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Finance costs (Tables) | 12 Months Ended
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Dec. 31, 2020
Text block [abstract] |
Summary of Financial Income and Expenses |
|  | 2020 $m |  |  | 2019 $m |  |  | 2018 $m |
Financial income |  |  |  |  |  |  |  |  |  |  |  |
Financial income on deposits and money market funds |  |  | 2 |  |  |  | 3 |  |  |  | 2 |
Interest income on loans and other assets |  |  | 2 |  |  |  | 3 |  |  |  | 3 |
|  |  | 4 |  |  |  | 6 |  |  |  | 5 |
Financial expenses |  |  |  |  |  |  |  |  |  |  |  |
Interest expense on external borrowings |  |  | 102 |  |  |  | 78 |  |  |  | 61 |
Interest expense on lease liabilities |  |  | 37 |  |  |  | 41 |  |  |  | 39 |
Capitalised interest |  |  | (1 | ) |  |  | (5 | ) |  |  | (5 | )
Unwind of discount on deferred purchase consideration |  |  | 1 |  |  |  | 1 |  |  |  | 1 |
Other charges a |  |  | 5 |  |  |  | 6 |  |  |  | 5 |
|  |  | 144 |  |  |  | 121 |  |  |  | 101 |
Analysed as: |  |  |  |  |  |  |  |  |  |  |  |
Financial expenses before exceptional items |  |  | 130 |  |  |  | 121 |  |  |  | 101 |
Exceptional financial expenses (note 6) |  |  | 14 |  |  |  | — |  |  |  | — |
|  |  | 144 |  |  |  | 121 |  |  |  | 101 |
a | Other charges includes bank charges and non-bank interest expense.

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- Definition The disclosure of finance income (cost). [Refer: Finance income (cost)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_10_e&doctype=Standard -URIDate 2020-01-01 + Details
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