| 2010年 12月31日 | 2012年 12月31日 | 2013年 12月31日 | 2014年 12月31日 | 2015年 12月31日 | 2016年 12月31日 | 2017年 12月31日 | 2018年 12月31日 | 2019年 12月31日 | 2020年 12月31日 | 2021年 12月31日 | 2022年 12月31日 | 2023年 12月31日 | 2024年 12月31日 | |
| Cash and cash equivalents | 912 | 475 | 904 | 570 | 403 | 349 | 288 | 190 | 108 | 960 | 559 | 370 | 236 | 1,565 |
| Restricted cash | 131 | 46 | 24 | 11 | 27 | 66 | 62 | 35 | 31 | 22 | 19 | 40 | 49 | 21 |
| Accounts receivable – trade, net | 891 | 1,146 | 1,308 | 1,242 | 1,283 | 1,390 | 1,307 | 1,488 | 1,261 | 1,578 | 2,071 | 2,635 | 2,151 | 1,983 |
| Accounts receivable – other, net | - | - | - | - | - | - | - | - | 455 | 403 | 398 | 685 | 561 | 397 |
| Related Party | - | - | - | - | - | - | - | - | - | - | - | - | 31 | 16 |
| Other Receivables, Net, Current | - | - | - | - | - | - | - | - | - | - | - | - | 31 | 13 |
| Income taxes receivable | 248 | 56 | 85 | 45 | 30 | 43 | 110 | 68 | 112 | 113 | 79 | 113 | 94 | 90 |
| Inventories | 258 | 408 | 287 | 396 | 298 | 258 | 307 | 296 | 277 | 308 | 389 | 403 | 482 | 559 |
| Prepaid expenses | - | - | - | - | - | - | - | - | - | - | 260 | 268 | 273 | 255 |
| Regulatory assets | 90 | 62 | 38 | - | - | - | 325 | 138 | 222 | 190 | 271 | 351 | 226 | 60 |
| Derivative Instruments and Hedges, Assets | - | - | - | - | - | - | - | - | - | - | - | - | 122 | 91 |
| Greenhouse gas allowances | - | - | - | - | - | - | 299 | 59 | 72 | 553 | 97 | 141 | 1,189 | 217 |
| Other current assets | 192 | 152 | 170 | 293 | 267 | 271 | 136 | 257 | 324 | 364 | 209 | 49 | 56 | 34 |
| Total current assets | 3,353 | 3,695 | 3,997 | 4,184 | 2,891 | 3,110 | 3,341 | 3,645 | 3,339 | 4,511 | 4,375 | 5,912 | 5,470 | 5,285 |
| Restricted cash | 27 | 22 | 25 | 29 | 20 | 10 | 14 | 21 | 3 | 3 | 3 | 52 | 104 | 3 |
| Regulatory assets | 934 | 1,227 | 2,113 | 3,031 | 3,273 | 3,414 | 1,517 | 1,589 | 1,930 | 1,822 | 2,011 | 2,588 | 3,771 | 3,937 |
| Greenhouse gas allowances | - | - | - | - | - | - | 93 | 289 | 470 | 101 | 422 | 796 | 301 | 845 |
| Nuclear decommissioning trusts | 769 | 908 | 1,034 | 1,131 | 1,063 | 1,026 | 1,033 | 974 | 1,082 | 1,019 | 1,012 | 841 | 872 | 875 |
| Asset, Held-in-Trust, Noncurrent | - | - | - | 512,000,000 | 464,000,000 | 430 | 455 | 416 | 488 | 512 | 567 | 505 | 549 | 585 |
| Deferred income taxes | - | - | - | - | - | - | 170 | 151 | 155 | 136 | 151 | 135 | 129 | 172 |
| Operating Lease, Right-of-Use Asset | - | - | - | - | - | - | - | - | 591 | 543 | 594 | 655 | 723 | 1,177 |
| Equity Method Investments | - | - | - | - | - | - | - | 9,652 | 11,519 | 12,440 | 12,947 | 13,665 | 14,266 | 15,400 |
| Other investments | - | - | - | - | - | - | - | 2,337 | 2,103 | 1,388 | 1,525 | 2,012 | 2,244 | 2,534 |
| Goodwill | - | 1,111 | 1,024 | 931 | 819 | 2,364 | 2,397 | 2,373 | 1,602 | 1,602 | 1,602 | 1,602 | 1,602 | 1,602 |
| Other intangible assets | - | 436 | 426 | 415 | 404 | 548 | 596 | 272 | 213 | 202 | 370 | 344 | 318 | 292 |
| Wildfire fund | - | - | - | - | - | - | - | - | 392 | 363 | 331 | 303 | 269 | 262 |
| Other long-term assets | 600 | 878 | 1,141 | 561 | 761 | 815 | 792 | 974 | 732 | 753 | 1,244 | 1,382 | 1,603 | 1,749 |
| Total other assets | 7,054 | 7,613 | 7,787 | 9,646 | 10,220 | 11,745 | 10,610 | 20,197 | 25,874 | 22,109 | 23,776 | 24,880 | 26,751 | 29,433 |
| Property, plant and equipment | - | - | - | - | - | - | - | - | - | - | - | - | 72,495 | 80,397 |
| Less accumulated depreciation and amortization | - | - | - | - | - | - | - | - | - | - | - | - | 17,535 | 18,960 |
| Property, plant and equipment, net | - | - | - | - | - | - | - | - | - | - | - | - | 54,960 | 61,437 |
| Total assets | 30,283 | 36,499 | 37,244 | 39,732 | 41,150 | 47,786 | 50,454 | 60,638 | 65,665 | 66,623 | 72,045 | 78,574 | 87,181 | 96,155 |
