Name:	ppl_AmountAgreedToFundInEnvironmentalEnhancementProjects
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The number of miles surrounding the plant that a class of plaintiffs could include in a class action suit.

No definition available.

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Data Type:	num:lengthItemType
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Number of plaintiffs that have filed claims pertaining to a loss contingency at the Can Run plant.

No definition available.

Name:	ppl_CaneRunPlantNumberOfPlaintiffsFiledSuit
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The number of Clean Air Act violation claims that remains unresolved after a July 2014 court ruling.

No definition available.

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Data Type:	xbrli:integerItemType
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- References

No definition available.

Name:	ppl_EnergyPurchaseCommitmentsLineItems
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- References

No definition available.

Name:	ppl_EnergyPurchaseCommitmentsNumericAbstract
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The number of coal-fired generating units retired at the Cane Run plant.

No definition available.

Name:	ppl_GeneratingUnitsRetiredPlantOne
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Data Type:	xbrli:integerItemType
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- References

No definition available.

Name:	ppl_LegalMattersCaneRunEnvironmentalClaimsNumericAbstract
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Legal Matters - Mill Creek Environmental Claims (Numeric) [Abstract]

No definition available.

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Period when purchase commitment is set to mature.

No definition available.

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Namespace Prefix:	ppl_
Data Type:	xbrli:gYearItemType
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Date of contract expiration of long-term contract to purchase electricity from a production plant, in CCYY-MM-DD format.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 10.D)
-URI http://asc.fasb.org/extlink&oid=6499423&loc=d3e659339-123030

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=73718637&loc=d3e25336-109308

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

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Data Type:	xbrli:monetaryItemType
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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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.

No definition available.

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Data Type:	xbrli:stringItemType
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The amount purchased during the period under an unrecorded unconditional purchase obligation (for example, under the take-or-pay or throughput contract).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=73718637&loc=d3e25336-109308

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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

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Namespace Prefix:
Data Type:	na
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Name:	ppl_PurchaseCommitmentsAxis=ppl_CoalPurchaseContractsMember
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Namespace Prefix:
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