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v3.20.4

Segment and Related Information (Income Statement and Balance Sheet Data) (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) Integer | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Income Statement Data |  |  |  |
Operating Revenues from external customers |  | $ 7,607 | $ 7,769 | $ 7,785
Depreciation |  | 1,287 | 1,199 | 1,094
Amortization |  | 72 | 81 | 78
Unrealized (gains) losses on derivatives and other hedging activities |  | 280 | 73 | (186)
Interest Expense |  | 1,001 | 994 | 963
Income Before Income Taxes |  | 1,971 | 2,155 | 2,285
Income Taxes |  | 502 | 409 | 458
Deferred income taxes and investment tax credits |  | 402 | 309 | 355
Net income |  | 1,469 | 1,746 | 1,827
Cash Flow Data |  |  |  |
Expenditures for long-lived assets |  | 3,273 | 3,107 | 3,268
Balance Sheet Data |  |  |  |
Total Assets |  | $ 48,116 | 45,680 |
Segment Information (Numeric) [Abstract] |  |  |  |
Number of reportable segments | Integer |  | 3 |  |
U.K. Regulated [Member] |  |  |  |
Income Statement Data |  |  |  |
Operating Revenues from external customers |  | $ 2,133 | 2,167 | 2,268
Depreciation |  | 265 | 250 | 247
Amortization |  | 16 | 25 | 34
Unrealized (gains) losses on derivatives and other hedging activities |  | 271 | 62 | (190)
Interest Expense |  | 400 | 405 | 413
Income Before Income Taxes |  | 958 | 1,169 | 1,339
Income Taxes |  | 272 | 192 | 225
Deferred income taxes and investment tax credits |  | 233 | 140 | 118
Net income |  | 686 | 977 | 1,114
Cash Flow Data |  |  |  |
Expenditures for long-lived assets |  | 995 | 857 | 954
Balance Sheet Data |  |  |  |
Total Assets |  | 19,094 | 17,622 |
Segment Information (Numeric) [Abstract] |  |  |  |
Net property, plant and equipment not subject to accounting for the effects of certain types of regulation |  | 14,400 | 13,200 |
Kentucky Regulated [Member] |  |  |  |
Income Statement Data |  |  |  |
Operating Revenues from external customers |  | 3,106 | 3,206 | 3,214
Depreciation |  | 606 | 547 | 475
Amortization |  | 19 | 27 | 18
Unrealized (gains) losses on derivatives and other hedging activities |  | 5 | 6 | 6
Interest Expense |  | 300 | 298 | 274
Income Before Income Taxes |  | 516 | 530 | 531
Income Taxes |  | 98 | 94 | 120
Deferred income taxes and investment tax credits |  | 64 | 82 | 94
Net income |  | 418 | 436 | 411
Cash Flow Data |  |  |  |
Expenditures for long-lived assets |  | 966 | 1,097 | 1,117
Balance Sheet Data |  |  |  |
Total Assets |  | 15,943 | 15,597 |
Pennsylvania Regulated [Member] |  |  |  |
Income Statement Data |  |  |  |
Operating Revenues from external customers |  | 2,330 | 2,358 | 2,277
Depreciation |  | 403 | 386 | 352
Amortization |  | 26 | 24 | 22
Interest Expense |  | 172 | 169 | 159
Income Before Income Taxes |  | 664 | 607 | 567
Income Taxes |  | 167 | 149 | 136
Deferred income taxes and investment tax credits |  | 82 | 90 | 125
Net income |  | 497 | 458 | 431
Cash Flow Data |  |  |  |
Expenditures for long-lived assets |  | 1,154 | 1,121 | 1,196
Balance Sheet Data |  |  |  |
Total Assets |  | 12,347 | 11,918 |
Corporate And Other [Member] |  |  |  |
Income Statement Data |  |  |  |
Operating Revenues from external customers |  | 38 | 38 | 26
