15.
Deferred tax assets
| As at Dec 31 2014 | As at Dec 31 2013 | |
|---|---|---|
| Obligations under length-of-service awards and severance | 120 | 98 |
| Provision for well decommissioning costs | 141 | 121 |
| Other provisions | 157 | 131 |
| Impairment losses on property, plant and equipment | 145 | 105 |
| Other impairment losses/write-offs | 33 | 12 |
| Negative valuation of derivative financial instruments | 136 | 38 |
| Connection charge | 57 | 60 |
| Investment tax credit (Norway) | 305 | 317 |
| Tax loss | 602 | 1,247 |
| Other deferred tax assets | 87 | 104 |
| Total | 1,783 | 2,233 |