2.4.0.8101600 - Disclosure - Asset Retirement Obligationstruefalsefalse1false
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4us-gaap_AssetRetirementObligationDisclosureTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel| 1falsefalsefalse00<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 12px"><td colspan="3" style="width: 262px; text-align:left;border-color:#000000;min-width:262px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">16. Asset Retirement Obligations</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="5" style="width: 284px; text-align:left;border-color:#000000;min-width:284px;"><font style="FONT-STYLE: italic;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">(PPL, PPL Energy Supply, LKE, LG&E and KU)</font></td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="9" style="width: 426px; text-align:left;border-color:#000000;min-width:426px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">The changes in the carrying amounts of AROs were as follows.</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">PPL</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">PPL</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">Energy Supply</font></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">LKE</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">LG&E</font></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">KU</font></td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="3" style="width: 262px; text-align:left;border-color:#000000;min-width:262px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Balance at December 31, 2012</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 552</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 375</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 131</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 62</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 69</font></td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Accretion expense</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 18</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 14</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 3</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 1</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 2</font></td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Changes in estimated cash flow or settlement date</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (1)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 1</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 1</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Effect of foreign currency exchange rates</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (3)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Obligations settled</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (6)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (3)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> (3)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> (3)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="3" style="width: 262px; text-align:left;border-color:#000000;min-width:262px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Balance at June 30, 2013</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 561</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 385</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 132</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 61</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 71</font></td></tr></table></div><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><p style='margin-top:12pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Substantially all of the ARO balances are classified as noncurrent at June 30, 2013 and December 31, 2012.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><p style='margin-top:12pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">(</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">PPL</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">, LKE, LG</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">&</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">E and KU</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">)</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Accretion and depreciation expense recorded by LG&E and KU is offset with a regulatory credit on the income statement, such that there is no</font><font style="font-family:Times New Roman;font-size:10pt;"> net </font><font style="font-family:Times New Roman;font-size:10pt;">earnings impact.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;margin-left:0px;">(PPL and PPL Energy Supply)</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">The most significant ARO recorded by PPL and PPL Energy Supply relates to the decommissioning of the Susquehanna nuclear plant. The accrued nuclear decommissioning obligation was $</font><font style="font-family:Times New Roman;font-size:10pt;">329</font><font style="font-family:Times New Roman;font-size:10pt;"> </font><font style="font-family:Times New Roman;font-size:10pt;">million and $</font><font style="font-family:Times New Roman;font-size:10pt;">316</font><font style="font-family:Times New Roman;font-size:10pt;"> million at June 30, 2013 and December 31, 2012</font><font style="font-family:Times New Roman;font-size:10pt;">.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Assets in the NDT funds are legally restricted for purposes of settling PPL</font><font style="font-family:Times New Roman;font-size:10pt;">'</font><font style="font-family:Times New Roman;font-size:10pt;">s and PPL Energy Supply</font><font style="font-family:Times New Roman;font-size:10pt;">'</font><font style="font-family:Times New Roman;font-size:10pt;">s ARO related to the decommissioning of the </font><font style="font-family:Times New Roman;font-size:10pt;">PPL </font><font style="font-family:Times New Roman;font-size:10pt;">Susquehanna</font><font style="font-family:Times New Roman;font-size:10pt;"> nuclear</font><font style="font-family:Times New Roman;font-size:10pt;"> </font><font style="font-family:Times New Roman;font-size:10pt;">plant</font><font style="font-family:Times New Roman;font-size:10pt;">. The aggregate fair value of these assets was $</font><font style="font-family:Times New Roman;font-size:10pt;">771</font><font style="font-family:Times New Roman;font-size:10pt;"> million and $</font><font style="font-family:Times New Roman;font-size:10pt;">712 </font><font style="font-family:Times New Roman;font-size:10pt;">million at June 30, 2013 and December 31, 2012, and is included in </font><font style="font-family:Times New Roman;font-size:10pt;">"</font><font style="font-family:Times New Roman;font-size:10pt;">Nuclear plant decommissioning trust funds</font><font style="font-family:Times New Roman;font-size:10pt;">"</font><font style="font-family:Times New Roman;font-size:10pt;"> on the Balance Sheets. See Notes </font><font style="font-family:Times New Roman;font-size:10pt;">13</font><font style="font-family:Times New Roman;font-size:10pt;"> and </font><font style="font-family:Times New Roman;font-size:10pt;">17</font><font style="font-family:Times New Roman;font-size:10pt;"> for additional information on these assets</font><font style="font-family:Times New Roman;font-size:10pt;">.