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Salient features - Other financial information (Details)
R in Millions
 6 Months Ended 12 Months Ended
Dec. 31, 2020
ZAR (R)
employee
Dec. 31, 2019
ZAR (R)
employee
Jun. 30, 2020
ZAR (R)
employee
Other financial information      
Total debt (including bank overdraft) R 126,341 R 137,974 R 189,730
interest-bearing debt 126,341 137,910 189,730
non-interest-bearing debt   64  
Finance expense capitalised R 602 R 1,974 R 3,520
Effective tax rate 16.20% 40.70% 22.30%
Number of employees | employee 29,187 31,363 31,001
Subsidiaries and joint operations      
Other financial information      
Capital commitments R 28,720 R 49,394 R 31,950
authorised and contracted 224,246 217,047 260,620
authorised, not yet contracted 20,031 37,827 21,136
less expenditure to date (215,557) (205,480) (249,806)
Equity accounted investments      
Other financial information      
Capital commitments 923 1,957 1,277
authorised and contracted 765 641 1,936
authorised, not yet contracted 576 1,912 1,089
less expenditure to date R (418) R (596) R (1,748)