Acquisitions, Development and Divestitures	6 Months Ended
Jun. 30, 2014
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 8 in the 2013 Form 10-K for additional information. Divestitures Anticipated Spinoff of PPL Energy Supply (PPL and PPL Energy Supply) In June 2014, PPL and PPL Energy Supply executed definitive agreements with affiliates of Riverstone to combine their competitive power generation businesses into a new, stand-alone, publicly traded, independent power producer named Talen Energy. Under the terms of the agreements, at closing, PPL will spin off PPL Energy Supply to PPL shareowners and simultaneously combine that business with RJS Power. Upon closing, PPL shareowners will own 65% of Talen Energy and affiliates of Riverstone will own 35%. PPL will have no continuing ownership interest in, control of, or affiliation with Talen Energy and PPL's shareowners will receive a number of Talen Energy shares at closing based on the number of PPL shares owned as of the spinoff record date. The spinoff will have no effect on the number of PPL common shares owned by PPL shareowners or the number of shares of PPL common stock outstanding. The transaction is intended to be tax-free to PPL and its shareowners for U.S. federal income tax purposes and is subject to customary closing conditions, including receipt of certain regulatory approvals by the NRC, the FERC, the DOJ and the PUC. In addition, there must be available, subject to certain conditions, at least $1 billion of undrawn capacity after excluding any letters of credit or other credit support measures posted in connection with energy marketing and trading transactions then outstanding, under a Talen Energy (or its subsidiaries) revolving credit or similar facility. The transaction is expected to close in the first or second quarter of 2015. (PPL, PPL Energy Supply and PPL Electric) Following the announcement of the transaction to form Talen Energy, efforts have been initiated to identify the appropriate staffing for Talen Energy and for PPL and its subsidiaries following completion of the spinoff. Organizational plans are expected to be completed by the end of 2014. As a result, charges for employee separation and related costs are anticipated to be recorded in future periods. The separation costs to be incurred include cash severance compensation, lump sum COBRA reimbursement payments, accelerated stock-based compensation vesting, pro-rated performance-based cash incentive and stock-based compensation awards and outplacement services. At present, there is considerable uncertainty as to the range of costs that will be incurred and when those costs will be recognized, as the amount of each category of costs will depend on the number of employees leaving the company, current position and compensation level, years of service and expected separation date. Additionally, certain of these costs are expected to be reimbursed to PPL by Talen Energy upon closing of the transaction. As a result, a range of the separation costs associated with the spinoff transaction and the timing of when those costs will be recognized cannot be reasonably estimated at this time but could be material. (PPL) As a result of the spinoff announcement, PPL recorded $46 million of deferred income tax expense during the three and six months ended June 30, 2014 to adjust valuation allowances on deferred tax assets primarily for state net operating loss carryforwards that were previously supported by the future earnings of PPL Energy Supply. In addition, PPL recorded $16 million of third-party costs during the three and six months ended June 30, 2014 related to this transaction in "Other Income (Expense) - net" on the Statement of Income, primarily for investment bank advisory, legal, consulting and accounting fees. PPL cannot currently estimate a range of total third-party costs that will ultimately be incurred; however, additional costs of at least $26 million will be recognized upon closing of the transaction. The assets and liabilities of PPL Energy Supply will continue to be classified as "held and used" on PPL's Balance Sheet until the closing of the transaction. The spinoff announcement was evaluated and determined not to be an event or a change in circumstance that required a recoverability test or a goodwill impairment assessment. However, an impairment loss could be recognized by PPL at the spinoff date if the aggregate carrying amount of PPL Energy Supply's assets and liabilities exceeds its aggregate fair value at that date. PPL cannot currently predict whether an impairment loss will be recorded at the spinoff date. (PPL Energy Supply) PPL Energy Supply will treat the combination with RJS Power as an acquisition, as PPL Energy Supply will be considered the accounting acquirer in accordance with business combination accounting guidance. Montana Hydro Sale Agreement (PPL and PPL Energy Supply) 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 fourth quarter of 2014, includes 11 hydroelectric power facilities and related assets. In April 2014, the DOJ and Federal Trade Commission granted early termination of PPL Montana's and NorthWestern's notifications under the Hart-Scott-Rodino Antitrust Improvements Act of 1976. The sale remains subject to closing conditions, including receipt of regulatory approvals by the FERC and the MPSC and certain third-party consents. Due to the uncertainties related to certain of these conditions as of June 30, 2014, 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. Development Hydroelectric Expansion Projects (PPL and PPL Energy Supply) In January 2014, the U.S. Department of Treasury awarded $56 million for Specified Energy Property in Lieu of Tax Credits for the Rainbow hydroelectric redevelopment project in Great Falls, Montana. PPL Energy Supply accepted and accounted for the receipt of the grant in the first quarter of 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 impact on the financial statements for the grant receipt and recapture of investment tax credits was not significant for the three and six months ended June 30, 2014, and will not be significant in future periods. In July 2014, the U.S. Department of Treasury awarded $108 million for Specified Energy Property in Lieu of Tax Credits for the Holtwood hydroelectric project in Holtwood, Pennsylvania. PPL Energy Supply accepted and will account for the receipt of the grant in the third quarter of 2014. PPL Energy Supply is required to recapture $117 million of investment tax credits previously recorded related to the Holtwood project as a result of the grant receipt. The impact on the financial statements for the grant receipt and recapture of investment tax credits is not expected to be significant in 2014 or future periods. Future Capacity Needs (PPL, LKE, LG&E and KU) Construction activity continues on the previously announced NGCC unit, Cane Run Unit 7, scheduled to be operational in May 2015. In October 2013, LG&E and KU announced plans to build a second NGCC unit, Green River Unit 5, at KU's Green River generating site. Subject to finalizing details, regulatory applications, permitting and construction schedules, the facility would have approximately 700 MW of capacity and cost $700 million and was originally planned to be operational in 2018. At the same time, LG&E and KU also announced plans for a 10 MW solar generation facility to be operational in 2016 and to cost approximately $36 million. As a result of developing uncertainty as to the need for the new capacity, in April 2014 LG&E and KU asked the KPSC to hold the related CPCN case in abeyance for 90 days. In May 2014, the KPSC granted that request and scheduled an informal conference for August 2014. LG&E and KU continue to evaluate their future capacity requirements, with the possibility that reduced or delayed capacity needs may result in adjustments to the timing of previously estimated capacity construction.

