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CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Operating revenues |  |  |  |  |
Electric |  | $ 3,393 | $ 3,387 | $ 8,737 | $ 8,751
Natural gas |  | 239 | 245 | 1,535 | 1,926
Other |  | 12 | 30 | 49 | 87
Total operating revenues |  | 3,644 | 3,662 | 10,321 | 10,764
Operating expenses |  |  |  |  |
Electric fuel and purchased power |  | 1,060 | 1,181 | 2,863 | 3,328
Cost of natural gas sold and transported |  | 63 | 70 | 664 | 1,084
Cost of sales — other |  | 3 | 14 | 12 | 37
Operating and maintenance expenses |  | 655 | 586 | 1,922 | 1,864
Conservation and demand side management expenses |  | 112 | 76 | 295 | 215
Depreciation and amortization |  | 681 | 618 | 2,042 | 1,807
Taxes, Other |  | 159 | 168 | 484 | 489
Loss on Comanche Unit 3 litigation |  | 0 | 34 | 0 | 34
Total operating expenses |  | 2,733 | 2,747 | 8,282 | 8,858
Operating income |  | 911 | 915 | 2,039 | 1,906
Other income, net |  | 39 | 3 | 75 | 19
Earnings from equity method investments |  | 3 | 7 | 19 | 27
Allowance for funds used during construction — equity |  | 44 | 26 | 119 | 63
Interest charges and financing costs |  |  |  |  |
Interest charges — includes other financing costs |  | 326 | 269 | 936 | 790
Allowance for funds used during construction — debt |  | (21) | (14) | (51) | (36)
Total interest charges and financing costs |  | 305 | 255 | 885 | 754
Income before income taxes |  | 692 | 696 | 1,367 | 1,261
Income tax expense (benefit) |  | 10 | 40 | (105) | (101)
Net income |  | $ 682 | $ 656 | $ 1,472 | $ 1,362
Weighted average common shares outstanding: |  |  |  |  |
Basic (in shares) |  | 564 | 552 | 559 | 551
Diluted (in shares) | [1] | 565 | 552 | 559 | 552
Earnings per average common share: |  |  |  |  |
Basic (in dollars per share) |  | $ 1.21 | $ 1.19 | $ 2.63 | $ 2.47
Diluted (in dollars per share) |  | $ 1.21 | $ 1.19 | $ 2.63 | $ 2.47
[1] | Diluted common shares outstanding included common stock equivalents of 0.4 million and 0.3 million for the three months ended Sept. 30, 2024 and 2023, respectively. Diluted common shares outstanding included common stock equivalents of 0.3 million and 0.2 million for the nine months ended Sept. 30, 2024 and 2023.

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