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Share-Based Payment Plans (Tables) | 12 Months Ended
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Dec. 31, 2017
Share-based payment arrangements [Abstract] |
Disclosure of range of exercise prices of outstanding share options | The total options outstanding and exercisable under these stock option plans at Dec. 31, 2018, are outlined below:
| Options outstanding
Range of exercise prices ($ per share) | Number of options (millions) |  | Weighted average remaining contractual life (years) | Weighted average exercise price ($ per share) |
5.00 - 8.00 | 2.3 |  | 5 | 6.71 |
22.00 - 30.00(1) | 0.5 |  | 1.1 | 23.69 |
5.00 - 30.00 | 2.8 |  | 4.3 | 9.66 |
(1) Options currently exercisable
Disclosure of number and weighted average remaining contractual life of outstanding share options | The total options outstanding and exercisable under these stock option plans at Dec. 31, 2018, are outlined below:
| Options outstanding
Range of exercise prices ($ per share) | Number of options (millions) |  | Weighted average remaining contractual life (years) | Weighted average exercise price ($ per share) |
5.00 - 8.00 | 2.3 |  | 5 | 6.71 |
22.00 - 30.00(1) | 0.5 |  | 1.1 | 23.69 |
5.00 - 30.00 | 2.8 |  | 4.3 | 9.66 |
(1) Options currently exercisable.

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- Definition The disclosure of the number and weighted average remaining contractual life of outstanding share options. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2017-01-01 -Paragraph 45 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2017-03-01&anchor=para_45_d&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The disclosure of the range of exercise prices for outstanding share options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2017-01-01 -Paragraph 45 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2017-03-01&anchor=para_45_d&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition Share-based payment arrangements [Abstract] + References No definition available. + Details
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