Acquisitions, Development and Divestitures

6 Months Ended

Jun. 30, 2014

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 8 in the 2013 Form 10-K for additional information.

Divestitures

Anticipated Spinoff of PPL Energy Supply

(PPL and PPL Energy Supply)

In June 2014, PPL and PPL Energy Supply executed definitive agreements with affiliates of Riverstone to combine their competitive power generation businesses into a new, stand-alone, publicly traded, independent power producer named Talen Energy. Under the terms of the agreements, at closing, PPL will spin off PPL Energy Supply to PPL shareowners and simultaneously combine that business with RJS Power. Upon closing, PPL shareowners will own 65% of Talen Energy and affiliates of Riverstone will own 35%. PPL will have no continuing ownership interest in, control of, or affiliation with Talen Energy and PPL's shareowners will receive a number of Talen Energy shares at closing based on the number of PPL shares owned as of the spinoff record date. The spinoff will have no effect on the number of PPL common shares owned by PPL shareowners or the number of shares of PPL common stock outstanding. The transaction is intended to be tax-free to PPL and its shareowners for U.S. federal income tax purposes and is subject to customary closing conditions, including receipt of certain regulatory approvals by the NRC, the FERC, the DOJ and the PUC. In addition, there must be available, subject to certain conditions, at least $1 billion of undrawn capacity after excluding any letters of credit or other credit support measures posted in connection with energy marketing and trading transactions then outstanding, under a Talen Energy (or its subsidiaries) revolving credit or similar facility. The transaction is expected to close in the first or second quarter of 2015.

(PPL, PPL Energy Supply and PPL Electric)

Following the announcement of the transaction to form Talen Energy, efforts have been initiated to identify the appropriate staffing for Talen Energy and for PPL and its subsidiaries following completion of the spinoff. Organizational plans are expected to be completed by the end of 2014. As a result, charges for employee separation and related costs are anticipated to be recorded in future periods. The separation costs to be incurred include cash severance compensation, lump sum COBRA reimbursement payments, accelerated stock-based compensation vesting, pro-rated performance-based cash incentive and stock-based compensation awards and outplacement services. At present, there is considerable uncertainty as to the range of costs that will be incurred and when those costs will be recognized, as the amount of each category of costs will depend on the number of employees leaving the company, current position and compensation level, years of service and expected separation date. Additionally, certain of these costs are expected to be reimbursed to PPL by Talen Energy upon closing of the transaction. As a result, a range of the separation costs associated with the spinoff transaction and the timing of when those costs will be recognized cannot be reasonably estimated at this time but could be material.

