v3.25.2
Segment Information (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Segment Reporting Information [Line Items]        
Net income $ 189 $ 131 $ 373 $ 342
Natural gas 110 90 470 363
Revenues Including Intersegment Revenues 1,450   3,106 2,856
Electric fuel and purchased power 465 464 960 923
Cost of natural gas sold and transported 45 23 261 162
Operating and maintenance expenses 343 328 690 627
Utilities Operating Expense, Depreciation and Amortization 286 272 579 540
Other income, net 9 3 8 8
Interest and Debt Expense 93 85 179 168
Income Tax Expense (Benefit) (41) (51) (99) (74)
Electric, affiliates 120 120 242 242
Total revenues        
Segment Reporting Information [Line Items]        
Net income 184 126 365 322
Regulated Operating Revenue 1,446 [1] 1,327 [2] 3,100 [3] 2,855 [4]
Electric fuel and purchased power 465 464 960 923
Cost of natural gas sold and transported 45 23 261 162
Operating and maintenance expenses 341 328 687 637
Utilities Operating Expense, Depreciation and Amortization 285 270 578 538
Other income, net 79 82 174 187
Interest and Debt Expense 93 85 179 168
Income Tax Expense (Benefit) (42) (51) (98) (81)
Intersegment Eliminations        
Segment Reporting Information [Line Items]        
Regulated Operating Revenue 4   6 1
All Other        
Segment Reporting Information [Line Items]        
Net income 5 5 8 20
Regulated Electric Segment        
Segment Reporting Information [Line Items]        
Revenues Including Intersegment Revenues 1,336   2,630 2,492
Regulated Electric Segment | Total revenues        
Segment Reporting Information [Line Items]        
Net income 186 122 317 267
Regulated Operating Revenue, Electric 1,336 [1] 1,237 [2] 2,630 [3] 2,492 [4]
Electric fuel and purchased power 465 464 960 923
Cost of natural gas sold and transported 0 0 0 0
Operating and maintenance expenses 313 300 634 585
Utilities Operating Expense, Depreciation and Amortization 264 251 535 500
Other income, net 65 74 135 164
Interest and Debt Expense 83 77 163 153
Income Tax Expense (Benefit) (40) (51) (114) (100)
Regulated Electric Segment | Intersegment Eliminations        
Segment Reporting Information [Line Items]        
Regulated Operating Revenue, Electric 0   0 0
Regulated Natural Gas Segment        
Segment Reporting Information [Line Items]        
Revenues Including Intersegment Revenues 114   476 364
Regulated Natural Gas Segment | Total revenues        
Segment Reporting Information [Line Items]        
Net income (2) 4 48 55
Natural gas 110 [1] 90 [2] 470 [3] 363 [4]
Electric fuel and purchased power 0 0 0 0
Cost of natural gas sold and transported 45 23 261 162
Operating and maintenance expenses 28 28 53 52
Utilities Operating Expense, Depreciation and Amortization 21 19 43 38
Other income, net 14 8 39 23
Interest and Debt Expense 10 8 16 15
Income Tax Expense (Benefit) (2) $ 0 16 19
Regulated Natural Gas Segment | Intersegment Eliminations        
Segment Reporting Information [Line Items]        
Natural gas $ 4   $ 6 $ 1
[1] Regulated electric results include $120 million of affiliate revenues. Regulated natural gas results include an immaterial amount of affiliate revenues.
[2] Regulated electric results include $120 million of affiliate revenues. Regulated natural gas results include an immaterial amount of affiliate revenues.
[3] Regulated electric results include $242 million of affiliate revenues. Regulated natural gas results include an immaterial amount of affiliate revenues.
[4] Regulated electric results include $242 million of affiliate revenues. Regulated natural gas results include an immaterial amount of affiliate revenues.