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Revenue from Contracts with Customers (Tables)
 6 Months Ended
Jun. 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 June 30.
2022 Three Months
PPLPPL ElectricLG&EKU
Operating Revenues (a)$1,696 $676 $410 $491 
   Revenues derived from:
Alternative revenue programs (b)(40)(23)3 1 
Other (c)(6)(3)(2)(2)
Revenues from Contracts with Customers$1,650 $650 $411 $490 
2021 Three Months
PPLPPL ElectricLG&EKU
Operating Revenues (a)$1,288 $537 $342 $411 
   Revenues derived from:
Alternative revenue programs (b)19 24 (1)(4)
Other (c)(5)— (2)(3)
Revenues from Contracts with Customers$1,302 $561 $339 $404 
2022 Six Months
PPLPPL ElectricLG&EKU
Operating Revenues (a)$3,478 $1,451 $903 $1,016 
   Revenues derived from:
Alternative revenue programs (b)(67)(59)9 4 
Other (c)(13)(7)(4)(3)
Revenues from Contracts with Customers$3,398 $1,385 $908 $1,017 
2021 Six Months
PPLPPL ElectricLG&EKU
Operating Revenues (a)$2,786 $1,142 $770 $880 
   Revenues derived from:
Alternative revenue programs (b)43 46 (1)(2)
Other (c)(11)— (5)(6)
Revenues from Contracts with Customers$2,818 $1,188 $764 $872 

(a)PPL includes $128 million for the three and six months ended June 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 three and six months ended June 30, 2022, include $30 million and $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 six months ended June 30, 2021, included a $24 million and $51 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 June 30.
Three Months
ResidentialCommercialIndustrialOther (a)Wholesale - municipalityWholesale - other (b)TransmissionRevenues from Contracts with Customers
PPL
2022
PA Regulated$329 $117 $30 $14 $— $— $160 $650 
KY Regulated339 251 167 93 8 26 — 884 
RI Regulated31 12 1 47 — — 16 107 
Corp and Other— — — 9 — — — 9 
Total PPL$699 $380 $198 $163 $8 $26 $176 $1,650 
2021
PA Regulated$279 $83 $13 $13 $— $— $173 $561 
KY Regulated288 214 141 70 5 13 — 731 
RI Regulated— — — — — — — — 
Corp and Other— — — 10 — — — 10 
Total PPL$567 $297 $154 $93 $5 $13 $173 $1,302 
PPL Electric
2022$329 $117 $30 $14 $— $— $160 $650 
2021$279 $83 $13 $13 $— $— $173 $561 
LG&E
2022$169 $124 $49 $47 $— $22 $— $411 
2021$144 $107 $43 $31 $— $14 $— $339 
KU
2022$170 $127 $118 $45 $8 $22 $— $490 
2021$144 $107 $98 $39 $5 $11 $— $404 

Six Months
ResidentialCommercialIndustrialOther (a)Wholesale - municipalityWholesale - other (b)TransmissionRevenues from Contracts with Customers
PPL
2022
PA Regulated$782 $225 $45 $26 $— $— $307 $1,385 
KY Regulated817 521 321 176 14 45 — 1,894 
RI Regulated31 12 1 47 — — 16 107 
Corp and Other— — — 12 — — — 12 
Total PPL$1,630 $758 $367 $261 $14 $45 $323 $3,398 
2021
PA Regulated$640 $165 $25 $25 $— $— $333 $1,188 
KY Regulated701 445 281 141 11 33 — 1,612 
RI Regulated— — — — — — — — 
Corp and Other— — — 18 — — — 18 
Total PPL$1,341 $610 $306 $184 $11 $33 $333 $2,818 
Six Months
ResidentialCommercialIndustrialOther (a)Wholesale - municipalityWholesale - other (b)TransmissionRevenues from Contracts with Customers
PPL Electric
2022$782 $225 $45 $26 $— $— $307 $1,385 
2021$640 $165 $25 $25 $— $— $333 $1,188 
LG&E
2022$415 $270 $94 $86 $— $43 $— $908 
2021$349 $228 $89 $65 $— $33 $— $764 
KU
2022$402 $251 $227 $89 $14 $34 $— $1,017 
2021$352 $217 $192 $76 $11 $24 $— $872 

(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 June 30.
Three MonthsSix Months
2022202120222021
PPL$25 $— $33 $2 
PPL Electric— — 5 1 
LG&E1 — 2 — 
KU1 — 2 1 
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 June 30, 2022
33 16 6 5 
Revenue recognized during the six months ended June 30, 2022 that was included in the contract liability balance at December 31, 2021
24 12 6 6 
Contract liabilities at December 31, 2020
$40 $23 $5 $6 
Contract liabilities at June 30, 2021
31 16 5 5 
Revenue recognized during the six months ended June 30, 2021 that was included in the contract liability balance at December 31, 2020
23 11 5 6