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EXPLORATION AND EVALUATION ASSETS | 12 Months Ended
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Dec. 31, 2019
EXPLORATION AND EVALUATION ASSETS |
EXPLORATION AND EVALUATION ASSETS | 17. EXPLORATION AND EVALUATION ASSETS
($ millions) |  | December 31 2019 |  | December 31 2018 |  |
Beginning of year |  | 2 319 |  | 2 052 |  |
Acquisitions and additions (Note 32) |  | 193 |  | 316 |  |
Transfers to oil and gas assets |  | — |  | (31 | ) |
Dry hole expenses |  | (66 | ) | (11 | ) |
Disposals |  | (16 | ) | (16 | ) |
Amortization |  | — |  | (1 | ) |
Foreign exchange adjustments |  | (2 | ) | 10 |  |
End of year |  | 2 428 |  | 2 319 |  |

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