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p>falsefalsefalse | nonnum:textBlockItemTypenaThe entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7569-110849
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 143
-Paragraph 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
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4us-gaap_AssetRetirementObligationDisclosureTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel| 1falsefalsefalse00<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 12px"><td colspan="3" style="width: 262px; text-align:left;border-color:#000000;min-width:262px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">16. Asset Retirement Obligations</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="5" style="width: 284px; text-align:left;border-color:#000000;min-width:284px;"><font style="FONT-STYLE: italic;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">(PPL, PPL Energy Supply, LKE, LG&E and KU)</font></td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="9" style="width: 426px; text-align:left;border-color:#000000;min-width:426px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">The changes in the carrying amounts of AROs were as follows.</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">PPL</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">PPL</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">Energy Supply</font></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">LKE</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">LG&E</font></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">KU</font></td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="3" style="width: 262px; text-align:left;border-color:#000000;min-width:262px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Balance at December 31, 2012</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 552</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 375</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 131</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 62</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 69</font></td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Accretion expense</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 18</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 14</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 3</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 1</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 2</font></td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Changes in estimated cash flow or settlement date</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (1)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 1</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 1</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Effect of foreign currency exchange rates</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (3)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Obligations settled</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (6)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (3)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> (3)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> (3)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="3" style="width: 262px; text-align:left;border-color:#000000;min-width:262px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Balance at June 30, 2013</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 561</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 385</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 132</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 61</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 71</font></td></tr></table></div><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><p style='margin-top:12pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Substantially all of the ARO balances are classified as noncurrent at June 30, 2013 and December 31, 2012.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><p style='margin-top:12pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">(</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">PPL</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">, LKE, LG</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">&</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">E and KU</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">)</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Accretion and depreciation expense recorded by LG&E and KU is offset with a regulatory credit on the income statement, such that there is no</font><font style="font-family:Times New Roman;font-size:10pt;"> net </font><font style="font-family:Times New Roman;font-size:10pt;">earnings impact.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;margin-left:0px;">(PPL and PPL Energy Supply)</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">The most significant ARO recorded by PPL and PPL Energy Supply relates to the decommissioning of the Susquehanna nuclear plant. The accrued nuclear decommissioning obligation was $</font><font style="font-family:Times New Roman;font-size:10pt;">329</font><font style="font-family:Times New Roman;font-size:10pt;"> </font><font style="font-family:Times New Roman;font-size:10pt;">million and $</font><font style="font-family:Times New Roman;font-size:10pt;">316</font><font style="font-family:Times New Roman;font-size:10pt;"> million at June 30, 2013 and December 31, 2012</font><font style="font-family:Times New Roman;font-size:10pt;">.