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v3.25.2

Reportable Segments - Schedule of Financial Data (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues from external customers | $ 1,944 | $ 1,905 | $ 4,864 | $ 4,525 |
Intersegment revenues | 0 |  | 0 |  |
Utility natural gas, fuel and purchased power | 300 | 233 | 1,306 | 1,020 |
Non-utility cost of revenues, including natural gas | 2 |  | 3 | 1 |
Operation and maintenance | 715 | 678 | 1,462 | 1,387 |
Depreciation and amortization | 370 | 386 | 733 | 749 |
Taxes other than income taxes | 140 | 141 | 294 | 285 |
Interest expense | 195 | 217 | 433 | 421 |
Income tax expense (benefit) | 55 | 33 | 136 | 111 |
Interest income | 0 | 0 | 0 | 0 |
Other expense (income), net | (31) | (11) | 2 | (27) |
Net income (loss) | 198 | 228 | 495 | 578 |
Interest income from securitization bonds (less than for 2025) | 1 | 1 | 1 | 2 |
Expenditures for Long-lived Assets |  |  | 2,430 | 1,670 |
Total Assets | 44,099 |  | 44,099 |  | $ 43,768
Natural Gas |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues from external customers | 750 | 695 | 2,602 | 2,265 |
Corporate and Other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues from external customers | 3 | 3 | 5 | 4 |
Corporate and Other | Pension and Other Postretirement Plans Costs |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Regulatory assets | 372 |  | 372 |  | 384
Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues from external customers | 1,944 | 1,905 | 4,864 | 4,525 |
Intersegment revenues | 1 |  | 2 |  |
Utility natural gas, fuel and purchased power | 301 | 233 | 1,308 | 1,020 |
Non-utility cost of revenues, including natural gas | 2 |  | 3 | 1 |
Operation and maintenance | 715 | 678 | 1,462 | 1,387 |
Depreciation and amortization | 370 | 386 | 733 | 749 |
Taxes other than income taxes | 140 | 141 | 294 | 285 |
Interest expense | 209 | 227 | 454 | 438 |
Income tax expense (benefit) | 55 | 33 | 136 | 111 |
Interest income | (14) | (10) | (21) | (17) |
Other expense (income), net | (31) | (11) | 2 | (27) |
Net income (loss) | 198 | 228 | 495 | 578 |
Operating Segments | Electric |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues from external customers | 1,191 | 1,207 | 2,257 | 2,256 |
Intersegment revenues | 0 |  | 0 |  |
Utility natural gas, fuel and purchased power | 65 | 50 | 139 | 93 |
Non-utility cost of revenues, including natural gas | 0 |  | 0 | 0 |
Operation and maintenance | 523 | 497 | 1,007 | 972 |
Depreciation and amortization | 230 | 237 | 440 | 463 |
Taxes other than income taxes | 80 | 77 | 158 | 155 |
Interest expense | 106 | 97 | 207 | 188 |
Income tax expense (benefit) | 41 | 47 | 66 | 78 |
Interest income | (7) | (6) | (11) | (11) |
Other expense (income), net | (18) | (7) | (28) | (18) |
Net income (loss) | 171 | 215 | 279 | 336 |
Expenditures for Long-lived Assets |  |  | 1,716 | 951 |
Total Assets | 25,231 |  | 25,231 |  | 23,936
Operating Segments | Natural Gas |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues from external customers | 750 | 695 | 2,602 | 2,265 |
Intersegment revenues | 1 |  | 2 |  |
Utility natural gas, fuel and purchased power | 236 | 183 | 1,169 | 927 |
Non-utility cost of revenues, including natural gas | 2 |  | 3 | 1 |
Operation and maintenance | 195 | 189 | 460 | 423 |
Depreciation and amortization | 137 | 142 | 284 | 274 |
Taxes other than income taxes | 56 | 61 | 130 | 126 |
Interest expense | 43 | 61 | 102 | 112 |
Income tax expense (benefit) | 11 | 16 | 116 | 79 |
Interest income | (10) | (1) | (10) | (1) |
Other expense (income), net | (5) | (3) | 36 | (6) |
Net income (loss) | 86 | 47 | 314 | 330 |
Expenditures for Long-lived Assets |  |  | 696 | 712 |
Total Assets | 17,090 |  | 17,090 |  | 18,583
Operating Segments | Corporate and Other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues from external customers | 3 | 3 | 5 | 4 |
Intersegment revenues | 0 |  | 0 |  |
Utility natural gas, fuel and purchased power | 0 | 0 | 0 | 0 |
Non-utility cost of revenues, including natural gas | 0 |  | 0 | 0 |
Operation and maintenance | (3) | (8) | (5) | (8) |
Depreciation and amortization | 3 | 7 | 9 | 12 |
Taxes other than income taxes | 4 | 3 | 6 | 4 |
Interest expense | 60 | 69 | 145 | 138 |
Income tax expense (benefit) | 3 | (30) | (46) | (46) |
Interest income | 3 | (3) | 0 | (5) |
Other expense (income), net | (8) | (1) | (6) | (3) |
Net income (loss) | (59) | (34) | (98) | (88) |
Expenditures for Long-lived Assets |  |  | 18 | 7 |
Total Assets | 1,778 |  | 1,778 |  | $ 1,249
Eliminations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues from external customers | 0 | 0 | 0 | 0 |
Intersegment revenues | (1) |  | (2) |  |
Utility natural gas, fuel and purchased power | (1) | 0 | (2) | 0 |
Non-utility cost of revenues, including natural gas | 0 |  | 0 | 0 |
Operation and maintenance | 0 | 0 | 0 | 0 |
Depreciation and amortization | 0 | 0 | 0 | 0 |
Taxes other than income taxes | 0 | 0 | 0 | 0 |
Interest expense | (14) | (10) | (21) | (17) |
Income tax expense (benefit) | 0 | 0 | 0 | 0 |
Interest income | (14) | (10) | (21) | (17) |
Other expense (income), net | 0 | 0 | 0 | 0 |
Net income (loss) | $ 0 | $ 0 | $ 0 | $ 0 |

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