Acquisitions, Development and Divestitures	12 Months Ended
Dec. 31, 2013
Acquisitions Development And Divestitures [Abstract]
Acquisitions, Development and Divestitures	8. Acquisitions, Development and Divestitures (All Registrants) The Registrants from time to time evaluate opportunities for potential acquisitions, divestitures and development projects. Development projects are reexamined based on market conditions and other factors to determine whether to proceed with the projects, sell, cancel or expand them, execute tolling agreements or pursue other options. Any resulting transactions may impact future financial results. See Note 9 for information on discontinued operations. See Note 10 for information on completed acquisitions. Development (PPL, LKE, LG&E and KU) Cane Run Unit 7 Construction In September 2011, LG&E and KU filed an application for a CPCN with the KPSC requesting approval to build Cane Run Unit 7. In May 2012, the KPSC issued an order approving the request. LG&E will own a 22% undivided interest, and KU will own a 78% undivided interest in the new NGCC generating unit. A formal request for recovery of the costs associated with the construction was not included in the CPCN application but certain Cane Run Unit 7 construction work in progress has been included in base rates and the remaining capital costs are expected to be included in future rate proceedings. LG&E and KU commenced preliminary construction activities in the third quarter of 2012 and project construction is expected to be completed by May 2015. The project, which includes building a natural gas supply pipeline and related transmission projects, has an estimated cost of approximately $600 million. In conjunction with this construction and to meet new, more stringent EPA regulations with a 2015 compliance date, LG&E and KU anticipate retiring five older coal-fired electric generating units at the Cane Run and Green River plants, which have a combined summer capacity rating of 724 MW. In addition, KU retired a 12 MW unit at the Haefling plant in December 2013 and the remaining 71 MW unit at the Tyrone plant in February 2013. There were no significant gains or losses related to the 2013 retirements. Future Capacity Needs In January 2014, LG&E and KU filed an application for a CPCN with the KPSC requesting approval to construct a NGCC unit at KU's Green River generating site (Green River Unit 5) and a solar generating facility at the E. W. Brown generating site. Subject to finalizing details, regulatory applications, permitting and construction schedules, Green River Unit 5 is expected to have approximately 700 MW of capacity at an estimated cost of $700 million and is planned to be operational in 2018. Green River Unit 5 will be jointly owned by LG&E and KU, with LG&E owning a 40% undivided interest and KU owning a 60% undivided interest. The solar generating facility is expected to have approximately 10 MW of capacity at an estimated cost of $36 million and is planned to be operational in 2016. The solar generating facility will be jointly owned by LG&E and KU, with LG&E owning a 36% undivided interest and KU owning a 64% undivided interest. (PPL and PPL Energy Supply) Hydroelectric Expansion Projects In 2009, in light of the availability of tax incentives and potential federal loan guarantees for renewable projects contained in the Economic Stimulus Package, PPL Energy Supply filed an application with the FERC to expand capacity at its Holtwood and Rainbow hydroelectric facilities, which the FERC approved. In the first quarter of 2013, the Rainbow hydroelectric redevelopment project in Great Falls, Montana, which increased total capacity to 63 MW, was placed in service. In the fourth quarter of 2013, the 125 MW Holtwood project was placed in service. PPL Energy Supply believes that the projects are eligible for either investment tax credits or Section 1603 Treasury grants. As of December 31, 2013, PPL Energy Supply had recognized investment tax credits for both projects and continued to evaluate the desirability of obtaining Treasury grants in lieu of the investment tax credits. As of December 31, 2013, PPL Energy Supply had recorded cumulative deferred investment tax credits of $60 million and $117 million for the Rainbow and Holtwood hydroelectric facilities. The credits reduced PPL Energy Supply's tax liability and are amortized over the life of the related assets. In January 2014, the U.S. Department of Treasury awarded $56 million for Specified Energy Property in Lieu of Tax Credits for the Rainbow project. PPL Energy Supply has accepted and will account for the receipt of the $56 million grant in 2014. PPL Energy Supply is required to recapture $60 million of investment tax credits previously recorded related to the Rainbow project as a result of the grant receipt. The accounting for the grant receipt and recapture of investment tax credits is not expected to have a significant impact on the financial statements in 2014. Bell Bend COLA In 2008, a PPL Energy Supply subsidiary, PPL Bell Bend, LLC (PPL Bell Bend) submitted a COLA to the NRC for the proposed Bell Bend nuclear generating unit (Bell Bend) to be built adjacent to the Susquehanna plant. In 2008, PPL Bell Bend submitted Parts I and II of an application for a federal loan guarantee for Bell Bend to the DOE. In February 2014, the DOE announced the first loan guarantee for a nuclear project in Georgia. Eight of the ten applicants that submitted Part II applications remain active in the DOE program; however, the DOE has stated that the $18.5 billion currently appropriated to support new nuclear projects would not likely be enough for more than three projects. PPL Bell Bend