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Provisions (Tables) | 12 Months Ended
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Dec. 31, 2017
Other Provisions, Contingent Liabilities And Contingent Assets [Abstract] |
Disclosure of Changes in Provisions | The following chart details the changes in our provisions for the year indicated:
| Restructuring |  | Warranty |  | Legal (i) |  | Other(ii) |  | Total
Balance — December 31, 2016 | $ | 6.6 |  |  | $ | 19.6 |  |  | $ | 3.0 |  |  | $ | 5.5 |  |  | $ | 34.7 |
Provisions | 25.4 |  |  | 12.6 |  |  | 0.8 |  |  | 1.3 |  |  | 40.1 |
Reversal of prior year provisions(iii) | (0.3 | ) |  | (4.6 | ) |  | (0.2 | ) |  | — |  |  | (5.1 | )
Payments/usage | (19.0 | ) |  | (6.5 | ) |  | (1.1 | ) |  | — |  |  | (26.6 | )
Accretion, foreign exchange and other | — |  |  | 0.3 |  |  | — |  |  | — |  |  | 0.3 |
Balance — December 31, 2017 | $ | 12.7 |  |  | $ | 21.4 |  |  | $ | 2.5 |  |  | $ | 6.8 |  |  | $ | 43.4 |
Current | $ | 12.7 |  |  | $ | 11.4 |  |  | $ | 2.5 |  |  | $ | — |  |  | $ | 26.6 |
Non-current(iv) | — |  |  | 10.0 |  |  | — |  |  | 6.8 |  |  | 16.8 |
December 31, 2017 | $ | 12.7 |  |  | $ | 21.4 |  |  | $ | 2.5 |  |  | $ | 6.8 |  |  | $ | 43.4 |
(i) | Legal represents our provisions recorded for various legal actions based on our estimates of the likely outcomes.
(ii) | Other represents our asset retirement obligations of $6.8, relating to sites that we currently lease.
(iii) | During 2017, we reversed prior year warranty provisions as a result of expired warranties and changes in estimated costs based on historical experience.
(iv) | Non-current balances are included in provisions and other non-current liabilities on our consolidated balance sheet.

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- Definition The disclosure of other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2017-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2017-03-01&anchor=para_84&doctype=Standard -URIDate 2017-03-09 + Details
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