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Segment and Related Information | 12 Months Ended
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Dec. 31, 2017
Segment Reporting [Abstract] |
Segment and Related Information | 2. Segment and Related Information (PPL) PPL is organized into three segments: U.K. Regulated, Kentucky Regulated and Pennsylvania Regulated. PPL's segments are segmented by geographic location. The U.K. Regulated segment consists of PPL Global, which primarily includes WPD's regulated electricity distribution operations, the results of hedging the translation of WPD's earnings from GBP into U.S. dollars, and certain costs, such as U.S. income taxes, administrative costs, and certain acquisition-related financing costs. The Kentucky Regulated segment consists primarily of LKE's regulated electricity generation, transmission and distribution operations of LG&E and KU, as well as LG&E's regulated distribution and sale of natural gas. In addition, certain acquisition-related financing costs are allocated to the Kentucky Regulated segment. The Pennsylvania Regulated segment includes the regulated electricity transmission and distribution operations of PPL Electric. In addition, certain costs are allocated to the Pennsylvania Regulated segment. "Corporate and Other" primarily includes financing costs incurred at the corporate level that have not been allocated or assigned to the segments, as well as certain other unallocated costs, which is presented to reconcile segment information to PPL's consolidated results. On June 1, 2015, PPL completed the spinoff of PPL Energy Supply, which substantially represented PPL's Supply segment. As a result of this transaction, PPL no longer has a Supply segment and its results are presented in "Discontinued Operations". See Note 8 for additional information. Income Statement data for the segments and reconciliation to PPL's consolidated results for the years ended December 31 are as follows:
| 2017 |  | 2016 |  | 2015
Operating Revenues from external customers (a) |  |  |  |  |
U.K. Regulated | $ | 2,091 |  |  | $ | 2,207 |  |  | $ | 2,410 |
Kentucky Regulated | 3,156 |  |  | 3,141 |  |  | 3,115 |
Pennsylvania Regulated | 2,195 |  |  | 2,156 |  |  | 2,124 |
Corporate and Other | 5 |  |  | 13 |  |  | 20 |
Total | $ | 7,447 |  |  | $ | 7,517 |  |  | $ | 7,669 |
Depreciation |  |  |  |  |  |  |
U.K. Regulated | $ | 230 |  |  | $ | 233 |  |  | $ | 242 |
Kentucky Regulated | 439 |  |  | 404 |  |  | 382 |
Pennsylvania Regulated | 309 |  |  | 253 |  |  | 214 |
Corporate and Other | 30 |  |  | 36 |  |  | 45 |
Total | $ | 1,008 |  |  | $ | 926 |  |  | $ | 883 |
Amortization (b) |  |  |  |  |  |  |  |
U.K. Regulated | $ | 34 |  |  | $ | 16 |  |  | $ | 6 |
Kentucky Regulated | 24 |  |  | 29 |  |  | 27 |
Pennsylvania Regulated | 33 |  |  | 32 |  |  | 26 |
Corporate and Other | 6 |  |  | 3 |  |  | — |
Total | $ | 97 |  |  | $ | 80 |  |  | $ | 59 |
Unrealized (gains) losses on derivatives and other hedging activities (c) |  |  |  |  |  |
U.K. Regulated | $ | 166 |  |  | $ | 13 |  |  | $ | (88 | )
Kentucky Regulated | 6 |  |  | 6 |  |  | 11 |
Corporate and Other | 6 |  |  | — |  |  | — |
Total | $ | 178 |  |  | $ | 19 |  |  | $ | (77 | )
Interest Expense |  |  |  |  |  |  |  |
U.K. Regulated | $ | 397 |  |  | $ | 402 |  |  | $ | 417 |
Kentucky Regulated | 261 |  |  | 260 |  |  | 232 |
Pennsylvania Regulated | 142 |  |  | 129 |  |  | 130 |
Corporate and Other | 101 |  |  | 97 |  |  | 92 |
Total | $ | 901 |  |  | $ | 888 |  |  | $ | 871 |
Income from Continuing Operations Before Income Taxes |  |  |  |  |  |  |  |
U.K. Regulated | $ | 804 |  |  | $ | 1,479 |  |  | $ | 1,249 |
Kentucky Regulated | 645 |  |  | 640 |  |  | 547 |
Pennsylvania Regulated | 575 |  |  | 550 |  |  | 416 |
Corporate and Other (d) | (112 | ) |  | (119 | ) |  | (144 | )
Total | $ | 1,912 |  |  | $ | 2,550 |  |  | $ | 2,068 |
Income Taxes (e) |  |  |  |  |  |  |  |
U.K. Regulated | $ | 152 |  |  | $ | 233 |  |  | $ | 128 |
