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Royalties Paid
 12 Months Ended
Dec. 31, 2023
Disclosure of Royalty Payment [abstract]  
Royalties paid Royalties paid
United States Dollar
Figures in millions unless otherwise stated
2023
2022
2021
Amount owing at beginning of the year
(17.9)
(20.6)
(17.7)
Royalties
(116.4)
(110.4)
(112.4)
Amount owing at end of the year
21.0
17.9
20.6
Translation
(0.1)
0.8
0.7
Total royalties paid
(113.4)
(112.3)
(108.8)