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Consolidated Statements of Stockholders' Equity - Southern - USD ($) $ in Millions | Total | Common Stock | Treasury | Paid-In Capital | Retained Earnings | Accumulated Other Comprehensive Income (Loss) | Noncontrolling Interests
--- | --- | --- | --- | --- | --- | --- | ---
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Beginning balance (in shares) |  |  | (1,000,000) |  |  |  |
Beginning balance (in shares) at Dec. 31, 2020 |  | 1,058,000,000 |  |  |  |  |
Beginning balance at Dec. 31, 2020 | $ 32,234 | $ 5,268 | $ (46) | $ 11,834 | $ 11,311 | $ (395) | $ 4,262
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Consolidated net income (loss) | 2,294 |  |  |  | 2,393 |  | (99)
Other comprehensive income (loss) | 158 |  |  |  |  | 158 |
Stock issued (in shares) |  | 3,000,000 |  |  |  |  |
Stock issued | 73 | $ 11 |  | 62 |  |  |
Stock-based compensation | 62 |  |  | 62 |  |  |
Cash dividends on common stock | (2,777) |  |  |  | (2,777) |  |
Capital contributions from noncontrolling interests | 590 |  |  |  |  |  | 590
Distributions to noncontrolling interests | (351) |  |  |  |  |  | (351)
Other | (7) |  | (1) | (8) | 2 |  |
Ending balance (in shares) at Dec. 31, 2021 |  | 1,061,000,000 |  |  |  |  |
Ending balance at Dec. 31, 2021 | 32,276 | $ 5,279 | $ (47) | 11,950 | 10,929 | (237) | 4,402
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Beginning balance (in shares) |  |  | (1,000,000) |  |  |  |
Consolidated net income (loss) | 3,417 |  |  |  | 3,524 |  | (107)
Other comprehensive income (loss) | 71 |  |  |  |  | 71 |
Stock issued (in shares) |  | 29,000,000 |  |  |  |  |
Stock issued | 1,808 | $ 138 |  | 1,670 |  |  |
Stock-based compensation | 44 |  |  | 44 |  |  |
Cash dividends on common stock | (2,907) |  |  |  | (2,907) |  |
Capital contributions from noncontrolling interests | 88 |  |  |  |  |  | 88
Distributions to noncontrolling interests | (259) |  |  |  |  |  | (259)
Other | (6) |  | $ (6) | 9 | (8) | (1) |
Ending balance (in shares) at Dec. 31, 2022 |  | 1,090,000,000 |  |  |  |  |
Ending balance at Dec. 31, 2022 | $ 34,532 | $ 5,417 | $ (53) | 13,673 | 11,538 | (167) | 4,124
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Beginning balance (in shares) | (1,000,000.0) |  | (1,000,000) |  |  |  |
Consolidated net income (loss) | $ 3,849 |  |  |  | 3,976 |  | (127)
Other comprehensive income (loss) | (10) |  |  |  |  | (10) |
Stock issued (in shares) |  | 2,000,000 |  |  |  |  |
Stock issued | 36 | $ 6 |  | 30 |  |  |
Stock-based compensation | 73 |  |  | 73 |  |  |
Cash dividends on common stock | (3,035) |  |  |  | (3,035) |  |
Capital contributions from noncontrolling interests | 21 |  |  |  |  |  | 21
Distributions to noncontrolling interests | (236) |  |  |  |  |  | (236)
Other | (5) |  | $ (6) | (1) | 3 |  | (1)
Ending balance (in shares) at Dec. 31, 2023 |  | 1,092,000,000 |  |  |  |  |
Ending balance at Dec. 31, 2023 | $ 35,225 | $ 5,423 | $ (59) | $ 13,775 | $ 12,482 | $ (177) | $ 3,781
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Beginning balance (in shares) | (1,000,000.0) |  | (1,000,000) |  |  |  |

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