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Assets in the NDT funds are legally restricted for purposes of settling PPL</font><font style="font-family:Times New Roman;font-size:10pt;">'</font><font style="font-family:Times New Roman;font-size:10pt;">s and PPL Energy Supply</font><font style="font-family:Times New Roman;font-size:10pt;">'</font><font style="font-family:Times New Roman;font-size:10pt;">s ARO related to the decommissioning of the </font><font style="font-family:Times New Roman;font-size:10pt;">PPL </font><font style="font-family:Times New Roman;font-size:10pt;">Susquehanna</font><font style="font-family:Times New Roman;font-size:10pt;"> nuclear</font><font style="font-family:Times New Roman;font-size:10pt;"> </font><font style="font-family:Times New Roman;font-size:10pt;">plant</font><font style="font-family:Times New Roman;font-size:10pt;">. The aggregate fair value of these assets was $</font><font style="font-family:Times New Roman;font-size:10pt;">771</font><font style="font-family:Times New Roman;font-size:10pt;"> million and $</font><font style="font-family:Times New Roman;font-size:10pt;">712 </font><font style="font-family:Times New Roman;font-size:10pt;">million at June 30, 2013 and December 31, 2012, and is included in </font><font style="font-family:Times New Roman;font-size:10pt;">"</font><font style="font-family:Times New Roman;font-size:10pt;">Nuclear plant decommissioning trust funds</font><font style="font-family:Times New Roman;font-size:10pt;">"</font><font style="font-family:Times New Roman;font-size:10pt;"> on the Balance Sheets. See Notes </font><font style="font-family:Times New Roman;font-size:10pt;">13</font><font style="font-family:Times New Roman;font-size:10pt;"> and </font><font style="font-family:Times New Roman;font-size:10pt;">17</font><font style="font-family:Times New Roman;font-size:10pt;"> for additional information on these assets</font><font style="font-family:Times New Roman;font-size:10pt;">.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p>falsefalsefalse | nonnum:textBlockItemTypenaThe entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7569-110849
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 143
-Paragraph 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
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4us-gaap_AssetRetirementObligationDisclosureTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel| 1falsefalsefalse00<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 12px"><td colspan="3" style="width: 262px; text-align:left;border-color:#000000;min-width:262px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">16. Asset Retirement Obligations</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="5" style="width: 284px; text-align:left;border-color:#000000;min-width:284px;"><font style="FONT-STYLE: italic;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">(PPL, PPL Energy Supply, LKE, LG&E and KU)</font></td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="9" style="width: 426px; text-align:left;border-color:#000000;min-width:426px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">The changes in the carrying amounts of AROs were as follows.</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">PPL</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">PPL</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">Energy Supply</font></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">LKE</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">LG&E</font></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">KU</font></td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="3" style="width: 262px; text-align:left;border-color:#000000;min-width:262px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Balance at December 31, 2012</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 552</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 375</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 131</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 62</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 69</font></td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Accretion expense</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 18</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 14</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 3</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 1</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 2</font></td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Changes in estimated cash flow or settlement date</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (1)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 1</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 1</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Effect of foreign currency exchange rates</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (3)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Obligations settled</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (6)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (3)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> (3)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> (3)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="3" style="width: 262px; text-align:left;border-color:#000000;min-width:262px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Balance at June 30, 2013</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 561</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 385</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 132</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 61</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 71</font></td></tr></table></div><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><p style='margin-top:12pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Substantially all of the ARO balances are classified as noncurrent at June 30, 2013 and December 31, 2012.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><p style='margin-top:12pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">(</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">PPL</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">, LKE, LG</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">&</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">E and KU</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">)</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Accretion and depreciation expense recorded by LG&E and KU is offset with a regulatory credit on the income statement, such that there is no</font><font style="font-family:Times New Roman;font-size:10pt;"> net </font><font style="font-family:Times New Roman;font-size:10pt;">earnings impact.