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Business and Basis of Presentation (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Restructuring Cost and Reserve [Line Items] |  |
TSA term of agreement | 2 years |
PPL Corporation |  |
Restructuring Cost and Reserve [Line Items] |  |
Services provided under TSA | $ 12 |
Operating Expense |  |
Restructuring Cost and Reserve [Line Items] |  |
Prior period reclassification adjustment |  | $ 145
Fuel and energy purchases |  |
Restructuring Cost and Reserve [Line Items] |  |
Prior period reclassification adjustment |  | $ 18

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- Definition Transition Services Agreement (TSA) Term + References No definition available. + Details
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- Definition The amount of a reclassification adjustment made to prior period financial statement amounts. + References No definition available. + Details
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- Definition A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07.2(a),(b),(c),(d)) -URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 225 -Section 45 -Paragraph 3 -Subparagraph (k) -URI http://asc.fasb.org/extlink&oid=6488370&loc=d3e13550-115849 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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