United States Dollar  
  Figures in millions unless otherwise stated 2018      2017  2016   
31. TAXATION PAID            
  Amount owing at beginning of the year – continuing operations (77.5)     (107.9) (59.3)  
  SA and foreign current taxation – continuing operations (145.7)     (204.7) (204.2)  
  Amount owing at end of the year – continuing operations 5.2      77.5  107.9   
  Translation 0.8      (4.4) –   
  Total taxation paid – continuing operations (217.2)     (239.5) (155.6)