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Exploration and Evaluation Assets | 12 Months Ended
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Dec. 31, 2022
Exploration and Evaluation Assets |
Exploration and Evaluation Assets | 18. Exploration and Evaluation Assets ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31 |  | December 31 | ​
($ millions) |  | 2022 |  | 2021 |
Beginning of year |  | 2 226 |  | 2 286 | ​
Acquisitions and additions |  | 41 |  | 2 | ​
Transfers to oil and gas assets |  | (34) |  | - | ​
Disposals and derecognition |  | - |  | (54) | ​
Reclassified to assets held for sale (note 33) |  | (239) |  | - | ​
Foreign exchange adjustments |  | 1 |  | (8) | ​
End of year |  | 1 995 |  | 2 226 | ​
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