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v3.19.2

Segment and Related Information (Details) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2019 USD ($) Integer | Jun. 30, 2018 USD ($) | Dec. 31, 2018 USD ($)
Income Statement Data [Abstract] |  |  |  |  |  |  |  |  |  |
Operating Revenues from external customers |  | $ 1,803 |  | $ 1,848 |  | $ 3,882 |  | $ 3,974 |  |
Net Income |  | 441 |  | 515 |  | 907 |  | 967 |  |
Balance Sheet Data [Abstract] |  |  |  |  |  |  |  |  |  |
Assets |  | 44,204 |  |  |  | 44,204 |  |  |  | $ 43,396
U.K. Regulated [Member] |  |  |  |  |  |  |  |  |  |
Income Statement Data [Abstract] |  |  |  |  |  |  |  |  |  |
Operating Revenues from external customers |  | 541 |  | 584 |  | 1,124 |  | 1,199 |  |
Net Income |  | 284 |  | 394 |  | 548 |  | 591 |  |
Balance Sheet Data [Abstract] |  |  |  |  |  |  |  |  |  |
Assets |  | 17,134 |  |  |  | 17,134 |  |  |  | 16,700
Segment (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Net property, plant and equipment not subject to accounting for the effects of certain types of regulation |  | 12,600 |  |  |  | 12,600 |  |  |  | 12,400
Kentucky Regulated [Member] |  |  |  |  |  |  |  |  |  |
Income Statement Data [Abstract] |  |  |  |  |  |  |  |  |  |
Operating Revenues from external customers |  | 732 |  | 743 |  | 1,577 |  | 1,615 |  |
Net Income |  | 97 |  | 77 |  | 214 |  | 210 |  |
Balance Sheet Data [Abstract] |  |  |  |  |  |  |  |  |  |
Assets |  | 15,296 |  |  |  | 15,296 |  |  |  | 15,078
Pennsylvania Regulated [Member] |  |  |  |  |  |  |  |  |  |
Income Statement Data [Abstract] |  |  |  |  |  |  |  |  |  |
Operating Revenues from external customers |  | 521 |  | 517 |  | 1,166 |  | 1,156 |  |
Net Income |  | 94 |  | 75 |  | 215 |  | 223 |  |
Balance Sheet Data [Abstract] |  |  |  |  |  |  |  |  |  |
Assets |  | 11,371 |  |  |  | 11,371 |  |  |  | 11,257
Corporate and Other [Member] |  |  |  |  |  |  |  |  |  |
Income Statement Data [Abstract] |  |  |  |  |  |  |  |  |  |
Operating Revenues from external customers |  | 9 |  | 4 |  | 15 |  | 4 |  |
Net Income |  | (34) |  | (31) |  | (70) |  | (57) |  |
Balance Sheet Data [Abstract] |  |  |  |  |  |  |  |  |  |
Assets |  | 403 |  |  |  | 403 |  |  |  | 361
PPL Electric Utilities Corp [Member] |  |  |  |  |  |  |  |  |  |
Income Statement Data [Abstract] |  |  |  |  |  |  |  |  |  |
Operating Revenues from external customers |  | 521 |  | 517 |  | 1,166 |  | 1,156 |  |
Net Income | [1] | 94 |  | 75 |  | 215 |  | 223 |  |
Balance Sheet Data [Abstract] |  |  |  |  |  |  |  |  |  |
Assets |  | 11,354 |  |  |  | $ 11,354 |  |  |  | 11,243
Segment (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Number of Reportable Segments | Integer |  |  |  |  |  | 1 |  |  |  |
Number of Operating Segments | Integer |  |  |  |  |  | 2 |  |  |  |
LG And E And KU Energy LLC [Member] |  |  |  |  |  |  |  |  |  |
Income Statement Data [Abstract] |  |  |  |  |  |  |  |  |  |
Operating Revenues from external customers |  | 732 |  | 743 |  | $ 1,577 |  | 1,615 |  |
Net Income | [2] | 106 |  | 86 |  | 230 |  | 228 |  |
Balance Sheet Data [Abstract] |  |  |  |  |  |  |  |  |  |
Assets |  | 15,630 |  |  |  | $ 15,630 |  |  |  | 15,412
Segment (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Number of Reportable Segments | Integer |  |  |  |  |  | 1 |  |  |  |
Number of Operating Segments | Integer |  |  |  |  |  | 1 |  |  |  |
Louisville Gas And Electric Co [Member] |  |  |  |  |  |  |  |  |  |
Income Statement Data [Abstract] |  |  |  |  |  |  |  |  |  |
Operating Revenues from external customers |  | 334 |  | 335 |  | $ 744 |  | 754 |  |
Net Income |  | 44 | [1] | 50 | [1] | 108 | [3] | 122 | [3] |
Balance Sheet Data [Abstract] |  |  |  |  |  |  |  |  |  |
Assets |  | 6,939 |  |  |  | $ 6,939 |  |  |  | 6,883
Segment (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Number of Reportable Segments | Integer |  |  |  |  |  | 1 |  |  |  |
Number of Operating Segments | Integer |  |  |  |  |  | 1 |  |  |  |
Kentucky Utilities Co [Member] |  |  |  |  |  |  |  |  |  |
Income Statement Data [Abstract] |  |  |  |  |  |  |  |  |  |
Operating Revenues from external customers |  | 406 |  | 414 |  | $ 856 |  | 885 |  |
Net Income | [4] | 61 |  | $ 61 |  | 142 |  | $ 148 |  |
Balance Sheet Data [Abstract] |  |  |  |  |  |  |  |  |  |
Assets |  | $ 8,691 |  |  |  | $ 8,691 |  |  |  | $ 8,540
Segment (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Number of Reportable Segments | Integer |  |  |  |  |  | 1 |  |  |  |
Number of Operating Segments | Integer |  |  |  |  |  | 1 |  |  |  |
[1] | Net income equals comprehensive income.
[2] | Net income approximates comprehensive income.
[3] | Net income equals comprehensive income.
[4] | Net income equals comprehensive income.

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