submits quarterly application updates for Bell Bend to the DOE to remain active in the loan guarantee application process. The NRC continues to review the COLA. PPL Bell Bend does not expect to complete the COLA review process with the NRC prior to 2016. PPL Bell Bend has made no decision to proceed with construction and expects that such decision will not be made for several years given the anticipated lengthy NRC license approval process. Additionally, PPL Bell Bend does not expect to proceed with construction absent favorable economics, a joint arrangement with other interested parties and a federal loan guarantee or other acceptable financing. PPL Bell Bend is currently authorized to spend up to $224 million on the COLA and other permitting costs necessary for construction, which is expected to be sufficient to fund the project through receipt of the license. At December 31, 2013 and December 31, 2012, $173 million and $154 million of costs, which includes capitalized interest, associated with the licensing application were capitalized and are included on the Balance Sheets in noncurrent "Other intangibles." PPL Bell Bend believes that the estimated fair value of the COLA currently exceeds the costs expected to be capitalized associated with the licensing application. Regional Transmission Line Expansion Plan (PPL and PPL Electric) Susquehanna-Roseland In 2007, PJM directed the construction of a new 150-mile, 500-kV transmission line between the Susquehanna substation in Pennsylvania and the Roseland substation in New Jersey that it identified as essential to long-term reliability of the Mid-Atlantic electricity grid. PJM determined that the line was needed to prevent potential overloads that could occur on several existing transmission lines in the interconnected PJM system. PJM directed PPL Electric to construct the Pennsylvania portion of the Susquehanna-Roseland line and Public Service Electric & Gas Company to construct the New Jersey portion of the line. Construction activities have been underway on the 101-mile route in Pennsylvania since 2012. The line is expected to be completed before the peak summer demand period of 2015. At December 31, 2013, PPL Electric's estimated share of the project cost was $630 million. At December 31, 2013, $377 million of costs were capitalized and are included on the Balance Sheet primarily in "Construction work in progress." Northeast/Pocono In October 2012, the FERC issued an order in response to PPL Electric's December 2011 request for ratemaking incentives for the Northeast/Pocono Reliability project (a new 58-mile 230 kV transmission line that includes three new substations and upgrades to adjacent facilities). The FERC granted the incentive for inclusion in rate base of all prudently incurred construction work in progress (CWIP) costs but denied the requested incentive for a 100 basis point adder to the return on equity. The order required a follow-up compliance filing from PPL Electric to ensure proper accounting treatment of AFUDC and CWIP for the project, which PPL Electric submitted to the FERC in March 2013 and the FERC subsequently approved in April 2013. In December 2012, PPL Electric submitted an application to the PUC requesting permission to site and construct the project. A number of parties protested the application, which was subsequently assigned to an Administrative Law Judge (ALJ). Evidentiary hearings were held in July 2013. In October 2013, the ALJ concluded that PPL met its burden on all issues, and recommended that the PUC approve the siting application, two zoning petitions, and the remaining eminent domain applications. On January 9, 2014, the PUC issued a Final Order approving the Application. No party has filed an appeal of the PUC's decision and the deadline for such appeals has passed. PPL Electric expects the project to be completed in 2017. At December 31, 2013, PPL Electric's estimated cost of the project was $335 million, most of which qualifies for the CWIP incentive treatment. Other (PPL and PPL Energy Supply) Montana Transactions In September 2013, PPL Montana executed a definitive agreement to sell to NorthWestern its hydroelectric generating facilities located in Montana with a generation capacity of 633 MW for $900 million in cash, subject to certain adjustments. The sale, which is not expected to close before the second half of 2014, includes 11 hydroelectric power facilities and related assets. The sale is subject to closing conditions, including receipt of regulatory approvals by the FERC and the Montana Public Service Commission and certain third-party consents. Due to the uncertainties related to certain of these conditions as of December 31, 2013, the sale did not meet the applicable accounting criteria for the assets and liabilities included in the transaction to be classified as held for sale on the balance sheet. To facilitate the sale, on December 20, 2013, PPL Montana terminated its operating lease arrangement related to partial interests in Units 1, 2 and 3 of the Colstrip coal-fired electric generating facility and acquired those interests, collectively, for $271 million. At lease termination, the existing lease-related assets on the balance sheet consisting primarily of prepaid rent and leasehold improvements were written-off and the acquired Colstrip assets were recorded at fair value as of the acquisition date. PPL and PPL Energy Supply recorded a charge of $697 million ($413 million after-tax) for the termination of the lease included in "Loss on lease termination" on the 2013 Statements of Income. The $271 million payment is reflected in "Cash Flows from Operating Activities" on the 2013 Statements of Cash Flow.

