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Revenue from Contracts with Customers (Tables)
 12 Months Ended
Dec. 31, 2023
Revenue from contracts with customers [Line Items]  
Reconciliation of revenue from contracts with customers [Table Text Block]
The following table reconciles "Operating Revenues" included in each Registrant's Statement of Income with revenues generated from contracts with customers for the years ended December 31:
2023
PPLPPL ElectricLG&EKU
Operating Revenues (a)$8,312 $3,008 $1,613 $1,884 
Revenues derived from:
Alternative revenue programs (b)1 5 (1)(5)
Other (c)(23)(15)(4)(4)
Revenues from Contracts with Customers$8,290 $2,998 $1,608 $1,875 
2022
PPLPPL ElectricLG&EKU
Operating Revenues (a)$7,902 $3,030 $1,798 $2,074 
Revenues derived from:
Alternative revenue programs (b)(92)(56)9 5 
Other (c)(24)(14)(6)(4)
Revenues from Contracts with Customers$7,786 $2,960 $1,801 $2,075 
2021
PPLPPL ElectricLG&EKU
Operating Revenues (a)$5,783 $2,402 $1,569 $1,826 
Revenues derived from:
Alternative revenue programs (b)77 83 (3)(3)
Other (c)(22)(3)(8)(9)
Revenues from Contracts with Customers$5,838 $2,482 $1,558 $1,814 

(a)PPL includes $1,851 million and $1,038 million for the twelve months ended December 31, 2023 and 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 as negative amounts. For PPL Electric, revenue in 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. Revenue in 2021 was reduced by $78 million for a reduction in the transmission formula rate return on equity.
(c)Represents additional revenues outside the scope of revenues from contracts with customers such as leases and other miscellaneous revenues.
Disaggregation of Revenue [Table Text Block]
The following table shows revenues from contracts with customers disaggregated by customer class for the years ended December 31:
ResidentialCommercialIndustrialOther (a)Wholesale - municipalityWholesale - other (b)TransmissionRevenues from Contracts with Customers
PPL
2023
PA Regulated$1,649 $444 $55 $54 $— $— $796 $2,998 
RI Regulated640 228 20 793 — — 170 1,851 
KY Regulated1,458 1,001 637 272 22 50 — 3,440 
Corp and Other— — — 1 — — — 1 
Total PPL$3,747 $1,673 $712 $1,120 $22 $50 $966 $8,290 
2022
PA Regulated$1,647 $491 $85 $54 $— $— $683 $2,960 
RI Regulated299 101 9 478 — — 101 988 
KY Regulated1,637 1,068 662 323 28 97 — 3,815 
Corp and Other— — — 23 — — — 23 
Total PPL$3,583 $1,660 $756 $878 $28 $97 $784 $7,786 
2021
PA Regulated$1,299 $350 $53 $50 $— $— $730 $2,482 
RI Regulated— — — — — — — — 
KY Regulated1,416 928 586 305 24 66 — 3,325 
Corp and Other— — — 31 — — — 31 
Total PPL$2,715 $1,278 $639 $386 $24 $66 $730 $5,838 
PPL Electric
2023$1,649 $444 $55 $54 $— $— $796 $2,998 
2022$1,647 $491 $85 $54 $— $— $683 $2,960 
2021$1,299 $350 $53 $50 $— $— $730 $2,482 
LG&E
2023$751 $517 $189 $104 $— $47 $— $1,608 
2022$835 $551 $199 $141 $— $75 $— $1,801 
2021$711 $473 $180 $145 $— $49 $— $1,558 
KU
2023$707 $484 $448 $168 $22 $46 $— $1,875 
2022$802 $517 $463 $182 $28 $83 $— $2,075 
2021$705 $455 $406 $160 $24 $64 $— $1,814 

(a)Primarily includes revenues from pole attachments, street lighting, other public authorities and other non-core businesses. The Rhode Island Regulated segment primarily includes open access tariff revenues, which are calculated on combined customer classes.
(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 PPL.
Credit loss recognized from contract with customer [Table Text Block]
The following table shows the accounts receivable and unbilled revenues balances that were impaired for the year ended December 31:
202320222021
PPL(a)$79 $70 $22 
PPL Electric47 21 10 
LG&E4 6 4 
KU2 6 8 
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 as of December 31, 2023$43 $29 $6 $7 
Contract liabilities as of December 31, 202234 23 5 6 
Revenue recognized during the year ended December 31, 2023 that was included in the contract liability balance at December 31, 202221 10 5 6 
Contract liabilities as of December 31, 2022$34 $23 $5 $6 
Contract liabilities as of December 31, 202142 25 6 6 
Revenue recognized during the year ended December 31, 2022 that was included in the contract liability balance at December 31, 202125 12 6 6 
Contract liabilities as of December 31, 2021$42 $25 $6 $6 
Contract liabilities as of December 31, 202040 23 5 6 
Revenue recognized during the year ended December 31, 2021 that was included in the contract liability balance at December 31, 202024 11 5 6