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Capital Stock (Tables) | 12 Months Ended
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Dec. 31, 2022
Equity [Abstract] |
Schedule Components of Issued, Repurchased and Outstanding Shares | At December 31, 2022, we had 12 billion shares of authorized common stock; issued, repurchased and outstanding shares of common stock consisted of the following:
| Shares Issued |  | Shares Repurchased |  | Shares Outstanding
Balances, December 31, 2019 | 2,805,961,317 |  |  | (947,979,763) |  |  | 1,857,981,554 |
Stock award activity | — |  |  | 437,611 |  |  | 437,611 |
Balances, December 31, 2020 | 2,805,961,317 |  |  | (947,542,152) |  |  | 1,858,419,165 |
Stock award activity | — |  |  | 412,569 |  |  | 412,569 |
Repurchases of common stock | — |  |  | (35,656,116) |  |  | (35,656,116) |
Balances, December 31, 2021 | 2,805,961,317 |  |  | (982,785,699) |  |  | 1,823,175,618 |
Stock award activity | — |  |  | 514,816 |  |  | 514,816 |
Repurchases of common stock | — |  |  | (38,156,312) |  |  | (38,156,312) |
Balances, December 31, 2022 | 2,805,961,317 |  |  | (1,020,427,195) |  |  | 1,785,534,122 |
Share Repurchases | Our total share repurchase activity was as follows for the years ending December 31:
|  | January 2021 Share Repurchase Program
(in millions, except per share data) |  | 2022 |  | 2021 |  |  |  | Total
Total number of shares repurchased | 38.1 |  |  | 35.7 |  |  |  |  | 73.8 |
Aggregate cost of shares repurchased | $ | 1,825 |  |  | $ | 1,675 |  |  |  |  | $ | 3,500 |
Average price per share of shares repurchased | $ | 47.83 |  |  | $ | 46.97 |  |  |  |  | $ | 47.42 |

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