CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY  
                    Equity        
                    attributable   Non-    
    Share   Share   Other   Retained   to owners   controlling    
Rm   capital   premium   reserves   profit   of the parent   interests   Total
Balance as at December 2016(Audited)    2.2   569.0   437.7   4,672.4   5,681.3   74.5   5,755.8
Dividends declared         (653.2)   (653.2)   (35.4)   (688.6)
Total comprehensive income       (84.7)   1,507.7   1,423.0   14.0   1,437.0
Changes in non-controlling interests       (103.2)     (103.2)   (9.9)   (113.1)
IFRS 2 charge and Share Trust transactions     (193.1)   203.7   (35.5)   (24.9)     (24.9)
Treasury shares acquired     25.3   (0.1)     25.2     25.2
                             
Balance as at December 2017 (Audited)   2.2   401.2   453.4   5,491.4   6,348.2   43.2   6,391.4
Effect of adoption of new accounting standards (note 3)       (0.7)   36.4   35.7     35.7
Balance as at December 2017 (Audited) Restated   2.2   401.2   452.7   5,527.8   6,383.9   43.2   6,427.1
                             
Dividends declared         (588.5)   (588.5)   (8.4)   (596.9)
Total comprehensive income       127.2   202.5   329.7   (5.7)   324.0
Changes in non-controlling interests             0.6   0.6
IFRS 2 charge and Share Trust transactions       90.8   10.7   101.5     101.5
Treasury shares acquired     (178.0)       (178.0)     (178.0)
                             
Period ended June 2018 (Reviewed)   2.2   223.2   670.7   5,152.5   6,048.6   29.7   6,078.3
                             
Balance as at December 2016 (Audited) as previously stated   2.2   569.0   437.7   4,672.4   5,681.3   74.5   5,755.8
Dividends declared         (488.1)   (488.1)   (34.2)   (522.3)
Total comprehensive income       (46.3)   369.3   323.0   3.9   326.9
Changes in non-controlling interests       (100.5)     (100.5)   (9.5)   (110.0)
IFRS 2 charge and Share Trust transactions     (151.5)   102.0   (32.0)   (81.5)     (81.5)
Treasury shares acquired     53.6   (0.2)   (1.0)   52.4     52.4
                             
Balance as at June 2017 (Reviewed)   2.2   471.1   392.7   4,520.6   5,386.6   34.7   5,421.3
                             
* Refer to note 3.