Kentucky Regulated | 359 |  |  | 242 |  |  | 221 |
Pennsylvania Regulated | 216 |  |  | 212 |  |  | 164 |
Corporate and Other (d) | 57 |  |  | (39 | ) |  | (48 | )
Total | $ | 784 |  |  | $ | 648 |  |  | $ | 465 |
Deferred income taxes and investment tax credits (f) |  |  |  |  |  |  |  |
U.K. Regulated | $ | 66 |  |  | $ | 31 |  |  | $ | 45 |
Kentucky Regulated | 294 |  |  | 291 |  |  | 236 |
Pennsylvania Regulated | 257 |  |  | 221 |  |  | 220 |
Corporate and Other (d) | 90 |  |  | 17 |  |  | (73 | )
Total | $ | 707 |  |  | $ | 560 |  |  | $ | 428 |
| 2017 |  | 2016 |  | 2015
Net Income |  |  |  |  |  |  |  |
U.K. Regulated | $ | 652 |  |  | $ | 1,246 |  |  | $ | 1,121 |
Kentucky Regulated | 286 |  |  | 398 |  |  | 326 |
Pennsylvania Regulated | 359 |  |  | 338 |  |  | 252 |
Corporate and Other (d) | (169 | ) |  | (80 | ) |  | (96 | )
Discontinued Operations (g) | — |  |  | — |  |  | (921 | )
Total | $ | 1,128 |  |  | $ | 1,902 |  |  | $ | 682 |
(a) | See Note 1 for additional information on Operating Revenues.
(b) | Represents non-cash expense items that include amortization of regulatory assets, debt discounts and premiums, debt issuance costs, emission allowances and RECs.
(c) | Includes unrealized gains and losses from economic activity. See Note 17 for additional information.
(d) | 2015 includes certain costs related to the spinoff of PPL Energy Supply, including deferred income tax expense, transition costs and separation benefits for PPL Services employees. See Note 8 for additional information.
(e) | Represents both current and deferred income taxes, including investment tax credits. See Note 5 for additional information on the impact of the TCJA in 2017.
(f) | Represents a non-cash expense item that is also included in "Income Taxes."
(g) | 2015 includes an $879 million loss on the spinoff of PPL Energy Supply and five months of Supply segment earnings. See Note 8 for additional information on these transactions.
Cash Flow data for the segments and reconciliation to PPL's consolidated results for the years ended December 31 are as follows:
| 2017 |  | 2016 |  | 2015
Expenditures for long-lived assets |  |  |  |  |  |  |  |
U.K. Regulated | $ | 1,015 |  |  | $ | 1,031 |  |  | $ | 1,242 |
Kentucky Regulated | 892 |  |  | 791 |  |  | 1,210 |
Pennsylvania Regulated | 1,254 |  |  | 1,134 |  |  | 1,107 |
Corporate and Other | 10 |  |  | 1 |  |  | 11 |
Total | $ | 3,171 |  |  | $ | 2,957 |  |  | $ | 3,570 |
The following provides Balance Sheet data for the segments and reconciliation to PPL's consolidated results as of:
| As of December 31,
| 2017 |  | 2016
Total Assets |  |  |  |  |
U.K. Regulated (a) | $ | 16,813 |  |  | $ | 14,537 |
Kentucky Regulated | 14,468 |  |  | 14,037 |
Pennsylvania Regulated | 10,082 |  |  | 9,426 |
Corporate and Other (b) | 116 |  |  | 315 |
Total | $ | 41,479 |  |  | $ | 38,315 |
(a) | Includes $12.5 billion and $10.8 billion of net PP&E as of December 31, 2017 and December 31, 2016. WPD is not subject to accounting for the effects of certain types of regulation as prescribed by GAAP.
(b) | Primarily consists of unallocated items, including cash, PP&E and the elimination of inter-segment transactions.
Geographic data for the years ended December 31 are as follows:
| 2017 |  | 2016 |  | 2015
Revenues from external customers |  |  |  |  |  |  |  |
U.K. | $ | 2,091 |  |  | $ | 2,207 |  |  | $ | 2,410 |
U.S. | 5,356 |  |  | 5,310 |  |  | 5,259 |
Total | $ | 7,447 |  |  | $ | 7,517 |  |  | $ | 7,669 |
| As of December 31,
| 2017 |  | 2016
Long-Lived Assets |  |  |  |  |
U.K. | $ | 12,851 |  |  | $ | 11,177 |
U.S. | 20,936 |  |  | 19,595 |
Total | $ | 33,787 |  |  | $ | 30,772 |
(PPL Electric, LKE, LG&E and KU) PPL Electric has two operating segments that are aggregated into a single reportable segment. LKE, LG&E and KU are individually single operating and reportable segments.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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