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Revenue from Contracts with Customers (Tables)
 9 Months Ended
Sep. 30, 2024
Revenue from Contracts with Customers [Line Items]  
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
2024
PA Regulated$367 $111 $12 $15 $— $— $204 $709 
KY Regulated378 268 161 76 7 20 — 910 
RI Regulated 112 38 5 251 — — 52 458 
Total PPL$857 $417 $178 $342 $7 $20 $256 $2,077 
2023
PA Regulated$389 $113 $13 $14 $— $— $202 $731 
KY Regulated367 260 162 79 6 17 — 891 
RI Regulated110 32 4 223 — — 47 416 
Total PPL$866 $405 $179 $316 $6 $17 $249 $2,038 
PPL Electric
2024$367 $111 $12 $15 $— $— $204 $709 
2023$389 $113 $13 $14 $— $— $202 $731 
LG&E
2024$190 $132 $48 $31 $— $6 $— $407 
2023$182 $127 $49 $33 $— $6 $— $397 
KU
2024$188 $136 $113 $45 $7 $26 $— $515 
2023$185 $133 $113 $45 $6 $21 $— $503 

Nine Months
ResidentialCommercialIndustrialOther (a)Wholesale - municipalityWholesale - other (b)TransmissionRevenues from Contracts with Customers
PPL
2024
PA Regulated$1,125 $318 $34 $43 $— $— $613 $2,133 
KY Regulated1,147 780 479 248 18 48 — 2,720 
RI Regulated 480 182 17 593 — — 128 1,400 
Corp and Other— — — 1 — — — 1 
Total PPL $2,752 $1,280 $530 $885 $18 $48 $741 $6,254 
2023
PA Regulated$1,266 $346 $44 $40 $— $— $593 $2,289 
KY Regulated1,108 771 486 205 17 37 — 2,624 
RI Regulated480 182 17 586 — — 128 1,393 
Total PPL$2,854 $1,299 $547 $831 $17 $37 $721 $6,306 
Nine Months
ResidentialCommercialIndustrialOther (a)Wholesale - municipalityWholesale - other (b)TransmissionRevenues from Contracts with Customers
PPL Electric
2024$1,125 $318 $34 $43 $— $— $613 $2,133 
2023$1,266 $346 $44 $40 $— $— $593 $2,289 
LG&E
2024$571 $391 $141 $114 $— $34 $— $1,251 
2023$574 $398 $145 $75 $— $33 $— $1,225 
KU
2024$576 $389 $338 $134 $18 $53 $— $1,508 
2023$534 $373 $341 $130 $17 $38 $— $1,433 

(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 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
2024202320242023
PPL (a)$28 $20 $72 $47 
PPL Electric (a)13 10 37 27 
LG&E1 2 2 3 
KU2 1 3 2 

(a)    For the nine months ended September 30, 2024, balances include amounts impaired related to PPL Electric's billing issues. See Note 6 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, 2023
$43 $29 $6 $7 
Contract liabilities at September 30, 2024
31 21 5 5 
Revenue recognized during the nine months ended September 30, 2024 that was included in the contract liability balance at December 31, 2023
26 12 6 7 
Contract liabilities at December 31, 2022
$34 $23 $5 $6 
Contract liabilities at September 30, 2023
33 21 5 6 
Revenue recognized during the nine months ended September 30, 2023 that was included in the contract liability balance at December 31, 2022
21 10 5 6