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v3.19.1

Common Shareholders' Equity (Details 2) | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2018 $ / shares | Dec. 31, 2017 $ / shares | Dec. 31, 2016 $ / shares | Dec. 31, 2015 $ / shares | Dec. 05, 2018 $ / shares | Apr. 11, 2018 $ / shares | Dec. 12, 2017 $ / shares | Dec. 06, 2017 $ / shares | Dec. 06, 2016 $ / shares | Apr. 13, 2016 $ / shares | Dec. 01, 2015 $ / shares
Interim dividend [Member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of Common Shareholders' Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Dividend paid date | Jan. 04, 2019 | Jan. 05, 2018 | Jan. 05, 2018 | Jan. 06, 2017 |  |  |  |  |  |  |
Dividend per Share | (per share) | $ 140.0000 | $ 70.0000 | $ 66.0000 | $ 66.0000 | $ 140 |  |  | $ 70 | $ 66 |  | $ 66
Year of dividend | 2018 | 2017 | 2016 | 2015 |  |  |  |  |  |  |
Final dividend [Member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of Common Shareholders' Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Dividend paid date |  | Apr. 26, 2018 | Apr. 26, 2018 | Apr. 26, 2017 |  |  |  |  |  |  |
Dividend per Share | (per share) |  | $ 108.88833 | $ 110.32236 | $ 97.47388 |  | $ 108.88833 | $ 110.32236 |  |  | $ 97.47388 |
Year of dividend |  | 2017 | 2016 | 2015 |  |  |  |  |  |  |

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- Definition The date of payment of dividend. + References No definition available. + Details
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