Acquisitions, Development and Divestitures

12 Months Ended

Dec. 31, 2013

Acquisitions Development And Divestitures [Abstract]

Acquisitions, Development and Divestitures

8. Acquisitions, Development and Divestitures

(All Registrants)

The Registrants from time to time evaluate opportunities for potential acquisitions, divestitures and development projects. Development projects are reexamined based on market conditions and other factors to determine whether to proceed with the projects, sell, cancel or expand them, execute tolling agreements or pursue other options. Any resulting transactions may impact future financial results. See Note 9 for information on discontinued operations. See Note 10 for information on completed acquisitions.

Development

(PPL, LKE, LG&E and KU)

Cane Run Unit 7 Construction

In September 2011, LG&E and KU filed an application for a CPCN with the KPSC requesting approval to build Cane Run Unit 7. In May 2012, the KPSC issued an order approving the request. LG&E will own a 22% undivided interest, and KU will own a 78% undivided interest in the new NGCC generating unit. A formal request for recovery of the costs associated with the construction was not included in the CPCN application but certain Cane Run Unit 7 construction work in progress has been included in base rates and the remaining capital costs are expected to be included in future rate proceedings. LG&E and KU commenced preliminary construction activities in the third quarter of 2012 and project construction is expected to be completed by May 2015. The project, which includes building a natural gas supply pipeline and related transmission projects, has an estimated cost of approximately $600 million.

In conjunction with this construction and to meet new, more stringent EPA regulations with a 2015 compliance date, LG&E and KU anticipate retiring five older coal-fired electric generating units at the Cane Run and Green River plants, which have a combined summer capacity rating of 724 MW. In addition, KU retired a 12 MW unit at the Haefling plant in December 2013 and the remaining 71 MW unit at the Tyrone plant in February 2013. There were no significant gains or losses related to the 2013 retirements.

Future Capacity Needs

In January 2014, LG&E and KU filed an application for a CPCN with the KPSC requesting approval to construct a NGCC unit at KU's Green River generating site (Green River Unit 5) and a solar generating facility at the E. W. Brown generating site. Subject to finalizing details, regulatory applications, permitting and construction schedules, Green River Unit 5 is expected to have approximately 700 MW of capacity at an estimated cost of $700 million and is planned to be operational in 2018. Green River Unit 5 will be jointly owned by LG&E and KU, with LG&E owning a 40% undivided interest and KU owning a 60% undivided interest. The solar generating facility is expected to have approximately 10 MW of capacity at an estimated cost of $36 million and is planned to be operational in 2016. The solar generating facility will be jointly owned by LG&E and KU, with LG&E owning a 36% undivided interest and KU owning a 64% undivided interest.

(PPL and PPL Energy Supply)

Hydroelectric Expansion Projects

In 2009, in light of the availability of tax incentives and potential federal loan guarantees for renewable projects contained in the Economic Stimulus Package, PPL Energy Supply filed an application with the FERC to expand capacity at its Holtwood and Rainbow hydroelectric facilities, which the FERC approved. In the first quarter of 2013, the Rainbow hydroelectric redevelopment project in Great Falls, Montana, which increased total capacity to 63 MW, was placed in service. In the fourth quarter of 2013, the 125 MW Holtwood project was placed in service.

PPL Energy Supply believes that the projects are eligible for either investment tax credits or Section 1603 Treasury grants. As of December 31, 2013, PPL Energy Supply had recognized investment tax credits for both projects and continued to evaluate the desirability of obtaining Treasury grants in lieu of the investment tax credits.

As of December 31, 2013, PPL Energy Supply had recorded cumulative deferred investment tax credits of $60 million and $117 million for the Rainbow and Holtwood hydroelectric facilities. The credits reduced PPL Energy Supply's tax liability and are amortized over the life of the related assets.

In January 2014, the U.S. Department of Treasury awarded $56 million for Specified Energy Property in Lieu of Tax Credits for the Rainbow project. PPL Energy Supply has accepted and will account for the receipt of the $56 million grant in 2014. PPL Energy Supply is required to recapture $60 million of investment tax credits previously recorded related to the Rainbow project as a result of the grant receipt. The accounting for the grant receipt and recapture of investment tax credits is not expected to have a significant impact on the financial statements in 2014.

Bell Bend COLA

In 2008, a PPL Energy Supply subsidiary, PPL Bell Bend, LLC (PPL Bell Bend) submitted a COLA to the NRC for the proposed Bell Bend nuclear generating unit (Bell Bend) to be built adjacent to the Susquehanna plant.

In 2008, PPL Bell Bend submitted Parts I and II of an application for a federal loan guarantee for Bell Bend to the DOE. In February 2014, the DOE announced the first loan guarantee for a nuclear project in Georgia. Eight of the ten applicants that submitted Part II applications remain active in the DOE program; however, the DOE has stated that the $18.5 billion currently appropriated to support new nuclear projects would not likely be enough for more than three projects. PPL Bell Bend submits quarterly application updates for Bell Bend to the DOE to remain active in the loan guarantee application process.

