XML 137 R90.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Derivative Instruments and Hedging Activities (Intro) (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Master Netting Arrangements (Numeric) [Line Items] |  |
Cash Collateral Obligation Under Master Netting Arrangement | $ 20 | $ 19
Cash Collateral Posted Under Master Netting Arrangements | 0 | 3
LG And E And KU Energy LLC [Member] |  |
Master Netting Arrangements (Numeric) [Line Items] |  |
Cash Collateral Obligation Under Master Netting Arrangement | 0 | 0
Cash Collateral Posted Under Master Netting Arrangements | 0 | 3
Louisville Gas And Electric Co [Member] |  |
Master Netting Arrangements (Numeric) [Line Items] |  |
Cash Collateral Obligation Under Master Netting Arrangement | 0 | 0
Cash Collateral Posted Under Master Netting Arrangements | 0 | 3
Kentucky Utilities Co [Member] |  |
Master Netting Arrangements (Numeric) [Line Items] |  |
Cash Collateral Obligation Under Master Netting Arrangement | 0 | 0
Cash Collateral Posted Under Master Netting Arrangements | $ 0 | $ 0

X
- Definition Obligation to return cash collateral received from counterparties under terms of master netting arrangements. + References No definition available. + Details
Name: | ppl_CashCollateralObligationUnderMasterNettingArrangement
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of cash collateral posted under master netting arrangements. + References No definition available. + Details
Name: | ppl_CashCollateralPostedUnderMasterNettingArrangements
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | dei_LegalEntityAxis=ppl_LGAndEAndKUEnergyLLCMember
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: |