XML 130 R61.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Revenue from Contracts with Customers (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 USD ($) Days | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Revenue from contracts with customers [Line Items] |  |  |  |
Operating Revenues | $ 5,783 | $ 5,474 | $ 5,602 |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |
Alternative Revenue Programs | 77 | (24) | (30) |
Other Revenue | (22) | (21) | (31) |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 5,838 | 5,429 | 5,541 |
Credit loss from contract with customer [Abstract] |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 22 | 25 | 27 |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |
Contract with Customer, Liability | 42 | 40 | 37 | $ 40
Contract with Customer, Liability, Revenue Recognized | 24 | 22 | 25 |
Residential [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 2,715 | 2,585 | 2,610 |
Commercial [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 1,278 | 1,185 | 1,257 |
Industrial [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 639 | 582 | 621 |
Other [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 386 | 347 | 367 |
Wholesale Municipal [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 24 | 20 | 43 |
Wholesale Other [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 66 | 40 | 49 |
Transmission [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 730 | 670 | 594 |
Pennsylvania Regulated [Member] |  |  |  |
Revenue from contracts with customers [Line Items] |  |  |  |
Operating Revenues | $ 2,402 | 2,330 | 2,358 |
Number Of Days Due From Invoice Date | Days | 21 |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | $ 2,482 | 2,316 | 2,342 |
Pennsylvania Regulated [Member] | Residential [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 1,299 | 1,238 | 1,288 |
Pennsylvania Regulated [Member] | Commercial [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 350 | 314 | 349 |
Pennsylvania Regulated [Member] | Industrial [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 53 | 44 | 59 |
Pennsylvania Regulated [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 50 | 50 | 52 |
Pennsylvania Regulated [Member] | Wholesale Municipal [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0 |
Pennsylvania Regulated [Member] | Wholesale Other [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0 |
Pennsylvania Regulated [Member] | Transmission [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 730 | 670 | 594 |
Kentucky Regulated [Member] |  |  |  |
Revenue from contracts with customers [Line Items] |  |  |  |
Operating Revenues | $ 3,348 | 3,106 | 3,206 |
Number Of Days Due From Invoice Date | Days | 22 |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | $ 3,325 | 3,077 | 3,161 |
Kentucky Regulated [Member] | Residential [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 1,416 | 1,347 | 1,322 |
Kentucky Regulated [Member] | Commercial [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 928 | 871 | 908 |
Kentucky Regulated [Member] | Industrial [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 586 | 538 | 562 |
Kentucky Regulated [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 305 | 261 | 277 |
Kentucky Regulated [Member] | Wholesale Municipal [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 24 | 20 | 43 |
Kentucky Regulated [Member] | Wholesale Other [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 66 | 40 | 49 |
Kentucky Regulated [Member] | Transmission [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0 |
Corporate Segment [Member] |  |  |  |
Revenue from contracts with customers [Line Items] |  |  |  |
Operating Revenues | 33 | 38 | 38 |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 31 | 36 | 38 |
Corporate Segment [Member] | Residential [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0 |
Corporate Segment [Member] | Commercial [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0 |
Corporate Segment [Member] | Industrial [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0 |
Corporate Segment [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 31 | 36 | 38 |
Corporate Segment [Member] | Wholesale Municipal [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0 |
Corporate Segment [Member] | Wholesale Other [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0 |
Corporate Segment [Member] | Transmission [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | $ 0 | 0 | 0 |
PPL Electric [Member] |  |  |  |
Revenue from contracts with customers [Line Items] |  |  |  |
Number Of Days Due From Invoice Date | Days | 21 |  |  |
LGE [Member] |  |  |  |
Revenue from contracts with customers [Line Items] |  |  |  |
Number Of Days Due From Invoice Date | Days | 22 |  |  |
KU [Member] |  |  |  |
Revenue from contracts with customers [Line Items] |  |  |  |
Number Of Days Due From Invoice Date | Days | 22 |  |  |
PPL Electric Utilities Corp [Member] |  |  |  |
Revenue from contracts with customers [Line Items] |  |  |  |
Operating Revenues | $ 2,402 | 2,331 | 2,358 |
Number Of Days Due From Invoice Date | Days | 21 |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |
Alternative Revenue Programs | $ 83 | (12) | (6) |
Other Revenue | (3) | (3) | (10) |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 2,482 | 2,316 | 2,342 |
Credit loss from contract with customer [Abstract] |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 10 | 17 | 21 |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |
Contract with Customer, Liability | 25 | 23 | 21 | 23
Contract with Customer, Liability, Revenue Recognized | 11 | 9 | 11 |
Revenue Reserve for ROE Challenge | 78 |  |  |
PPL Electric Utilities Corp [Member] | Residential [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 1,299 | 1,238 | 1,288 |
PPL Electric Utilities Corp [Member] | Commercial [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 350 | 314 | 349 |
PPL Electric Utilities Corp [Member] | Industrial [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 53 | 44 | 59 |
PPL Electric Utilities Corp [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 50 | 50 | 52 |
PPL Electric Utilities Corp [Member] | Wholesale Municipal [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0 |
PPL Electric Utilities Corp [Member] | Wholesale Other [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0 |
PPL Electric Utilities Corp [Member] | Transmission [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 730 | 670 | 594 |
Louisville Gas And Electric Co [Member] |  |  |  |
Revenue from contracts with customers [Line Items] |  |  |  |
Operating Revenues | $ 1,569 | 1,456 | 1,500 |
Number Of Days Due From Invoice Date | Days | 22 |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |
Alternative Revenue Programs | $ (3) | (8) | (10) |
Other Revenue | (8) | (7) | (9) |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 1,558 | 1,441 | 1,481 |