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;margin-left:0px;">(PPL and PPL Energy Supply)</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">The most significant ARO recorded by PPL and PPL Energy Supply relates to the decommissioning of the Susquehanna nuclear plant. The accrued nuclear decommissioning obligation was $</font><font style="font-family:Times New Roman;font-size:10pt;">329</font><font style="font-family:Times New Roman;font-size:10pt;"> </font><font style="font-family:Times New Roman;font-size:10pt;">million and $</font><font style="font-family:Times New Roman;font-size:10pt;">316</font><font style="font-family:Times New Roman;font-size:10pt;"> million at June 30, 2013 and December 31, 2012</font><font style="font-family:Times New Roman;font-size:10pt;">.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Assets in the NDT funds are legally restricted for purposes of settling PPL</font><font style="font-family:Times New Roman;font-size:10pt;">'</font><font style="font-family:Times New Roman;font-size:10pt;">s and PPL Energy Supply</font><font style="font-family:Times New Roman;font-size:10pt;">'</font><font style="font-family:Times New Roman;font-size:10pt;">s ARO related to the decommissioning of the </font><font style="font-family:Times New Roman;font-size:10pt;">PPL </font><font style="font-family:Times New Roman;font-size:10pt;">Susquehanna</font><font style="font-family:Times New Roman;font-size:10pt;"> nuclear</font><font style="font-family:Times New Roman;font-size:10pt;"> </font><font style="font-family:Times New Roman;font-size:10pt;">plant</font><font style="font-family:Times New Roman;font-size:10pt;">. The aggregate fair value of these assets was $</font><font style="font-family:Times New Roman;font-size:10pt;">771</font><font style="font-family:Times New Roman;font-size:10pt;"> million and $</font><font style="font-family:Times New Roman;font-size:10pt;">712 </font><font style="font-family:Times New Roman;font-size:10pt;">million at June 30, 2013 and December 31, 2012, and is included in </font><font style="font-family:Times New Roman;font-size:10pt;">"</font><font style="font-family:Times New Roman;font-size:10pt;">Nuclear plant decommissioning trust funds</font><font style="font-family:Times New Roman;font-size:10pt;">"</font><font style="font-family:Times New Roman;font-size:10pt;"> on the Balance Sheets. See Notes </font><font style="font-family:Times New Roman;font-size:10pt;">13</font><font style="font-family:Times New Roman;font-size:10pt;"> and </font><font style="font-family:Times New Roman;font-size:10pt;">17</font><font style="font-family:Times New Roman;font-size:10pt;"> for additional information on these assets</font><font style="font-family:Times New Roman;font-size:10pt;">.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p>falsefalsefalse | nonnum:textBlockItemTypenaThe entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
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-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849
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-Publisher FASB
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 143
-Paragraph 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
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4us-gaap_AssetRetirementObligationDisclosureTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel| 1falsefalsefalse00<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 12px"><td colspan="3" style="width: 262px; text-align:left;border-color:#000000;min-width:262px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">16. Asset Retirement Obligations</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="5" style="width: 284px; text-align:left;border-color:#000000;min-width:284px;"><font style="FONT-STYLE: italic;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">(PPL, PPL Energy Supply, LKE, LG&E and KU)</font></td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="9" style="width: 426px; text-align:left;border-color:#000000;min-width:426px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">The changes in the carrying amounts of AROs were as follows.</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">PPL</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">PPL</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">Energy Supply</font></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">LKE</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">LG&E</font></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">KU</font></td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="3" style="width: 262px; text-align:left;border-color:#000000;min-width:262px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Balance at December 31, 2012</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 552</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 375</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 131</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 62</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 69</font></td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Accretion expense</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 18</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 14</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 3</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 1</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 2</font></td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Changes in estimated cash flow or settlement date</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (1)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 1</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 1</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Effect of foreign currency exchange rates</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (3)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Obligations settled</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (6)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (3)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> (3)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> (3)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="3" style="width: 262px; text-align:left;border-color:#000000;min-width:262px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Balance at June 30, 2013</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 561</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 385</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 132</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 61</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 71</font></td></tr></table></div><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><p style='margin-top:12pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Substantially all of the ARO balances are classified as noncurrent at June 30, 2013 and December 31, 2012.