v3.26.1
Leases - Right of use assets (Details) - ZAR (R)
R in Millions
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Disclosure of quantitative information about right-of-use assets [line items]    
Carrying amount at beginning of year R 11,834 R 12,351
Additions 2,438 1,953
Modifications and reassessments 372 689
Reclassification to assets   (129)
Translation of foreign operations (478) 10
Terminations (46) (154)
Current year depreciation charge (2,407) (2,503)
Net (impairment)/reversal of right of use assets (338) (383)
Carrying amount at end of year 11,375 11,834
Land    
Disclosure of quantitative information about right-of-use assets [line items]    
Carrying amount at beginning of year 254 117
Additions 15 13
Translation of foreign operations (16) 7
Terminations   (17)
Current year depreciation charge (10) (8)
Net (impairment)/reversal of right of use assets   142
Carrying amount at end of year 243 254
Buildings    
Disclosure of quantitative information about right-of-use assets [line items]    
Carrying amount at beginning of year 5,122 5,101
Additions 1,565 868
Modifications and reassessments (7) 35
Translation of foreign operations (88) 28
Terminations (1) (5)
Current year depreciation charge (594) (553)
Net (impairment)/reversal of right of use assets (156) (352)
Carrying amount at end of year 5,841 5,122
Plant, equipment and vehicles    
Disclosure of quantitative information about right-of-use assets [line items]    
Carrying amount at beginning of year 6,458 7,133
Additions 858 1,072
Modifications and reassessments 379 654
Reclassification to assets   (129)
Translation of foreign operations (374) (25)
Terminations (45) (132)
Current year depreciation charge (1,803) (1,942)
Net (impairment)/reversal of right of use assets (182) (173)
Carrying amount at end of year 5,291 6,458
Cost    
Disclosure of quantitative information about right-of-use assets [line items]    
Carrying amount at beginning of year 24,885 23,892
Carrying amount at end of year 25,849 24,885
Cost | Land    
Disclosure of quantitative information about right-of-use assets [line items]    
Carrying amount at beginning of year 305 326
Carrying amount at end of year 301 305
Cost | Buildings    
Disclosure of quantitative information about right-of-use assets [line items]    
Carrying amount at beginning of year 9,840 8,919
Carrying amount at end of year 10,897 9,840
Cost | Plant, equipment and vehicles    
Disclosure of quantitative information about right-of-use assets [line items]    
Carrying amount at beginning of year 14,740 14,647
Carrying amount at end of year 14,651 14,740
Accumulated depreciation and impairment    
Disclosure of quantitative information about right-of-use assets [line items]    
Carrying amount at beginning of year (13,051) (11,541)
Carrying amount at end of year (14,474) (13,051)
Accumulated depreciation and impairment | Land    
Disclosure of quantitative information about right-of-use assets [line items]    
Carrying amount at beginning of year (51) (209)
Carrying amount at end of year (58) (51)
Accumulated depreciation and impairment | Buildings    
Disclosure of quantitative information about right-of-use assets [line items]    
Carrying amount at beginning of year (4,718) (3,818)
Carrying amount at end of year (5,056) (4,718)
Accumulated depreciation and impairment | Plant, equipment and vehicles    
Disclosure of quantitative information about right-of-use assets [line items]    
Carrying amount at beginning of year (8,282) (7,514)
Carrying amount at end of year R (9,360) R (8,282)