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v3.20.1

Segment and Related Information (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 USD ($) Integer | Mar. 31, 2019 USD ($) | Dec. 31, 2019 USD ($)
Income Statement Data [Abstract] |  |  |  |
Operating Revenues from external customers |  | $ 2,054 | $ 2,079 |
Net Income |  | 554 | 466 |
Balance Sheet Data [Abstract] |  |  |  |
Assets |  | 46,328 |  | $ 45,680
Segment (Numeric) [Abstract] |  |  |  |
Goodwill |  | 3,178 |  | 3,198
U.K. Regulated [Member] |  |  |  |
Income Statement Data [Abstract] |  |  |  |
Operating Revenues from external customers |  | 614 | 583 |
Net Income |  | 340 | 264 |
Balance Sheet Data [Abstract] |  |  |  |
Assets |  | 17,918 |  | 17,622
Segment (Numeric) [Abstract] |  |  |  |
Net property, plant and equipment not subject to accounting for the effects of certain types of regulation |  | 13,300 |  | 13,200
Goodwill |  | 2,500 |  | 2,500
Kentucky Regulated [Member] |  |  |  |
Income Statement Data [Abstract] |  |  |  |
Operating Revenues from external customers |  | 825 | 845 |
Net Income |  | 127 | 117 |
Balance Sheet Data [Abstract] |  |  |  |
Assets |  | 15,608 |  | 15,597
Pennsylvania Regulated [Member] |  |  |  |
Income Statement Data [Abstract] |  |  |  |
Operating Revenues from external customers |  | 608 | 645 |
Net Income |  | 118 | 121 |
Balance Sheet Data [Abstract] |  |  |  |
Assets |  | 11,898 |  | 11,918
Corporate and Other [Member] |  |  |  |
Income Statement Data [Abstract] |  |  |  |
Operating Revenues from external customers |  | 7 | 6 |
Net Income |  | (31) | (36) |
Balance Sheet Data [Abstract] |  |  |  |
Assets |  | 904 |  | 543
PPL Electric Utilities Corp [Member] |  |  |  |
Income Statement Data [Abstract] |  |  |  |
Operating Revenues from external customers |  | 608 | 645 |
Net Income | [1] | 118 | 121 |
Balance Sheet Data [Abstract] |  |  |  |
Assets |  | $ 11,882 |  | 11,901
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 |  | $ 825 | 845 |
Net Income | [2] | 135 | 124 |
Balance Sheet Data [Abstract] |  |  |  |
Assets |  | 15,942 |  | 15,931
Segment (Numeric) [Abstract] |  |  |  |
Goodwill |  | $ 996 |  | 996
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 |  | $ 407 | 410 |
Net Income | [3] | 73 | 64 |
Balance Sheet Data [Abstract] |  |  |  |
Assets |  | 7,125 |  | 7,133
Segment (Numeric) [Abstract] |  |  |  |
Goodwill |  | $ 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 |  | $ 432 | 450 |
Net Income | [4] | 80 | $ 81 |
Balance Sheet Data [Abstract] |  |  |  |
Assets |  | 8,907 |  | 8,825
Segment (Numeric) [Abstract] |  |  |  |
Goodwill |  | $ 607 |  | $ 607
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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