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CONSOLIDATED STATEMENTS OF STOCKHOLDER'S EQUITY (UNAUDITED) - USD ($) $ in Millions | Total | COMMON STOCK | RETAINED EARNINGS
--- | --- | --- | ---
Balance at beginning of period at Dec. 31, 2021 |  | $ 10,050 | $ 1,585
Increase (Decrease) in Stockholder's Equity |  |  |
Net income |  |  | 528
Balance at end of period at Mar. 31, 2022 | $ 12,163 | 10,050 | 2,113
Balance at beginning of period at Dec. 31, 2022 | 13,554 | 10,050 | 3,504
Increase (Decrease) in Stockholder's Equity |  |  |
Net income |  |  | 454
Balance at end of period at Mar. 31, 2023 | $ 14,008 | $ 10,050 | $ 3,958

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