Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

The high end of the range of time remaining until maturity when a range is presented for a group of derivatives.

+ References

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The low end of the range of time remaining until maturity when a range is presented for a group of derivatives.

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- Definition

Disclosure of an assertion that the amount of net gain (loss) reclassified into earnings in the period when cash flow hedge is discontinued because it is probable that the original forecasted transactions will not occur by the end of the original period or an additional two month time period is insignificant or none.

+ References

No definition available.

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- Definition

Disclosure of an assertion that the estimated net amount of unrealized gains (losses) on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months is insignificant or none.

+ References

No definition available.

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- Definition

Maximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments.

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No definition available.

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- Definition

The maximum maturity date for interest rate swap contracts hedging interest payments on variable rate debt classifed as economic activity.

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- Definition

The latest termination date of foreign currency contracts classified as economic activity outstanding.

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The earliest termination date of foreign currency contracts for anticipated earnings hedges classified as economic activity outstanding.

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- Definition

Total exposure hedged through a combination of average rate forwards and average rate options foreign currency contracts for anticipated earnings hedges classified as economic activity.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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Disclosure of an assertion that the amount of interest rate cash flow hedge ineffectiveness is immaterial.

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- Definition

Current period adjustment in other comprehensive income reflecting gains or losses on foreign currency transactions that are designated as, and are effective as, hedges of a net investment in a foreign entity, net of tax effect.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32211-110900

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

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Derivative Instruments and Hedging Activities (Risk Disclosures) (Details) £ in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Mar. 31, 2016 GBP (£)	Mar. 31, 2016 USD ($)
Cash Flow Hedges [Member] \| Interest Rate Swap Contracts [Member]
Interest Rate Risk And Foreign Currency Risk [Line Items]
Notional amount				$ 300
Interest Rate Risk - Cash Flow Hedges (Numeric) [Abstract]
Year of expiration of the maximum maturity date of interest rate cash flow hedge contracts	2026
Insignificant or no hedge ineffectiveness associated with interest rate cash flow hedges	For the three months ended March 31, 2016 and 2015, PPL had no hedge ineffectiveness associated with interest rate derivatives.
No or insignificant after-tax gains (losses) previously recorded in AOCI reclassified to earnings related to interest rate cash flow hedge contracts	For the three months ended March 31, 2016, PPL had an insignificant amount of cash flow hedges reclassified into earnings associated with discontinued cash flow hedges and no cash flow hedges reclassified into earnings associated with discontinued cash flow hedges for the three months ended March 31, 2015.
No or insignificant unrealized after-tax gains (losses) on interest rate cash flow hedge contracts expected to be reclassified into earnings during next 12 months	At March 31, 2016, the accumulated net unrecognized after-tax gains (losses) on qualifying derivatives that are expected to be reclassified into earnings during the next 12 months were insignificant.
Cash Flow Hedges [Member] \| Cross Currency Interest Rate Swaps [Member]
Interest Rate Risk And Foreign Currency Risk [Line Items]
Notional amount				1,300
Interest Rate Risk - Cash Flow Hedges (Numeric) [Abstract]
Latest maturity date of cross-currency cash flow hedge contracts	2028
Earliest maturity date of cross-currency cash flow hedge contracts	2016
Economic Hedges [Member] \| Interest Rate Swap Contracts [Member]
Interest Rate Risk And Foreign Currency Risk [Line Items]
Notional amount				179
Interest Rate Risk - Economic Activity (Numeric) [Abstract]
Year of expiration of the maximum maturity date of interest rate economic activity contracts	2033
Economic Hedges [Member] \| Foreign Currency Contracts [Member]
Foreign Currency Risk - Economic Activity (Numeric) [Abstract]
Total exposure hedged related to foreign currency contracts for anticipated earnings hedges classified as economic activity			£ 2,000	3,100
Earliest termination date of foreign currency contracts for anticipated earnings hedges classified as economic activity	April 2016
Latest termination date of foreign currency contracts for anticipated earnings hedges classified as economic activity	November 2018
Net Investment Hedges [Member] \| Foreign Currency Contracts [Member]
Interest Rate Risk And Foreign Currency Risk [Line Items]
Notional amount			£ 116	180
Foreign Currency Risk - Economic Activity (Numeric) [Abstract]
Earliest termination date of foreign currency contracts for anticipated earnings hedges classified as economic activity	April 2016
Latest termination date of foreign currency contracts for anticipated earnings hedges classified as economic activity	June 2016
Net Investment Hedges [Member] \| Combined Foreign Currency Contracts And Intercompany Loans [Member]
Foreign Currency Risk - Net Investment Hedges (Numeric) [Abstract]
Net after tax gains (losses) on net investment hedges recognized in the foreign currency translation adjustment component of AOCI	$ 21	$ 19
PPL Electric Utilities Corp [Member] \| First Mortgage Bond [Member]
Interest Rate Risk - Cash Flow Hedges (Numeric) [Abstract]
Principal amount				224
LG And E And KU Energy LLC [Member] \| Economic Hedges [Member] \| Interest Rate Swap Contracts [Member]
Interest Rate Risk And Foreign Currency Risk [Line Items]
Notional amount				179
Interest Rate Risk - Economic Activity (Numeric) [Abstract]
Year of expiration of the maximum maturity date of interest rate economic activity contracts	2033
Louisville Gas And Electric Co [Member] \| Economic Hedges [Member] \| Interest Rate Swap Contracts [Member]
Interest Rate Risk And Foreign Currency Risk [Line Items]
Notional amount				$ 179
Interest Rate Risk - Economic Activity (Numeric) [Abstract]
Year of expiration of the maximum maturity date of interest rate economic activity contracts	2033