The amount of the cap on an indemnity with respect to certain surrenders of tax losses.

No definition available.

Name:	ppl_IndemnificationCapSurrendersOfTaxLosses
Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum aggregate insurance coverage for liability assumed under contract for bodily injury and property damage.

+ References

No definition available.

+ Details

Name:	ppl_MaximumAggregateCoverageBodilyInjuryAndPropertyDamage
Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

Name:	ppl_OtherGuaranteeNumericAbstract
Namespace Prefix:	ppl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Entity's contingent proportionate share of OVEC's outstanding debt.

+ References

No definition available.

+ Details

Name:	ppl_ProportionateShareOfOhioValleyElectricCorporationOutstandingDebt
Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_GuaranteeObligationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248

+ Details

Name:	us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	ppl_GuaranteeByEntityAxis=ppl_PplGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_GuaranteeObligationsByNatureAxis=us-gaap_IndemnificationGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ppl_GuaranteeByDescriptionAxis=ppl_IndemnificationsRelatedToTheSaleOfTheUKUtilityBusinessDomain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ppl_GuaranteeByDescriptionAxis=ppl_IndemnificationsRelatedToCertainTaxLiabilitiesRelatedToTheSaleOfTheUKUtilityBusinessDomain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ppl_GuaranteeByEntityAxis=ppl_LouisvilleGasAndElectricCompanyAndKentuckyUtilitiesGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_GuaranteeObligationsByNatureAxis=us-gaap_FinancialGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ppl_GuaranteeByDescriptionAxis=ppl_GuaranteeForShortfallRelatedToOhioValleyElectricCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=ppl_LouisvilleGasAndElectricCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=ppl_KentuckyUtilitiesCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ppl_ByCompanyAxis=ppl_LouisvilleGasAndElectricCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ppl_ByCompanyAxis=ppl_KentuckyUtilitiesCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitments and Contingencies (Guarantees and Other Assurances) (Details) - Dec. 31, 2021 £ in Millions, $ in Millions	USD ($)	GBP (£)
Other Guarantee (Numeric) [Abstract]
Maximum aggregate coverage bodily injury and property damage	$ 225
Indemnification Cap, Surrenders of Tax Losses \| £		£ 50
PPL Guarantee [Member] \| Indemnification Guarantee [Member] \| Indemnifications related to the sale of the U.K. utility business [Domain]
Guarantor Obligations [Line Items]
Maximum exposure \| £		£ 7,881
PPL Guarantee [Member] \| Indemnification Guarantee [Member] \| Indemnifications related to certain tax liabilities related to the sale of the U.K. utility business [Domain]
Guarantor Obligations [Line Items]
Maximum exposure	50
LGE And KU Guarantee [Member] \| Financial Guarantee [Member] \| LGE And KU Guarantee Of Shortfall Related To OVEC [Member]
Guarantor Obligations [Line Items]
Contingent potential proportionate share of OVEC's outstanding debt	92
Louisville Gas And Electric Co [Member] \| LGE And KU Guarantee [Member] \| Financial Guarantee [Member] \| LGE And KU Guarantee Of Shortfall Related To OVEC [Member]
Guarantor Obligations [Line Items]
Contingent potential proportionate share of OVEC's outstanding debt	64
Kentucky Utilities Co [Member] \| LGE And KU Guarantee [Member] \| Financial Guarantee [Member] \| LGE And KU Guarantee Of Shortfall Related To OVEC [Member]
Guarantor Obligations [Line Items]
Contingent potential proportionate share of OVEC's outstanding debt	28
LGE [Member] \| LGE And KU Guarantee [Member] \| Financial Guarantee [Member] \| LGE And KU Guarantee Of Shortfall Related To OVEC [Member]
Guarantor Obligations [Line Items]
Contingent potential proportionate share of OVEC's outstanding debt	64
KU [Member] \| LGE And KU Guarantee [Member] \| Financial Guarantee [Member] \| LGE And KU Guarantee Of Shortfall Related To OVEC [Member]
Guarantor Obligations [Line Items]
Contingent potential proportionate share of OVEC's outstanding debt	$ 28