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v3.25.3

Segment Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Segment Reporting [Abstract] |  |  |  |  |
Equity Method Investments | $ 239 |  | $ 239 |  | $ 246
Segment Reporting Information [Line Items] |  |  |  |  |
Electric | 3,638 | $ 3,393 | 9,351 | $ 8,737 |
Natural gas | 264 | 239 | 1,715 | 1,535 |
Revenues Including Intersegment Revenues | 3,910 |  | 11,085 | 10,274 |
Electric fuel and purchased power | 1,098 | 1,060 | 3,036 | 2,863 |
Cost of natural gas sold and transported | 61 | 63 | 708 | 664 |
Operating and maintenance expenses | 692 | 655 | 2,053 | 1,922 |
Utilities Operating Expense, Depreciation and Amortization | 750 | 681 | 2,200 | 2,042 |
Other income, net | 46 | 39 | 121 | 75 |
Interest and Debt Expense | 348 | 305 | 979 | 885 |
Income tax (benefit) expense | 8 | 10 | (113) | (105) |
Net income | 524 | 682 | 1,451 | 1,472 |
Equity Method Investments | 239 |  | 239 |  | 246
Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Regulated Operating Revenue | 3,902 | 3,632 | 11,066 | 10,272 |
Electric fuel and purchased power | 1,098 | 1,060 | 3,036 | 2,863 |
Cost of natural gas sold and transported | 61 | 63 | 708 | 664 |
Operating and maintenance expenses | 687 | 640 | 2,020 | 1,902 |
Utilities Operating Expense, Depreciation and Amortization | 746 | 678 | 2,189 | 2,032 |
Other income, net | 471 | 211 | 882 | 614 |
Interest and Debt Expense | 259 | 227 | 737 | 668 |
Income tax (benefit) expense | 35 | 37 | (51) | (57) |
Net income | 553 | 716 | 1,564 | 1,588 |
Intersegment Eliminations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Regulated Operating Revenue | 8 |  | 19 | 2 |
All Other |  |  |  |  |
Segment Reporting [Abstract] |  |  |  |  |
Equity Method Investments | 149 |  | 149 |  | 161
Segment Reporting Information [Line Items] |  |  |  |  |
Net income | (29) | (34) | (113) | (116) |
Equity Method Investments | 149 |  | 149 |  | 161
Regulated Electric Segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues Including Intersegment Revenues | 3,638 |  | 9,351 | 8,738 |
Regulated Electric Segment | Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Electric | 3,638 | 3,393 | 9,351 | 8,737 |
Electric fuel and purchased power | 1,098 | 1,060 | 3,036 | 2,863 |
Cost of natural gas sold and transported | 0 | 0 | 0 | 0 |
Operating and maintenance expenses | 582 | 540 | 1,704 | 1,596 |
Utilities Operating Expense, Depreciation and Amortization | 640 | 591 | 1,883 | 1,772 |
Other income, net | 443 | 197 | 770 | 547 |
Interest and Debt Expense | 228 | 198 | 645 | 582 |
Income tax (benefit) expense | 55 | 55 | (88) | (85) |
Net income | 592 | 752 | 1,401 | 1,463 |
Regulated Electric Segment | Intersegment Eliminations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Electric | 0 |  | 0 | 1 |
Regulated Natural Gas Segment |  |  |  |  |
Segment Reporting [Abstract] |  |  |  |  |
Equity Method Investments | 90 |  | 90 |  | 85
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues Including Intersegment Revenues | 272 |  | 1,734 | 1,536 |
Equity Method Investments | 90 |  | 90 |  | $ 85
Regulated Natural Gas Segment | Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Natural gas | 264 | 239 | 1,715 | 1,535 |
Electric fuel and purchased power | 0 | 0 | 0 | 0 |
Cost of natural gas sold and transported | 61 | 63 | 708 | 664 |
Operating and maintenance expenses | 105 | 100 | 316 | 306 |
Utilities Operating Expense, Depreciation and Amortization | 106 | 87 | 306 | 260 |
Other income, net | 28 | 14 | 112 | 67 |
Interest and Debt Expense | 31 | 29 | 92 | 86 |
Income tax (benefit) expense | (20) | (18) | 37 | 28 |
Net income | (39) | $ (36) | 163 | 125 |
Regulated Natural Gas Segment | Intersegment Eliminations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Natural gas | $ 8 |  | $ 19 | $ 1 |

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- Definition Amount of operating expense for depreciation and amortization of regulated operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(2)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
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