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The net collateral obligation posted by a guarantor under the standard supply master agreement at the end of the period.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Maximum amount of credit before collateral must be posted by a guarantor under the standard supply master agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Costs billed to the company from a services affiliate. These costs include direct costs that are specifically related to the company or, for general costs that cannot be directly attributed, they are charged based on predetermined allocation factors and costs incurred where the service company has made a "convenience" payment on behalf of the company.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Details

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- Definition

Maximum loan capacity under the revolving demand note agreement with an affiliate of the reporting entity.

+ References

No definition available.

+ Details

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Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Details

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- Definition

Costs allocated to the company from a services affiliate. These costs include direct costs that are specifically related to the company or, for general costs that cannot be directly attributed, they are charged based on predetermined allocation factors.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

The amount for notes payable (written promise to pay), due to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Subparagraph a

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(k)(1))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(a)(5))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph k

-Subparagraph 1

-Article 4

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 57

-Paragraph 2

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties.

+ References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionRate
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Data Type:	num:percentItemType
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Related Party Transactions (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended							3 Months Ended
	Mar. 31, 2013 PPL Energy Supply LLC [Member] PPL Electric [Member]	Mar. 31, 2013 PPL Energy Supply LLC [Member] Services Company Affiliate [Member]	Mar. 31, 2012 PPL Energy Supply LLC [Member] Services Company Affiliate [Member]	Mar. 31, 2013 PPL Electric Utilities Corp [Member] Services Company Affiliate [Member]	Mar. 31, 2012 PPL Electric Utilities Corp [Member] Services Company Affiliate [Member]	Mar. 31, 2013 LG And E And KU Energy LLC [Member]	Dec. 31, 2012 LG And E And KU Energy LLC [Member]	Mar. 31, 2013 LG And E And KU Energy LLC [Member] Services Company Affiliate [Member]	Mar. 31, 2012 LG And E And KU Energy LLC [Member] Services Company Affiliate [Member]	Mar. 31, 2013 LG And E And KU Energy LLC [Member] PPL Energy Funding [Member]	Mar. 31, 2013 Louisville Gas And Electric Co [Member] Services Company Affiliate [Member]	Mar. 31, 2012 Louisville Gas And Electric Co [Member] Services Company Affiliate [Member]	Mar. 31, 2013 Kentucky Utilities Co [Member] Services Company Affiliate [Member]	Mar. 31, 2012 Kentucky Utilities Co [Member] Services Company Affiliate [Member]
PLR Contracts/Purchase of Accounts Receivable (Numeric) [Abstract]
Credit limit with affiliate under a Master Supply Agreement	$ 35
Credit exposure with affiliate under a Master Supply Agreement	23
Allocations of PPL Service Costs (Details) [Abstract]
Service cost allocations from parent to subsidiary		57	57	38	42			4	5
Intercompany Billings by LKS (Details) [Abstract]
Intercompany billings between affiliates											39	41	66	46
Intercompany Borrowings (Numeric) [Abstract]
Intercompany borrowings demand note rate on outstanding borrowing										1.70%
Notes payable to affiliates						85	25
Intercompany note with affiliate maximum borrowing capacity										$ 300