The NRC continues to review the COLA. PPL Bell Bend does not expect to complete the COLA review process with the NRC prior to 2016. PPL Bell Bend has made no decision to proceed with construction and expects that such decision will not be made for several years given the anticipated lengthy NRC license approval process. Additionally, PPL Bell Bend does not expect to proceed with construction absent favorable economics, a joint arrangement with other interested parties and a federal loan guarantee or other acceptable financing. PPL Bell Bend is currently authorized to spend up to $224 million on the COLA and other permitting costs necessary for construction, which is expected to be sufficient to fund the project through receipt of the license. At December 31, 2013 and December 31, 2012, $173 million and $154 million of costs, which includes capitalized interest, associated with the licensing application were capitalized and are included on the Balance Sheets in noncurrent "Other intangibles." PPL Bell Bend believes that the estimated fair value of the COLA currently exceeds the costs expected to be capitalized associated with the licensing application.

Regional Transmission Line Expansion Plan (PPL and PPL Electric)

Susquehanna-Roseland

In 2007, PJM directed the construction of a new 150-mile, 500-kV transmission line between the Susquehanna substation in Pennsylvania and the Roseland substation in New Jersey that it identified as essential to long-term reliability of the Mid-Atlantic electricity grid. PJM determined that the line was needed to prevent potential overloads that could occur on several existing transmission lines in the interconnected PJM system. PJM directed PPL Electric to construct the Pennsylvania portion of the Susquehanna-Roseland line and Public Service Electric & Gas Company to construct the New Jersey portion of the line.

Construction activities have been underway on the 101-mile route in Pennsylvania since 2012. The line is expected to be completed before the peak summer demand period of 2015. At December 31, 2013, PPL Electric's estimated share of the project cost was $630 million. At December 31, 2013, $377 million of costs were capitalized and are included on the Balance Sheet primarily in "Construction work in progress."

Northeast/Pocono

In October 2012, the FERC issued an order in response to PPL Electric's December 2011 request for ratemaking incentives for the Northeast/Pocono Reliability project (a new 58-mile 230 kV transmission line that includes three new substations and upgrades to adjacent facilities). The FERC granted the incentive for inclusion in rate base of all prudently incurred construction work in progress (CWIP) costs but denied the requested incentive for a 100 basis point adder to the return on equity. The order required a follow-up compliance filing from PPL Electric to ensure proper accounting treatment of AFUDC and CWIP for the project, which PPL Electric submitted to the FERC in March 2013 and the FERC subsequently approved in April 2013.

In December 2012, PPL Electric submitted an application to the PUC requesting permission to site and construct the project. A number of parties protested the application, which was subsequently assigned to an Administrative Law Judge (ALJ). Evidentiary hearings were held in July 2013. In October 2013, the ALJ concluded that PPL met its burden on all issues, and recommended that the PUC approve the siting application, two zoning petitions, and the remaining eminent domain applications. On January 9, 2014, the PUC issued a Final Order approving the Application. No party has filed an appeal of the PUC's decision and the deadline for such appeals has passed. PPL Electric expects the project to be completed in 2017. At December 31, 2013, PPL Electric's estimated cost of the project was $335 million, most of which qualifies for the CWIP incentive treatment.

Other (PPL and PPL Energy Supply)

Montana Transactions

In September 2013, PPL Montana executed a definitive agreement to sell to NorthWestern its hydroelectric generating facilities located in Montana with a generation capacity of 633 MW for $900 million in cash, subject to certain adjustments. The sale, which is not expected to close before the second half of 2014, includes 11 hydroelectric power facilities and related assets. The sale is subject to closing conditions, including receipt of regulatory approvals by the FERC and the Montana Public Service Commission and certain third-party consents. Due to the uncertainties related to certain of these conditions as of December 31, 2013, the sale did not meet the applicable accounting criteria for the assets and liabilities included in the transaction to be classified as held for sale on the balance sheet.

To facilitate the sale, on December 20, 2013, PPL Montana terminated its operating lease arrangement related to partial interests in Units 1, 2 and 3 of the Colstrip coal-fired electric generating facility and acquired those interests, collectively, for $271 million. At lease termination, the existing lease-related assets on the balance sheet consisting primarily of prepaid rent and leasehold improvements were written-off and the acquired Colstrip assets were recorded at fair value as of the acquisition date. PPL and PPL Energy Supply recorded a charge of $697 million ($413 million after-tax) for the termination of the lease included in "Loss on lease termination" on the 2013 Statements of Income. The $271 million payment is reflected in "Cash Flows from Operating Activities" on the 2013 Statements of Cash Flow.