Derivative Instruments and Hedging Activities (Commodity Volumes) (Details)
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Mar. 31, 2014
MWh
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Sales Contracts [Member] | Power [Member] | 2014 [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 27,112,584 | [1],[2] | ||||
Sales Contracts [Member] | Power [Member] | 2015 [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 28,794,377 | [1] | ||||
Sales Contracts [Member] | Capacity [Member] | 2014 [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 14,918 | [1],[2] | ||||
Sales Contracts [Member] | Capacity [Member] | 2015 [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 5,120 | [1] | ||||
Purchase Contracts [Member] | Power [Member] | 2016 [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 3,496,447 | [1] | ||||
Purchase Contracts [Member] | Power [Member] | Thereafter [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 14,130,735 | [1] | ||||
Purchase Contracts [Member] | Capacity [Member] | 2016 [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 501 | [1] | ||||
Purchase Contracts [Member] | Capacity [Member] | Thereafter [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 9 | [1] | ||||
Purchase Contracts [Member] | Gas [Member] | 2014 [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 63,248,020 | [1],[2] | ||||
Purchase Contracts [Member] | Gas [Member] | 2015 [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 14,120,116 | [1] | ||||
Purchase Contracts [Member] | Gas [Member] | 2016 [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 57,884,707 | [1] | ||||
Purchase Contracts [Member] | Gas [Member] | Thereafter [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 25,814,197 | [1] | ||||
Purchase Contracts [Member] | Coal [Member] | 2014 [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 25,000 | [1],[2] | ||||
Purchase Contracts [Member] | Financial Transmission Rights [Member] | 2014 [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 4,734 | [1],[2] | ||||
Purchase Contracts [Member] | Financial Transmission Rights [Member] | 2015 [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 1,705 | [1] | ||||
Purchase Contracts [Member] | Oil [Member] | 2014 [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 156,000 | [1],[2] | ||||
Purchase Contracts [Member] | Oil [Member] | 2015 [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 436,233 | [1] | ||||
Purchase Contracts [Member] | Oil [Member] | 2016 [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 331,258 | [1] | ||||
Purchase Contracts [Member] | Oil [Member] | Thereafter [Member]
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||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 279,060 | [1] | ||||
PPL Energy Supply LLC [Member] | Sales Contracts [Member] | Power [Member] | 2014 [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 27,112,584 | [1],[2] | ||||
PPL Energy Supply LLC [Member] | Sales Contracts [Member] | Power [Member] | 2015 [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 28,794,377 | [1] | ||||
PPL Energy Supply LLC [Member] | Sales Contracts [Member] | Capacity [Member] | 2014 [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 14,918 | [1],[2] | ||||
PPL Energy Supply LLC [Member] | Sales Contracts [Member] | Capacity [Member] | 2015 [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 5,120 | [1] | ||||
PPL Energy Supply LLC [Member] | Purchase Contracts [Member] | Power [Member] | 2016 [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 3,496,447 | [1] | ||||
PPL Energy Supply LLC [Member] | Purchase Contracts [Member] | Power [Member] | Thereafter [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 14,130,735 | [1] | ||||
PPL Energy Supply LLC [Member] | Purchase Contracts [Member] | Capacity [Member] | 2016 [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 501 | [1] | ||||
PPL Energy Supply LLC [Member] | Purchase Contracts [Member] | Capacity [Member] | Thereafter [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 9 | [1] | ||||
PPL Energy Supply LLC [Member] | Purchase Contracts [Member] | Gas [Member] | 2014 [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 63,248,020 | [1],[2] | ||||
PPL Energy Supply LLC [Member] | Purchase Contracts [Member] | Gas [Member] | 2015 [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 14,120,116 | [1] | ||||
PPL Energy Supply LLC [Member] | Purchase Contracts [Member] | Gas [Member] | 2016 [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 57,884,707 | [1] | ||||
PPL Energy Supply LLC [Member] | Purchase Contracts [Member] | Gas [Member] | Thereafter [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 25,814,197 | [1] | ||||
PPL Energy Supply LLC [Member] | Purchase Contracts [Member] | Coal [Member] | 2014 [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 25,000 | [1],[2] | ||||
PPL Energy Supply LLC [Member] | Purchase Contracts [Member] | Financial Transmission Rights [Member] | 2014 [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 4,734 | [1],[2] | ||||
PPL Energy Supply LLC [Member] | Purchase Contracts [Member] | Financial Transmission Rights [Member] | 2015 [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 1,705 | [1] | ||||
PPL Energy Supply LLC [Member] | Purchase Contracts [Member] | Oil [Member] | 2014 [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 156,000 | [1],[2] | ||||
PPL Energy Supply LLC [Member] | Purchase Contracts [Member] | Oil [Member] | 2015 [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 436,233 | [1] | ||||
PPL Energy Supply LLC [Member] | Purchase Contracts [Member] | Oil [Member] | 2016 [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 331,258 | [1] | ||||
PPL Energy Supply LLC [Member] | Purchase Contracts [Member] | Oil [Member] | Thereafter [Member]
|
||||||
Commodity Volumetric Activity [Line Items] | ||||||
Notional amount (in units) | 279,060 | [1] | ||||
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