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v3.21.2

Segment and Related Information (Details) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) Integer | Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($)
Income Statement Data [Abstract] |  |  |  |  |  |
Operating Revenues from external customers |  | $ 1,288 | $ 1,263 | $ 2,786 | $ 2,703 |
Net income (loss) |  | 19 | 344 | (1,821) | 898 |
Balance Sheet Data [Abstract] |  |  |  |  |  |
Assets |  | 36,759 |  | 36,759 |  | $ 48,116
Segment (Numeric) [Abstract] |  |  |  |  |  |
Goodwill |  | 716 |  | 716 |  | 716
Kentucky Regulated [Member] |  |  |  |  |  |
Income Statement Data [Abstract] |  |  |  |  |  |
Operating Revenues from external customers |  | 741 | 700 | 1,626 | 1,525 |
Net income (loss) |  | 84 | 74 | 230 | 201 |
Financing Costs Allocated to Segment, Net of Tax |  |  | 10 |  | 21 |
Income Taxes Allocated to Segment |  |  | 2 |  | 4 |
Balance Sheet Data [Abstract] |  |  |  |  |  |
Assets |  | 16,282 |  | 16,282 |  | 15,943
Pennsylvania Regulated [Member] |  |  |  |  |  |
Income Statement Data [Abstract] |  |  |  |  |  |
Operating Revenues from external customers |  | 537 | 554 | 1,142 | 1,162 |
Net income (loss) |  | 96 | 118 | 209 | 236 |
Balance Sheet Data [Abstract] |  |  |  |  |  |
Assets |  | 13,814 |  | 13,814 |  | 12,347
Corporate and Other [Member] |  |  |  |  |  |
Income Statement Data [Abstract] |  |  |  |  |  |
Operating Revenues from external customers |  | 10 | 9 | 18 | 16 |
Net income (loss) |  | (716) | (39) | (772) | (80) |
Balance Sheet Data [Abstract] |  |  |  |  |  |
Assets |  | 6,663 |  | 6,663 |  | 843
DiscontinuedOperationsSegment |  |  |  |  |  |
Income Statement Data [Abstract] |  |  |  |  |  |
Net income (loss) |  | 555 | 191 | (1,488) | 541 |
Balance Sheet Data [Abstract] |  |  |  |  |  |
Assets |  | 0 |  | 0 |  | 18,983
PPL Electric Utilities Corp [Member] |  |  |  |  |  |
Income Statement Data [Abstract] |  |  |  |  |  |
Operating Revenues from external customers |  | 537 | 554 | 1,142 | 1,162 |
Net income (loss) | [1] | 96 | 118 | 209 | 236 |
Balance Sheet Data [Abstract] |  |  |  |  |  |
Assets |  | 13,784 |  | $ 13,784 |  | 12,324
Segment (Numeric) [Abstract] |  |  |  |  |  |
Number of Reportable Segments | Integer |  |  |  | 1 |  |
Number of Operating Segments | Integer |  |  |  | 2 |  |
Louisville Gas And Electric Co [Member] |  |  |  |  |  |
Income Statement Data [Abstract] |  |  |  |  |  |
Operating Revenues from external customers |  | 342 | 322 | $ 770 | 729 |
Net income (loss) | [2] | 45 | 47 | 120 | 120 |
Balance Sheet Data [Abstract] |  |  |  |  |  |
Assets |  | 7,380 |  | 7,380 |  | 7,345
Segment (Numeric) [Abstract] |  |  |  |  |  |
Goodwill |  | 389 |  | $ 389 |  | 389
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 |  | 411 | 388 | $ 880 | 820 |
Net income (loss) | [3] | 56 | $ 53 | 142 | $ 133 |
Balance Sheet Data [Abstract] |  |  |  |  |  |
Assets |  | 9,148 |  | 9,148 |  | 9,072
Segment (Numeric) [Abstract] |  |  |  |  |  |
Goodwill |  | $ 607 |  | $ 607 |  | $ 607
Number of Reportable Segments | Integer |  |  |  | 1 |  |
Number of Operating Segments | Integer |  |  |  | 1 |  |
[1] | Net income equals comprehensive income.
[2] | Net income equals comprehensive income.
[3] | Net income equals comprehensive income.

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