v3.26.1
Segment and Related Information (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Integer
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Income Statement Data [Abstract]          
Revenues $ 2,111 $ 2,025 $ 4,885 $ 4,529  
Fuel 195 192 469 426  
Energy purchases 403 388 1,106 947  
Depreciation 362 324 713 646  
Taxes, other than income 104 101 226 214  
Other Income (Expense) - net (43) (23) (82) (51)  
Interest Expense 232 199 456 389  
Income Taxes 56 47 164 149  
Net income (loss) 230 183 682 597  
Balance Sheet Data [Abstract]          
Total Assets 46,301   46,301   $ 45,244
Segment (Numeric) [Abstract]          
Goodwill 2,247   $ 2,247   2,247
Number of Reportable Segments | Integer     3    
Segment Reporting, Long-Lived Asset, Expenditure for Addition     $ 2,346 1,723  
Amortization     65 49  
Deferred income taxes and investment tax credits     137 104  
Defined benefit plans - non-service credits 6 7 12 15  
Total Segments          
Income Statement Data [Abstract]          
Revenues 2,111 2,024 4,885 4,528  
Fuel 195 192 469 426  
Energy purchases 402 389 1,106 949  
Utilities Operating Expense, Maintenance and Operations 566 573 1,140 1,135  
Depreciation 361 323 709 643  
Taxes, other than income 105 100 226 213  
Other Income (Expense) - net 36 17 (69) (43)  
Interest Expense 174 151 345 294  
Income Taxes 72 66 198 191  
Net income (loss) 273 248 763 725  
Segment (Numeric) [Abstract]          
Segment Reporting, Long-Lived Asset, Expenditure for Addition     2,288 1,722  
Amortization     57 43  
Deferred income taxes and investment tax credits     94 77  
Total Segments | Related Party          
Segment (Numeric) [Abstract]          
Interest Income from affiliate 1 1 (2) (5)  
Rhode Island Regulated          
Income Statement Data [Abstract]          
Revenues 479 494 1,075 1,120  
Fuel   0 0 0  
Energy purchases 164 190 411 425  
Utilities Operating Expense, Maintenance and Operations 194 214 385 414  
Depreciation 49 44 97 86  
Taxes, other than income 40 42 86 89  
Other Income (Expense) - net 9 (4) (19) 3  
Interest Expense 30 27 63 50  
Income Taxes 1 (9) 6 9  
Net income (loss) 10 (17) 46 53  
Balance Sheet Data [Abstract]          
Total Assets 8,075   8,075   7,510
Segment (Numeric) [Abstract]          
Segment Reporting, Long-Lived Asset, Expenditure for Addition     435 336  
Amortization     1 0  
Deferred income taxes and investment tax credits     46 18  
Rhode Island Regulated | Related Party          
Segment (Numeric) [Abstract]          
Interest Income from affiliate 0 1 0 3  
Pennsylvania Regulated [Member]          
Income Statement Data [Abstract]          
Revenues 744 693 1,715 1,512  
Fuel   0 0 0  
Energy purchases 213 169 544 398  
Utilities Operating Expense, Maintenance and Operations 158 159 348 321  
Depreciation 110 100 218 202  
Taxes, other than income 36 32 84 73  
Other Income (Expense) - net 14 11 (26) 22  
Interest Expense 73 62 140 122  
Income Taxes 37 43 93 97  
Net income (loss) 132 139 316 323  
Balance Sheet Data [Abstract]          
Total Assets 18,043   18,043   16,886
Segment (Numeric) [Abstract]          
Segment Reporting, Long-Lived Asset, Expenditure for Addition     801 697  
Amortization     29 21  
Deferred income taxes and investment tax credits     41 48  
Pennsylvania Regulated [Member] | Related Party          
Segment (Numeric) [Abstract]          
Interest Income from affiliate 1 0 (2) 2  
Kentucky Regulated [Member]          
Income Statement Data [Abstract]          
Revenues 888 837 2,095 1,896  
Fuel 195 192 469 426  
Energy purchases 25 30 151 126  