Credit loss from contract with customer [Abstract] |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 4 | 4 | 2 |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |
Contract with Customer, Liability | 6 | 5 | 5 | 5
Contract with Customer, Liability, Revenue Recognized | 5 | 5 | 5 |
Louisville Gas And Electric Co [Member] | Residential [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 711 | 676 | 668 |
Louisville Gas And Electric Co [Member] | Commercial [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 473 | 444 | 466 |
Louisville Gas And Electric Co [Member] | Industrial [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 180 | 173 | 180 |
Louisville Gas And Electric Co [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 145 | 114 | 121 |
Louisville Gas And Electric Co [Member] | Wholesale Municipal [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0 |
Louisville Gas And Electric Co [Member] | Wholesale Other [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 49 | 34 | 46 |
Louisville Gas And Electric Co [Member] | Transmission [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0 |
Kentucky Utilities Co [Member] |  |  |  |
Revenue from contracts with customers [Line Items] |  |  |  |
Operating Revenues | $ 1,826 | 1,690 | 1,740 |
Number Of Days Due From Invoice Date | Days | 22 |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |
Alternative Revenue Programs | $ (3) | (4) | (14) |
Other Revenue | (9) | (10) | (12) |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 1,814 | 1,676 | 1,714 |
Credit loss from contract with customer [Abstract] |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 8 | 4 | 4 |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |
Contract with Customer, Liability | 6 | 6 | 4 | $ 4
Contract with Customer, Liability, Revenue Recognized | 6 | 4 | 4 |
Kentucky Utilities Co [Member] | Residential [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 705 | 671 | 654 |
Kentucky Utilities Co [Member] | Commercial [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 455 | 427 | 442 |
Kentucky Utilities Co [Member] | Industrial [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 406 | 365 | 382 |
Kentucky Utilities Co [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 160 | 147 | 156 |
Kentucky Utilities Co [Member] | Wholesale Municipal [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 24 | 20 | 43 |
Kentucky Utilities Co [Member] | Wholesale Other [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | 64 | 46 | 37 |
Kentucky Utilities Co [Member] | Transmission [Member] |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |
Revenue from Contracts with Customers | $ 0 | $ 0 | $ 0 |

X
- Definition Programs that enable the utility to adjust future rates (usually as a surcharge applied to future billings) in response to past activities or completed events. + References No definition available. + Details
Name: | ppl_AlternativeRevenuePrograms
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Credit loss from contract with customer [Abstract] + References No definition available. + Details
Name: | ppl_CreditlossfromcontractwithcustomerAbstract
Namespace Prefix: | ppl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Typical number of days outstanding amounts for services rendered are due from the invoice date. + References No definition available. + Details
Name: | ppl_NumberOfDaysDueFromInvoiceDate
Namespace Prefix: | ppl_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Additional revenues outside the scope of revenues from contracts with customers - which could include, but doesn't have to include leases, late charges, returned checks or other miscellaneous revenues. + References No definition available. + Details
Name: | ppl_OtherRevenue
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Reconciliation of revenue from contacts with customers [Abstract] + References No definition available. + Details
Name: | ppl_ReconciliationofrevenuefromcontactswithcustomersAbstract
Namespace Prefix: | ppl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of revenue reserve recorded as a result of a challenge to the transmission formula rate return on equity. + References No definition available. + Details
Name: | ppl_RevenueReserveForROEChallenge
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition [Line Items] for Revenue from contracts with customers [Table] + References No definition available. + Details
Name: | ppl_RevenuefromcontractswithcustomersLineItems
Namespace Prefix: | ppl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ContractWithCustomerAssetAndLiabilityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130532-203044 + Details
Name: | us-gaap_ContractWithCustomerLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045 + Details
Name: | us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisaggregationOfRevenueAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(5)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
Name: | us-gaap_ProvisionForDoubtfulAccounts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(A)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)(A)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756 Reference 17: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599 Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-05(b)(2)) -URI http://asc.fasb.org/extlink&oid=120399901&loc=d3e537907-122884 Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(B)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756 Reference 22: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(ii)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756 Reference 23: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_MajorCustomersAxis=ppl_ResidentialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=ppl_CommercialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=ppl_IndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=ppl_OtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=ppl_WholesaleMunicipalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=ppl_WholesaleOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=ppl_TransmissionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ppl_PennsylvaniaRegulatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ppl_KentuckyRegulatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_CorporateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_ByCompanyAxis=ppl_PplElectricUtilitiesCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_ByCompanyAxis=ppl_LouisvilleGasAndElectricCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_ByCompanyAxis=ppl_KentuckyUtilitiesCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=ppl_PplElectricUtilitiesCorpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=ppl_LouisvilleGasAndElectricCoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=ppl_KentuckyUtilitiesCoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |