU, net of intercompany power sales and transmission revenues, represent revenues from external customers reported by the Kentucky Regulated segment. See Note 2 for additional information.
(b)This line item shows the over/under collection of rate mechanisms deemed alternative revenue programs with over-collections of revenue shown as positive amounts in the table above and under-collections shown as negative amounts. For PPL Electric, the nine months ended September 30, 2022, includes $74 million related to the amortization of the regulatory liability primarily recorded in 2021 for a reduction in the transmission formula rate return on equity that is reflected in rates in 2022. The three and nine months ended September 30, 2021, included a $13 million and $64 million revenue reduction recorded as a result of the challenge to the transmission formula rate return on equity. See Note 6 for additional information.
(c)Represents additional revenues outside the scope of revenues from contracts with customers, such as lease and other miscellaneous revenues.
Disaggregation of Revenue [Table Text Block]
The following tables show revenues from contracts with customers disaggregated by customer class for the periods ended September 30.
Three Months
ResidentialCommercialIndustrialOther (a)Wholesale - municipalityWholesale - other (b)TransmissionRevenues from Contracts with Customers
PPL
2022
PA Regulated$407 $135 $22 $13 $— $— $188 $765 
KY Regulated401 284 176 88 8 21 — 978 
RI Regulated100 34 3 251 — — 39 427 
Corp and Other— — — 7 — — — 7 
Total PPL$908 $453 $201 $359 $8 $21 $227 $2,177 
2021
PA Regulated$324 $95 $14 $13 $— $— $203 $649 
KY Regulated360 250 154 81 7 20 — 872 
RI Regulated— — — — — — — — 
Corp and Other— — — 6 — — — 6 
Total PPL$684 $345 $168 $100 $7 $20 $203 $1,527 
PPL Electric
2022$407 $135 $22 $13 $— $— $188 $765 
2021$324 $95 $14 $13 $— $— $203 $649 
LG&E
2022$200 $140 $53 $39 $— $6 $— $438 
2021$180 $123 $46 $37 $— $6 $— $392 
KU
2022$201 $144 $123 $51 $8 $25 $— $552 
2021$180 $127 $108 $44 $7 $24 $— $490 

Nine Months
ResidentialCommercialIndustrialOther (a)Wholesale - municipalityWholesale - other (b)TransmissionRevenues from Contracts with Customers
PPL
2022
PA Regulated$1,189 $360 $67 $39 $— $— $495 $2,150 
KY Regulated1,218 805 497 264 22 66 — 2,872 
RI Regulated131 46 4 298 — — 55 534 
Corp and Other— — — 19 — — — 19 
Total PPL$2,538 $1,211 $568 $620 $22 $66 $550 $5,575 
2021
PA Regulated$964 $260 $39 $38 $— $— $536 $1,837 
KY Regulated1,061 695 435 222 18 53 — 2,484 
RI Regulated— — — — — — — — 
Corp and Other— — — 24 — — — 24 
Total PPL$2,025 $955 $474 $284 $18 $53 $536 $4,345 
Nine Months
ResidentialCommercialIndustrialOther (a)Wholesale - municipalityWholesale - other (b)TransmissionRevenues from Contracts with Customers
PPL Electric
2022$1,189 $360 $67 $39 $— $— $495 $2,150 
2021$964 $260 $39 $38 $— $— $536 $1,837 
LG&E
2022$615 $410 $147 $125 $— $49 $— $1,346 
2021$529 $351 $135 $102 $— $39 $— $1,156 
KU
2022$603 $395 $350 $140 $22 $61 $— $1,571 
2021$532 $344 $300 $120 $18 $48 $— $1,362 

(a)Primarily includes revenues from pole attachments, street lighting, other public authorities and other non-core businesses. The Rhode Island Regulated segment also includes open access revenues.
(b)Includes wholesale power and transmission revenues. LG&E and KU amounts include intercompany power sales and transmission revenues, which are eliminated upon consolidation at the Kentucky Regulated segment.
Credit Loss Recognized from Contracts with Customers [Table Text Block]
The following table shows the accounts receivable and unbilled revenues balances that were impaired for the periods ended September 30.
Three MonthsNine Months
2022202120222021
PPL (a)$21 $7 $55 $9 
PPL Electric7 3 12 4 
LG&E2 1 4 1 
KU3 3 5 4 

(a)Includes $3 million and $26 million for the three and nine months ended September 30, 2022 related to the commitment to forgive customer arrearages for low income and protected residential customers at RIE. See Note 8 for additional information.
Contract with Customer, Asset and Liability [Table Text Block]
The following table shows the balances and certain activity of contract liabilities resulting from contracts with customers.
PPLPPL ElectricLG&EKU
Contract liabilities at December 31, 2021
$42 $25 $6 $6 
Contract liabilities at September 30, 2022
35 18 6 6 
Revenue recognized during the nine months ended September 30, 2022 that was included in the contract liability balance at December 31, 2021
25 12 6 6 
Contract liabilities at December 31, 2020
$40 $23 $5 $6 
Contract liabilities at September 30, 2021
37 21 6 6 
Revenue recognized during the nine months ended September 30, 2021 that was included in the contract liability balance at December 31, 2020
24 11 5 6