Utilities Operating Expense, Maintenance and Operations 214 200 407 400  
Depreciation 202 179 394 355  
Taxes, other than income 29 26 56 51  
Other Income (Expense) - net 13 10 (24) 18  
Interest Expense 71 62 142 122  
Income Taxes 34 32 99 85  
Net income (loss) 131 126 401 349  
Balance Sheet Data [Abstract]          
Total Assets 19,604   19,604   19,060
Segment (Numeric) [Abstract]          
Segment Reporting, Long-Lived Asset, Expenditure for Addition     1,052 689  
Amortization     27 22  
Deferred income taxes and investment tax credits     7 11  
Kentucky Regulated [Member] | Related Party          
Segment (Numeric) [Abstract]          
Interest Income from affiliate 0 0 0 0  
Corporate and Other [Member]          
Income Statement Data [Abstract]          
Revenues 0 1 0 1  
Income Taxes (16) (19) (34) (42)  
Net income (loss) (43) (65) (81) (128)  
Balance Sheet Data [Abstract]          
Total Assets 579   579   1,788
Segment (Numeric) [Abstract]          
Segment Reporting, Long-Lived Asset, Expenditure for Addition     58 1  
Amortization     8 6  
Deferred income taxes and investment tax credits     43 27  
PPL Electric Utilities Corp [Member]          
Income Statement Data [Abstract]          
Revenues 744 693 1,715 1,512  
Energy purchases 213 169 544 398  
Depreciation 110 100 218 202  
Taxes, other than income 36 32 84 73  
Other Income (Expense) - net (14) (11) (26) (22)  
Interest Expense 73 62 140 122  
Income Taxes 37 43 93 97  
Net income (loss) [1] 132 139 316 323  
Balance Sheet Data [Abstract]          
Total Assets 18,043   $ 18,043   16,886
Segment (Numeric) [Abstract]          
Number of Reportable Segments | Integer     1    
Number of Operating Segments | Integer     2    
Amortization     $ 29 21  
Deferred income taxes and investment tax credits     41 48  
Defined benefit plans - non-service credits 2 4 3 7  
PPL Electric Utilities Corp [Member] | Related Party          
Segment (Numeric) [Abstract]          
Interest Income from affiliate (1) 0 (2) (2)  
Louisville Gas And Electric Co [Member]          
Income Statement Data [Abstract]          
Revenues 398 378 995 883  
Fuel 66 75 167 157  
Energy purchases 20 23 139 111  
Depreciation 87 77 170 151  
Taxes, other than income 14 13 28 26  
Other Income (Expense) - net (6) (5) (12) (8)  
Interest Expense 32 27 64 53  
Income Taxes 16 14 49 40  
Net income (loss) 60 [2] 56 192 [2] 161 [2]  
Balance Sheet Data [Abstract]          
Total Assets 8,970   8,970   8,818
Segment (Numeric) [Abstract]          
Goodwill 389   $ 389   389
Number of Reportable Segments | Integer     1    
Number of Operating Segments | Integer     1    
Amortization     $ 10 11  
Defined benefit plans - non-service credits 0 1 (1) 1  
Kentucky Utilities Co [Member]          
Income Statement Data [Abstract]          
Revenues 505 472 1,130 1,036  
Fuel 128 117 301 269  
Energy purchases 7 7 13 14  
Depreciation 114 101 224 203  
Taxes, other than income 14 13 27 25  
Other Income (Expense) - net (6) (5) (13) (10)  
Interest Expense     80 70  
Income Taxes 19 19 55 50  
Net income (loss) [3] 79 78 223 203  
Balance Sheet Data [Abstract]          
Total Assets 11,107   11,107   10,758
Segment (Numeric) [Abstract]          
Goodwill 607   $ 607   $ 607
Number of Reportable Segments | Integer     1    
Number of Operating Segments | Integer     1    
Amortization     $ 15 8  
Deferred income taxes and investment tax credits     0 4  
Defined benefit plans - non-service credits $ 1 $ 2 $ 2 $ 3  
[1] Net income equals comprehensive income.
[2] Net income equals comprehensive income.
[3] Net income equals comprehensive income.