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EXPLORATION AND EVALUATION ASSETS | 12 Months Ended
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Dec. 31, 2017
Exploration For And Evaluation Of Mineral Resources [Abstract] |
EXPLORATION AND EVALUATION ASSETS | EXPLORATION AND EVALUATION ASSETS
| Exploration and Production | Oil Sands Mining and Upgrading |  | Total |
| North America |  | North Sea |  | Offshore Africa |  |  |
Cost |  |  |  |  |
At December 31, 2015 | $ | 2,500 |  | $ | — |  | $ | 86 |  | $ | — |  | $ | 2,586 |
Additions | 20 |  | — |  | 9 |  | — |  | 29 |
Transfers to property, plant and equipment | (211 | ) | — |  | — |  | — |  | (211 | )
Disposals/derecognitions | (3 | ) | — |  | (18 | ) | — |  | (21 | )
Foreign exchange adjustments | — |  | — |  | (1 | ) | — |  | (1 | )
At December 31, 2016 | 2,306 |  | — |  | 76 |  | — |  | 2,382 |
Additions | 144 |  | — |  | 15 |  | — |  | 159 |
Acquisition of AOSP and other assets (note 7) | 31 |  | — |  | — |  | 259 |  | 290 |
Transfers to property, plant and equipment | (198 | ) | — |  | — |  | — |  | (198 | )
Disposals/derecognitions | (1 | ) | — |  | — |  | — |  | (1 | )
At December 31, 2017 | $ | 2,282 |  | $ | — |  | $ | 91 |  | $ | 259 |  | $ | 2,632 |
On May 31, 2017, the Company completed the acquisition of AOSP and other assets in the Oil Sands Mining and Upgrading and North America Exploration and Production segments, including exploration and evaluation assets of $290 million. Refer to note 7 regarding the acquisition of AOSP and other assets. During 2017, the Company disposed of a number of North America exploration and evaluation assets with a net book value $1 million for consideration of $36 million, resulting in a pre-tax gain on sale of properties of $35 million. During 2016, the Company disposed of a number of North America exploration and evaluation assets totaling $3 million for consideration of $35 million, resulting in a pre-tax gain on sale of properties of $32 million. In addition, in connection with the Company's notice of withdrawal from Block CI-12 in Côte d'Ivoire, Offshore Africa, the Company derecognized $18 million of exploration and evaluation assets.

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- Definition Exploration For And Evaluation Of Mineral Resources [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for exploration and evaluation assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 6 -IssueDate 2017-01-01 -Section Disclosure -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=6&date=2017-03-01&anchor=sect_Disclosure&doctype=Standard -URIDate 2017-03-09 + Details
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