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Corporate Administration, Marketing And Other Costs (Tables)
12 Months Ended
Dec. 31, 2019
Disclosure of other operating expenses [Abstract]  
Schedule of Corporate Administration, Marketing and Other Costs
 
US Dollars
Figures in millions
2019

 
2018

 
2017

Corporate administration expenses
63

 
60

 
52

Share scheme and related costs
19

 
16

 
12

 
82

 
76

 
64