The total unrecognised deferred tax position is as follows:
| Gross | Unrecognised deferred tax | |||||||||||||||
| 2017 $m |
2016 $m |
2017 $m |
2016 $m |
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Revenue losses |
452 | 518 | 76 | 94 | ||||||||||||
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Capital losses |
515 | 475 | 99 | 83 | ||||||||||||
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Total losses |
967 | 993 | 175 | 177 | ||||||||||||
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Othera |
35 | 27 | 9 | 5 | ||||||||||||
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Total |
1,002 | 1,020 | 184 | 182 | ||||||||||||
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| a | Primarily relates to provisions, accruals and amortisation. |