Depreciation |  | 13 | 16 | 20
Amortization |  | 11 | 5 | 4
Unrealized (gains) losses on derivatives and other hedging activities |  | 4 | 5 | (2)
Interest Expense |  | 129 | 122 | 117
Income Before Income Taxes |  | (167) | (151) | (152)
Income Taxes |  | (35) | (26) | (23)
Deferred income taxes and investment tax credits |  | 23 | (3) | 18
Net income |  | (132) | (125) | (129)
Cash Flow Data |  |  |  |
Expenditures for long-lived assets |  | 158 | 32 | 1
Balance Sheet Data |  |  |  |
Total Assets |  | 732 | 543 |
PPL Electric Utilities Corp [Member] |  |  |  |
Income Statement Data |  |  |  |
Operating Revenues from external customers |  | 2,331 | 2,358 | 2,277
Depreciation |  | 403 | 386 | 352
Amortization |  | 26 | 24 | 22
Interest Expense |  | 173 | 170 | 159
Income Before Income Taxes |  | 664 | 606 | 566
Income Taxes |  | 167 | 149 | 136
Deferred income taxes and investment tax credits |  | 83 | 90 | 125
Net income | [1] | 497 | 457 | 430
Balance Sheet Data |  |  |  |
Total Assets |  | $ 12,324 | 11,901 |
Segment Information (Numeric) [Abstract] |  |  |  |
Number of operating segments | Integer |  | 2 |  |
Number of reportable segments | Integer |  | 1 |  |
LG And E And KU Energy LLC [Member] |  |  |  |
Income Statement Data |  |  |  |
Operating Revenues from external customers |  | $ 3,106 | 3,206 | 3,214
Depreciation |  | 606 | 547 | 475
Amortization |  | 19 | 27 | 18
Interest Expense |  | 223 | 226 | 206
Income Before Income Taxes |  | 556 | 571 | 574
Income Taxes |  | 106 | 103 | 129
Deferred income taxes and investment tax credits |  | 64 | 82 | 94
Net income |  | 450 | 468 | 445
Balance Sheet Data |  |  |  |
Total Assets |  | $ 16,277 | 15,931 |
Segment Information (Numeric) [Abstract] |  |  |  |
Number of operating segments | Integer |  | 1 |  |
Number of reportable segments | Integer |  | 1 |  |
Louisville Gas And Electric Co [Member] |  |  |  |
Income Statement Data |  |  |  |
Operating Revenues from external customers |  | $ 1,456 | 1,500 | 1,496
Depreciation |  | 259 | 231 | 195
Amortization |  | 9 | 15 | 14
Interest Expense |  | 87 | 87 | 76
Income Before Income Taxes |  | 306 | 295 | 297
Income Taxes |  | 62 | 63 | 64
Deferred income taxes and investment tax credits |  | 3 | 56 | 60
Net income | [2] | 244 | 232 | 233
Balance Sheet Data |  |  |  |
Total Assets |  | $ 7,345 | 7,133 |
Segment Information (Numeric) [Abstract] |  |  |  |
Number of operating segments | Integer |  | 1 |  |
Number of reportable segments | Integer |  | 1 |  |
Kentucky Utilities Co [Member] |  |  |  |
Income Statement Data |  |  |  |
Operating Revenues from external customers |  | $ 1,690 | 1,740 | 1,760
Depreciation |  | 346 | 315 | 279
Amortization |  | 8 | 10 | 3
Interest Expense |  | 113 | 109 | 100
Income Before Income Taxes |  | 343 | 372 | 362
Income Taxes |  | 63 | 79 | 76
Deferred income taxes and investment tax credits |  | 20 | 39 | 48
Net income | [3] | 280 | 293 | $ 286
Balance Sheet Data |  |  |  |
Total Assets |  | $ 9,072 | $ 8,825 |
Segment Information (Numeric) [Abstract] |  |  |  |
Number of operating segments | Integer |  | 1 |  |
Number of reportable 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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