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><p style='margin-top:12pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">(</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">PPL</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">, LKE, LG</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">&</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">E and KU</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">)</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Accretion and depreciation expense recorded by LG&E and KU is offset with a regulatory credit on the income statement, such that there is no</font><font style="font-family:Times New Roman;font-size:10pt;"> net </font><font style="font-family:Times New Roman;font-size:10pt;">earnings impact.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;margin-left:0px;">(PPL and PPL Energy Supply)</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">The most significant ARO recorded by PPL and PPL Energy Supply relates to the decommissioning of the Susquehanna nuclear plant. The accrued nuclear decommissioning obligation was $</font><font style="font-family:Times New Roman;font-size:10pt;">329</font><font style="font-family:Times New Roman;font-size:10pt;"> </font><font style="font-family:Times New Roman;font-size:10pt;">million and $</font><font style="font-family:Times New Roman;font-size:10pt;">316</font><font style="font-family:Times New Roman;font-size:10pt;"> million at June 30, 2013 and December 31, 2012</font><font style="font-family:Times New Roman;font-size:10pt;">.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Assets in the NDT funds are legally restricted for purposes of settling PPL</font><font style="font-family:Times New Roman;font-size:10pt;">'</font><font style="font-family:Times New Roman;font-size:10pt;">s and PPL Energy Supply</font><font style="font-family:Times New Roman;font-size:10pt;">'</font><font style="font-family:Times New Roman;font-size:10pt;">s ARO related to the decommissioning of the </font><font style="font-family:Times New Roman;font-size:10pt;">PPL </font><font style="font-family:Times New Roman;font-size:10pt;">Susquehanna</font><font style="font-family:Times New Roman;font-size:10pt;"> nuclear</font><font style="font-family:Times New Roman;font-size:10pt;"> </font><font style="font-family:Times New Roman;font-size:10pt;">plant</font><font style="font-family:Times New Roman;font-size:10pt;">. The aggregate fair value of these assets was $</font><font style="font-family:Times New Roman;font-size:10pt;">771</font><font style="font-family:Times New Roman;font-size:10pt;"> million and $</font><font style="font-family:Times New Roman;font-size:10pt;">712 </font><font style="font-family:Times New Roman;font-size:10pt;">million at June 30, 2013 and December 31, 2012, and is included in </font><font style="font-family:Times New Roman;font-size:10pt;">"</font><font style="font-family:Times New Roman;font-size:10pt;">Nuclear plant decommissioning trust funds</font><font style="font-family:Times New Roman;font-size:10pt;">"</font><font style="font-family:Times New Roman;font-size:10pt;"> on the Balance Sheets. See Notes </font><font style="font-family:Times New Roman;font-size:10pt;">13</font><font style="font-family:Times New Roman;font-size:10pt;"> and </font><font style="font-family:Times New Roman;font-size:10pt;">17</font><font style="font-family:Times New Roman;font-size:10pt;"> for additional information on these assets</font><font style="font-family:Times New Roman;font-size:10pt;">.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p>falsefalsefalse | nonnum:textBlockItemTypenaThe entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
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-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7569-110849
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 143
-Paragraph 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
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4us-gaap_AssetRetirementObligationDisclosureTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel| 1falsefalsefalse00<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 12px"><td colspan="3" style="width: 262px; text-align:left;border-color:#000000;min-width:262px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">16. Asset Retirement Obligations</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="5" style="width: 284px; text-align:left;border-color:#000000;min-width:284px;"><font style="FONT-STYLE: italic;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">(PPL, PPL Energy Supply, LKE, LG&E and KU)</font></td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="9" style="width: 426px; text-align:left;border-color:#000000;min-width:426px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">The changes in the carrying amounts of AROs were as follows.