(PPL)

As a result of the spinoff announcement, PPL recorded $46 million of deferred income tax expense during the three and six months ended June 30, 2014 to adjust valuation allowances on deferred tax assets primarily for state net operating loss carryforwards that were previously supported by the future earnings of PPL Energy Supply.

In addition, PPL recorded $16 million of third-party costs during the three and six months ended June 30, 2014 related to this transaction in "Other Income (Expense) - net" on the Statement of Income, primarily for investment bank advisory, legal, consulting and accounting fees. PPL cannot currently estimate a range of total third-party costs that will ultimately be incurred; however, additional costs of at least $26 million will be recognized upon closing of the transaction.

The assets and liabilities of PPL Energy Supply will continue to be classified as "held and used" on PPL's Balance Sheet until the closing of the transaction. The spinoff announcement was evaluated and determined not to be an event or a change in circumstance that required a recoverability test or a goodwill impairment assessment. However, an impairment loss could be recognized by PPL at the spinoff date if the aggregate carrying amount of PPL Energy Supply's assets and liabilities exceeds its aggregate fair value at that date. PPL cannot currently predict whether an impairment loss will be recorded at the spinoff date.

(PPL Energy Supply)

PPL Energy Supply will treat the combination with RJS Power as an acquisition, as PPL Energy Supply will be considered the accounting acquirer in accordance with business combination accounting guidance.

Montana Hydro Sale Agreement (PPL and PPL Energy Supply)

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 fourth quarter of 2014, includes 11 hydroelectric power facilities and related assets. In April 2014, the DOJ and Federal Trade Commission granted early termination of PPL Montana's and NorthWestern's notifications under the Hart-Scott-Rodino Antitrust Improvements Act of 1976. The sale remains subject to closing conditions, including receipt of regulatory approvals by the FERC and the MPSC and certain third-party consents. Due to the uncertainties related to certain of these conditions as of June 30, 2014, 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.

Development

Hydroelectric Expansion Projects (PPL and PPL Energy Supply)

In January 2014, the U.S. Department of Treasury awarded $56 million for Specified Energy Property in Lieu of Tax Credits for the Rainbow hydroelectric redevelopment project in Great Falls, Montana. PPL Energy Supply accepted and accounted for the receipt of the grant in the first quarter of 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 impact on the financial statements for the grant receipt and recapture of investment tax credits was not significant for the three and six months ended June 30, 2014, and will not be significant in future periods.

In July 2014, the U.S. Department of Treasury awarded $108 million for Specified Energy Property in Lieu of Tax Credits for the Holtwood hydroelectric project in Holtwood, Pennsylvania. PPL Energy Supply accepted and will account for the receipt of the grant in the third quarter of 2014. PPL Energy Supply is required to recapture $117 million of investment tax credits previously recorded related to the Holtwood project as a result of the grant receipt. The impact on the financial statements for the grant receipt and recapture of investment tax credits is not expected to be significant in 2014 or future periods.

Future Capacity Needs (PPL, LKE, LG&E and KU)

Construction activity continues on the previously announced NGCC unit, Cane Run Unit 7, scheduled to be operational in May 2015. In October 2013, LG&E and KU announced plans to build a second NGCC unit, Green River Unit 5, at KU's Green River generating site. Subject to finalizing details, regulatory applications, permitting and construction schedules, the facility would have approximately 700 MW of capacity and cost $700 million and was originally planned to be operational in 2018. At the same time, LG&E and KU also announced plans for a 10 MW solar generation facility to be operational in 2016 and to cost approximately $36 million. As a result of developing uncertainty as to the need for the new capacity, in April 2014 LG&E and KU asked the KPSC to hold the related CPCN case in abeyance for 90 days. In May 2014, the KPSC granted that request and scheduled an informal conference for August 2014. LG&E and KU continue to evaluate their future capacity requirements, with the possibility that reduced or delayed capacity needs may result in adjustments to the timing of previously estimated capacity construction.