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Performance B.4.1. Share-based compensation - Assumptions (Details) | 12 Months Ended
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Dec. 31, 2018 USD ($) year
Performance share plan 2018 (Relative TSR) |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Risk-free rate % | (0.39%)
Dividend yield % | 3.21%
Share price volatility % | 30.27%
Award term (years) | year | 2.93
Share fair value (in US$) | $ | $ 57.70
Performance share plan 2017 (Relative TSR) |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Risk-free rate % | (0.40%)
Dividend yield % | 3.80%
Share price volatility % | 22.50%
Award term (years) | year | 2.92
Share fair value (in US$) | $ | $ 27.06
Performance share plan 2017 (Absolute TSR) |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Risk-free rate % | (0.40%)
Dividend yield % | 3.80%
Share price volatility % | 22.50%
Award term (years) | year | 2.92
Share fair value (in US$) | $ | $ 29.16
Performance share plan 2016 (Relative TSR) |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Risk-free rate % | (0.65%)
Dividend yield % | 3.49%
Share price volatility % | 30.00%
Award term (years) | year | 2.61
Share fair value (in US$) | $ | $ 43.35
Performance share plan 2016 (Absolute TSR) |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Risk-free rate % | (0.65%)
Dividend yield % | 3.49%
Share price volatility % | 30.00%
Award term (years) | year | 2.61
Share fair value (in US$) | $ | $ 45.94
Performance share plan 2015 (Absolute TSR) |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Risk-free rate % | (0.32%)
Dividend yield % | 2.78%
Share price volatility % | 23.00%
Award term (years) | year | 2.57
Share fair value (in US$) | $ | $ 32.87
Executive share plan 2015 – Component A |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Risk-free rate % | (0.32%)
Share price volatility % | 23.00%
Award term (years) | year | 2.57
Share fair value (in US$) | $ | $ 53.74
Executive share plan 2015 – Component B |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Risk-free rate % | (0.32%)
Share price volatility % | 23.00%
Award term (years) | year | 2.57
Share fair value (in US$) | $ | $ 29.53

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The weighted average fair value at the measurement date of granted equity instruments other than share options. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2018-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_47_b&doctype=Standard -URIDate 2018-03-16 + Details
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