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Dividends (Tables) | 12 Months Ended
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Dec. 31, 2021
Text Block [Abstract] |
Summary of Dividends Paid |
|  |  |  | 2021 |  |  |  |  | 2020 |  |  |  |  | 2019 |
|  |  |  | cents per share |  |  | $m |  |  |  |  | cents per share |  | $m |  |  |  |  | cents per share |  |  | $m |
Paid during the year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Final (declared for previous year) |  |  |  |  | – |  |  |  | – |  |  |  |  | – |  |  | – |  |  |  |  |  | 78.1 |  |  |  | 139 |
Interim |  |  |  |  | – |  |  |  | – |  |  |  |  | – |  |  | – |  |  |  |  |  | 39.9 |  |  |  | 72 |
Special (note 29) |  |  |  |  | – |  |  |  | – |  |  |  |  | – |  |  | – |  |  |  |  |  | 262.1 |  |  |  | 510 |
|  |  |  |  | – |  |  |  | – |  |  |  |  | – |  |  | – |  |  |  |  |  | 380.1 |  |  |  | 721 |

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