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Share Based Compensation - Share Unit Plans (Details) $ / shares in Units, shares in Thousands, EquityInstruments in Thousands, $ in Millions | 12 Months Ended
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Dec. 31, 2023 EquityInstruments shares | Dec. 31, 2022 CAD ($) EquityInstruments shares $ / shares
Performance Share Units (PSUs) |  |
Share Based Compensation |  |
Vesting period | 3 years |
Summary of activity of share unit plans: |  |
Outstanding, beginning of year | 2,209 | 2,766
Granted | 814 | 947
Redeemed for cash | (436) | (794)
Forfeited/expired | shares | (273) | (710)
Outstanding, end of year | 2,314 | 2,209
Performance Share Units (PSUs) | Minimum |  |
Share Based Compensation |  |
Percentage of share price receivable at the time of vesting | 0.00% |
Performance Share Units (PSUs) | Maximum |  |
Share Based Compensation |  |
Percentage of share price receivable at the time of vesting | 200.00% |
Restricted Stock Units (RSUs) |  |
Share Based Compensation |  |
Vesting period | 3 years |
Value of shares converted to Suncor RSUs | $ |  | $ 123
Conversion price per share | $ / shares |  | $ 30.93
Summary of activity of share unit plans: |  |
Outstanding, beginning of year | 28,262 | 21,437
Granted | 9,006 | 13,235
Redeemed for cash | (7,582) | (4,533)
Forfeited/expired | shares | (3,156) | (1,877)
Outstanding, end of year | 26,530 | 28,262
Deferred Share Units (DSUs) |  |
Summary of activity of share unit plans: |  |
Outstanding, beginning of year | 1,331 | 1,382
Granted | 299 | 187
Redeemed for cash | (461) | (238)
Outstanding, end of year | 1,169 | 1,331
Deferred Share Units (DSUs) | Director | Election Tranche One |  |
Share Based Compensation |  |
Percentage of awards elected to be paid in cash | 50.00% |
Deferred Share Units (DSUs) | Director | Election Tranche Two |  |
Share Based Compensation |  |
Percentage of awards elected to be paid in cash | 100.00% |
Deferred Share Units (DSUs) | Executives | Election Tranche One |  |
Share Based Compensation |  |
Percentage of awards elected to be paid in cash | 25.00% |
Deferred Share Units (DSUs) | Executives | Election Tranche Two |  |
Share Based Compensation |  |
Percentage of awards elected to be paid in cash | 50.00% |
Deferred Share Units (DSUs) | Executives | Election Tranche Three |  |
Share Based Compensation |  |
Percentage of awards elected to be paid in cash | 75.00% |
Deferred Share Units (DSUs) | Executives | Election Tranche Four |  |
Share Based Compensation |  |
Percentage of awards elected to be paid in cash | 100.00% |

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