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v3.19.1

Contract costs (Tables) | 12 Months Ended
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Dec. 31, 2018
Revenue From Contract With Customer1 [Abstract] |
Contract costs | The table below provides a reconciliation of the contract costs balance.
FOR THE YEAR ENDED DECEMBER 31 | 2018 |  | 2017 |
Opening balance, January 1 | 636 |  | 618 |
Incremental costs of obtaining a contract and contract fulfillment costs | 567 |  | 526 |
Amortization included in operating costs | (477 | ) | (508 | )
Impairment charges included in operating costs | (19 | ) | — |
Ending balance, December 31 | 707 |  | 636 |

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- Definition Revenue From Contract With Customer1 [Abstract] + References No definition available. + Details
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- Definition The disclosure of assets recognised from the costs to obtain or fulfil contracts with customers. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2018-01-01 -Paragraph 128 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=15&date=2018-03-01&anchor=para_128_a&doctype=Standard -URIDate 2018-03-16 + Details
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