</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">PPL</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:left;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">PPL</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">Energy Supply</font></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">LKE</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">LG&E</font></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:72px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">KU</font></td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 222px; text-align:left;border-color:#000000;min-width:222px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="3" style="width: 262px; text-align:left;border-color:#000000;min-width:262px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Balance at December 31, 2012</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 552</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 375</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 131</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 62</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 69</font></td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Accretion expense</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 18</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 14</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 3</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 1</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 2</font></td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Changes in estimated cash flow or settlement date</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (1)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 1</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 1</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Effect of foreign currency exchange rates</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (3)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td colspan="2" style="width: 242px; text-align:left;border-color:#000000;min-width:242px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Obligations settled</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (6)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> (3)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> (3)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> (3)</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"> </td></tr><tr style="height: 12px"><td colspan="3" style="width: 262px; text-align:left;border-color:#000000;min-width:262px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">Balance at June 30, 2013</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 561</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: right;"> 385</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 132</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 61</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:12px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;">$</font></td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:60px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;"> 71</font></td></tr></table></div><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><p style='margin-top:12pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Substantially all of the ARO balances are classified as noncurrent at June 30, 2013 and December 31, 2012.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><p style='margin-top:12pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">(</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">PPL</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">, LKE, LG</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">&</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">E and KU</font><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;">)</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Accretion and depreciation expense recorded by LG&E and KU is offset with a regulatory credit on the income statement, such that there is no</font><font style="font-family:Times New Roman;font-size:10pt;"> net </font><font style="font-family:Times New Roman;font-size:10pt;">earnings impact.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;margin-left:0px;">(PPL and PPL Energy Supply)</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">The most significant ARO recorded by PPL and PPL Energy Supply relates to the decommissioning of the Susquehanna nuclear plant. The accrued nuclear decommissioning obligation was $</font><font style="font-family:Times New Roman;font-size:10pt;">329</font><font style="font-family:Times New Roman;font-size:10pt;"> </font><font style="font-family:Times New Roman;font-size:10pt;">million and $</font><font style="font-family:Times New Roman;font-size:10pt;">316</font><font style="font-family:Times New Roman;font-size:10pt;"> million at June 30, 2013 and December 31, 2012</font><font style="font-family:Times New Roman;font-size:10pt;">.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">Assets in the NDT funds are legally restricted for purposes of settling PPL</font><font style="font-family:Times New Roman;font-size:10pt;">'</font><font style="font-family:Times New Roman;font-size:10pt;">s and PPL Energy Supply</font><font style="font-family:Times New Roman;font-size:10pt;">'</font><font style="font-family:Times New Roman;font-size:10pt;">s ARO related to the decommissioning of the </font><font style="font-family:Times New Roman;font-size:10pt;">PPL </font><font style="font-family:Times New Roman;font-size:10pt;">Susquehanna</font><font style="font-family:Times New Roman;font-size:10pt;"> nuclear</font><font style="font-family:Times New Roman;font-size:10pt;"> </font><font style="font-family:Times New Roman;font-size:10pt;">plant</font><font style="font-family:Times New Roman;font-size:10pt;">. The aggregate fair value of these assets was $</font><font style="font-family:Times New Roman;font-size:10pt;">771</font><font style="font-family:Times New Roman;font-size:10pt;"> million and $</font><font style="font-family:Times New Roman;font-size:10pt;">712 </font><font style="font-family:Times New Roman;font-size:10pt;">million at June 30, 2013 and December 31, 2012, and is included in </font><font style="font-family:Times New Roman;font-size:10pt;">"</font><font style="font-family:Times New Roman;font-size:10pt;">Nuclear plant decommissioning trust funds</font><font style="font-family:Times New Roman;font-size:10pt;">"</font><font style="font-family:Times New Roman;font-size:10pt;"> on the Balance Sheets. See Notes </font><font style="font-family:Times New Roman;font-size:10pt;">13</font><font style="font-family:Times New Roman;font-size:10pt;"> and </font><font style="font-family:Times New Roman;font-size:10pt;">17</font><font style="font-family:Times New Roman;font-size:10pt;"> for additional information on these assets</font><font style="font-family:Times New Roman;font-size:10pt;">.</font><font style="font-family:Times New Roman;font-size:10pt;"> </font></p>falsefalsefalse | nonnum:textBlockItemTypenaThe entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7569-110849
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 143
-Paragraph 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
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