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Condensed Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Revenues |  |  |  |
Revenues | $ 897,360 | $ 895,685 | $ 1,794,518 | $ 1,823,922
Expenses |  |  |  |
Total expenses | 2,616,335 | 802,706 | 3,437,074 | 1,637,425
Operating income (loss) |  |  |  |
Total operating income (loss) | (1,718,975) | 92,979 | (1,642,556) | 186,497
Retirement defined benefits credit—other than service costs | 1,281 | 1,153 | 2,563 | 2,305
Interest expense, net—other than on deposit liabilities and other bank borrowings | (32,400) | (29,832) | (63,991) | (58,630)
Allowance for borrowed funds used during construction | 1,344 | 1,295 | 2,730 | 2,426
Allowance for equity funds used during construction | 3,336 | 3,772 | 6,976 | 7,073
Interest income | 3,134 | 0 | 6,267 | 0
Loss before income taxes | (1,742,280) | 69,367 | (1,688,011) | 139,671
Income tax expense (benefit) | (447,269) | 14,284 | (435,595) | 29,394
Net income (loss) | (1,295,011) | 55,083 | (1,252,416) | 110,277
Preferred stock dividends of subsidiaries | 473 | 473 | 946 | 946
Net income (loss) for common stock | $ (1,295,484) | $ 54,610 | $ (1,253,362) | $ 109,331
Basic earnings (loss) per common share (in dollars per share) | $ (11.74) | $ 0.50 | $ (11.37) | $ 1.00
Diluted earnings (loss) per common share (in dollars per share) | $ (11.74) | $ 0.50 | $ (11.37) | $ 1.00
Weighted-average number of common shares outstanding: |  |  |  |
Basic (in shares) | 110,303 | 109,573 | 110,260 | 109,544
Diluted (in shares) | 110,303 | 109,780 | 110,260 | 109,870
Electric utility |  |  |  |
Revenues |  |  |  |
Revenues | $ 792,331 | $ 794,191 | $ 1,580,909 | $ 1,624,552
Expenses |  |  |  |
Total expenses | 2,436,771 | 720,566 | 3,161,994 | 1,475,052
Operating income (loss) |  |  |  |
Total operating income (loss) | (1,644,440) | 73,625 | (1,581,085) | 149,500
Loss before income taxes | (1,658,653) | 58,868 | (1,607,753) | 119,976
Income tax expense (benefit) | (429,758) | 13,070 | (418,578) | 26,670
Net income (loss) | (1,228,895) | 45,798 | (1,189,175) | 93,306
Preferred stock dividends of subsidiaries | 499 | 499 | 998 | 998
Net income (loss) for common stock | (1,229,394) | 45,299 | (1,190,173) | 92,308
Bank |  |  |  |
Revenues |  |  |  |
Revenues | 101,943 | 96,885 | 207,087 | 190,742
Expenses |  |  |  |
Total expenses | 159,329 | 72,017 | 238,941 | 142,354
Operating income (loss) |  |  |  |
Total operating income (loss) | (57,386) | 24,868 | (31,854) | 48,388
Loss before income taxes | (57,106) | 25,055 | (31,293) | 48,762
Income tax expense (benefit) | (11,319) | 4,851 | (6,440) | 9,996
Net income (loss) | (45,787) | 20,204 | (24,853) | 38,766
Preferred stock dividends of subsidiaries | 0 | 0 | 0 | 0
Net income (loss) for common stock | (45,787) | 20,204 | (24,853) | 38,766
Other |  |  |  |
Revenues |  |  |  |
Revenues | 3,086 | 4,609 | 6,522 | 8,628
Expenses |  |  |  |
Total expenses | 20,235 | 10,123 | 36,139 | 20,019
Operating income (loss) |  |  |  |
Total operating income (loss) | (17,149) | (5,514) | (29,617) | (11,391)
Loss before income taxes | (26,521) | (14,556) | (48,965) | (29,067)
Income tax expense (benefit) | (6,192) | (3,637) | (10,577) | (7,272)
Net income (loss) | (20,329) | (10,919) | (38,388) | (21,795)
Preferred stock dividends of subsidiaries | (26) | (26) | (52) | (52)
Net income (loss) for common stock | $ (20,303) | $ (10,893) | $ (38,336) | $ (21,743)

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