| Short-term debt | 158 | 546 | 545 | 1,733 | 622 | 1,779 | 1,540 | 2,079 | 3,505 | 885 | 3,471 | 3,352 | 2,342 | 2,016 |
| Accounts payable – trade | 755 | 976 | 1,088 | 1,198 | 1,133 | 1,346 | 1,350 | 1,324 | 1,234 | 1,359 | 1,671 | 1,994 | 2,211 | 2,238 |
| Accounts payable – other | 109 | 134 | 127 | 155 | 142 | 130 | 173 | 150 | 179 | 154 | 178 | 275 | 224 | 208 |
| Nonrelated Party | - | - | - | - | - | - | - | - | - | - | - | - | 1,343 | 1,251 |
| Related Party | - | - | - | - | - | - | - | - | - | - | - | - | 235 | 241 |
| Other current liabilities | 765 | 608 | 452 | 649 | 551 | 557 | 545 | 970 | 866 | 1,016 | 1,131 | 1,380 | - | - |
| Dividends and interest payable | 188 | 266 | 271 | 282 | 303 | 319 | 342 | 499 | 515 | 551 | 563 | 621 | 691 | 773 |
| Accrued compensation and benefits | 311 | 337 | 376 | 373 | 423 | 409 | 439 | 469 | 476 | 446 | 479 | 484 | 526 | 558 |
| Regulatory liabilities | - | - | - | - | - | - | 109 | 105 | 319 | 140 | 359 | 504 | 553 | 141 |
| Long-Term Debt and Lease Obligation, Current | 349 | 725 | 1,147 | 469 | 907 | 913 | 1,427 | 1,673 | 1,526 | 1,540 | 106 | 1,019 | 975 | 2,274 |
| Greenhouse gas obligations | - | - | - | - | - | - | 299 | 59 | 72 | 553 | 97 | 141 | 1,189 | 217 |
| Total current liabilities | 3,786 | 4,258 | 4,369 | 5,069 | 4,612 | 5,927 | 6,635 | 7,523 | 9,150 | 6,839 | 10,035 | 9,899 | 10,090 | 9,676 |
| Long-term debt and finance leases | - | - | - | - | - | - | - | - | - | - | - | - | - | 739 |
| Nonrelated Party | - | - | - | - | - | - | - | - | - | - | - | - | 619 | - |
| Related Party | - | - | - | - | - | - | - | - | - | - | - | - | 988 | 352 |
| Other Liabilities, Noncurrent | 823 | 1,084 | 1,169 | 1,104 | 1,176 | - | - | - | - | - | - | - | 307 | 352 |
| Regulatory liabilities | 138 | 1 | - | - | - | - | 3,922 | 4,016 | 3,741 | 3,372 | 3,402 | 3,341 | 3,739 | 3,817 |
| Greenhouse gas obligations | - | - | - | - | - | - | - | 131 | 301 | - | 225 | 565 | - | 506 |
| Liability, Defined Benefit Plan, Noncurrent | 1,105 | 1,456 | 667 | 1,064 | 1,152 | 1,208 | 1,148 | 1,161 | 1,067 | 1,059 | 687 | 410 | 407 | 168 |
| Deferred income taxes | - | - | - | - | - | - | 2,767 | 2,571 | 2,577 | 2,871 | 3,477 | 4,591 | 5,254 | 5,845 |
| Asset retirement obligations | 1,449 | 2,033 | 2,084 | 2,048 | 2,126 | 2,431 | 2,732 | 2,787 | 2,923 | 3,113 | 3,375 | 3,546 | 3,642 | 3,737 |
| Deferred credits and other | - | - | - | - | - | 1,523 | 1,136 | 1,529 | 2,048 | 2,119 | 2,067 | 2,117 | 2,329 | 2,708 |
| Total deferred credits and other liabilities | - | - | - | - | - | 12,189 | 12,234 | 12,256 | 13,925 | 13,069 | 13,523 | 14,871 | 15,678 | 17,133 |
| Preferred stock | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Common stock | 2,036 | 2,217 | 2,409 | 2,484 | 2,621 | 2,982 | 3,149 | 5,540 | 7,480 | 7,053 | 11,862 | 12,160 | 12,204 | 13,520 |
| Retained earnings | 7,329 | 8,441 | 8,827 | 9,339 | 9,994 | 10,717 | 10,147 | 10,104 | 11,130 | 13,673 | 13,548 | 14,201 | 15,732 | 16,979 |
| Accumulated other comprehensive income (loss) | -330 | -376 | -228 | -497 | -806 | -748 | -626 | -764 | -939 | -500 | -318 | -135 | -150 | -166 |
| Total shareholders’ equity | 9,238 | 10,683 | 11,850 | 12,100 | 12,579 | 15,241 | 15,140 | 19,248 | 21,805 | 24,934 | 27,419 | 29,256 | 33,654 | 37,788 |
| Preferred stock of subsidiary | - | - | - | - | - | - | - | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Other noncontrolling interests | - | - | - | - | - | - | - | 2,090 | 1,856 | 1,541 | 1,418 | 2,121 | 4,959 | 6,546 |
| Total equity | 9,238 | 10,683 | 11,850 | 12,100 | 12,579 | 15,241 | 15,140 | 19,248 | 21,805 | 24,934 | 27,419 | 29,256 | 33,654 | 37,788 |
| Total liabilities and shareholders’ equity | 30,283 | 36,499 | 37,244 | 39,732 | 41,150 | 47,786 | 50,454 | 60,638 | 65,665 | 66,623 | 72,045 | 78,574 | 87,181 | 96,155 |