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Financing Activities (Tables) | 3 Months Ended
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Mar. 31, 2017
Debt Disclosure [Abstract] |
Schedule of Line of Credit Facilities | The following credit facilities were in place at:
| March 31, 2017 |  | December 31, 2016
| Expiration Date |  | Capacity |  | Borrowed |  | Letters of Credit and Commercial Paper Issued |  | Unused Capacity |  | Borrowed |  | Letters of Credit and Commercial Paper Issued
PPL |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.K. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
WPD plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Syndicated Credit Facility (a) | Jan. 2022 |  | £ | 210 |  |  | £ | 161 |  |  | £ | — |  |  | £ | 49 |  |  | £ | 160 |  |  | £ | — |
Term Loan Facility (b) | Dec. 2017 |  | 230 |  |  | 230 |  |  | — |  |  | — |  |  | — |  |  | — |
WPD (South West) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Syndicated Credit Facility (c) | July 2021 |  | 245 |  |  | 72 |  |  | — |  |  | 173 |  |  | 110 |  |  | — |
WPD (East Midlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Syndicated Credit Facility (d) | July 2021 |  | 300 |  |  | 128 |  |  | — |  |  | 172 |  |  | 9 |  |  | — |
WPD (West Midlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Syndicated Credit Facility | July 2021 |  | 300 |  |  | — |  |  | — |  |  | 300 |  |  | — |  |  | — |
Uncommitted Credit Facilities (e) |  |  | 90 |  |  | — |  |  | 4 |  |  | 86 |  |  | 60 |  |  | 4 |
Total U.K. Credit Facilities (f) |  |  | £ | 1,375 |  |  | £ | 591 |  |  | £ | 4 |  |  | £ | 780 |  |  | £ | 339 |  |  | £ | 4 |
U.S. |  |  |  |  |  |  |  |  |  |  |  |  |
PPL Capital Funding |  |  |  |  |  |  |  |  |  |  |  |  |
Syndicated Credit Facility | Jan. 2022 |  | $ | 950 |  |  | $ | — |  |  | $ | 189 |  |  | $ | 761 |  |  | $ | — |  |  | $ | 20 |
Syndicated Credit Facility | Nov. 2018 |  | 300 |  |  | — |  |  | — |  |  | 300 |  |  | — |  |  | — |
Bilateral Credit Facility | Mar. 2018 |  | 150 |  |  | — |  |  | 17 |  |  | 133 |  |  | — |  |  | 17 |
Total PPL Capital Funding Credit Facilities |  |  | $ | 1,400 |  |  | $ | — |  |  | $ | 206 |  |  | $ | 1,194 |  |  | $ | — |  |  | $ | 37 |
| March 31, 2017 |  | December 31, 2016
| Expiration Date |  | Capacity |  | Borrowed |  | Letters of Credit and Commercial Paper Issued |  | Unused Capacity |  | Borrowed |  | Letters of Credit and Commercial Paper Issued
PPL Electric |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Syndicated Credit Facility | Jan. 2022 |  | $ | 650 |  |  | $ | — |  |  | $ | 500 |  |  | $ | 150 |  |  | $ | — |  |  | $ | 296 |
LKE |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Syndicated Credit Facility | Oct. 2018 |  | $ | 75 |  |  | $ | — |  |  | $ | — |  |  | $ | 75 |  |  | $ | — |  |  | $ | — |
LG&E |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Syndicated Credit Facility | Jan. 2022 |  | $ | 500 |  |  | $ | — |  |  | $ | 207 |  |  | $ | 293 |  |  | $ | — |  |  | $ | 169 |
KU |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Syndicated Credit Facility | Jan. 2022 |  | $ | 400 |  |  | $ | — |  |  | $ | 36 |  |  | $ | 364 |  |  | $ | — |  |  | $ | 16 |
Letter of Credit Facility | Oct. 2017 |  | 198 |  |  | — |  |  | 198 |  |  | — |  |  | — |  |  | 198 |
Total KU Credit Facilities |  |  | $ | 598 |  |  | $ | — |  |  | $ | 234 |  |  | $ | 364 |  |  | $ | — |  |  | $ | 214 |
(a) | The amounts borrowed at March 31, 2017 and December 31, 2016 were USD-denominated borrowings of $200 million for both periods, which bore interest at 1.61% and 1.43%. The unused capacity reflects the amount borrowed in GBP of £161 million as of the date borrowed.
(b) | The amount borrowed at March 31, 2017 was a GBP-denominated borrowing which equated to $286 million and bore interest at 1.51%.
(c) | The amounts borrowed at March 31, 2017 and December 31, 2016 were GBP-denominated borrowings which equated to $90 million and $137 million and bore interest at 0.66% for both periods.
(d) | The amounts borrowed at March 31, 2017 and December 31, 2016 were GBP-denominated borrowings which equated to $159 million and $11 million and bore interest at 0.66% for both periods.
(e) | The amount borrowed at December 31, 2016 was a GBP-denominated borrowing which equated to $75 million and bore interest at 1.26%.
(f) | At March 31, 2017, the unused capacity under the U.K. credit facilities was $972 million.
Schedule of Short-term Debt | The following commercial paper programs were in place at:
| March 31, 2017 |  | December 31, 2016
| Weighted - Average Interest Rate |  | Capacity |  | Commercial Paper Issuances |  | Unused Capacity |  | Weighted - Average Interest Rate |  | Commercial Paper Issuances
PPL Capital Funding | 1.25% |  | $ | 1,000 |  |  | $ | 189 |  |  | $ | 811 |  |  | 1.10% |  | $ | 20 |
PPL Electric | 1.26% |  | 650 |  |  | 499 |  |  | 151 |  |  | 1.05% |  | 295 |
LG&E | 1.19% |  | 350 |  |  | 207 |  |  | 143 |  |  | 0.94% |  | 169 |
KU | 1.18% |  | 350 |  |  | 36 |  |  | 314 |  |  | 0.87% |  | 16 |
Total |  |  | $ | 2,350 |  |  | $ | 931 |  |  | $ | 1,419 |  |  |  |  | $ | 500 |
Schedule Of Stock Offering Program | For the periods ended March 31, PPL issued the following:
| Three Months
| 2017 |  | 2016
Number of shares (in thousands) | 1,364 |  |  | — |
Average share price | $ | 36.66 |  |  | $ | — |
Net Proceeds | $ | 50 |  |  | $ | — |

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