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Equity (Tables) | 12 Months Ended
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Dec. 31, 2022
Equity [Abstract] |
Changes in Shares of Common Stock | Common Stock The changes in our shares of common stock, as categorized in the equity section of the balance sheet, were:
| Shares
| 2022 | 2021 | 2020
Issued |  |  |
Beginning of year | 2,091,562,747 |  | 1,798,844,267 |  | 1,795,652,203 |
Acquisition of Concho | — |  | 285,928,872 |  | — |
Distributed under benefit plans | 9,322,387 |  | 6,789,608 |  | 3,192,064 |
End of year | 2,100,885,134 |  | 2,091,562,747 |  | 1,798,844,267 |
Held in Treasury |  |  |
Beginning of year | 789,319,875 |  | 730,802,089 |  | 710,783,814 |
Repurchase of common stock | 87,709,187 |  | 58,517,786 |  | 20,018,275 |
End of year | 877,029,062 |  | 789,319,875 |  | 730,802,089 |

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- Definition Tabular disclosure of the change in common stock outstanding. + References No definition available. + Details
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