Equity (Tables) |
12 Months Ended |
|---|---|
Dec. 31, 2021 | |
| Equity [Abstract] | |
| Changes in Shares of Common Stock | Common Stock The changes in our shares of common stock, Shares 2021 2020 2019 Issued Beginning of year 1,798,844,267 1,795,652,203 1,791,637,434 Acquisition of Concho 285,928,872 - - Distributed under benefit plans 6,789,608 3,192,064 4,014,769 End of year 2,091,562,747 1,798,844,267 1,795,652,203 Held in Treasury Beginning of year 730,802,089 710,783,814 653,288,213 Repurchase of common stock 58,517,786 20,018,275 57,495,601 End of year 789,319,875 730,802,089 710,783,814 |