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Financial risk management and financial instruments - Contractual Cash Flows (Details)
R in Millions, $ in Billions
Jun. 30, 2022
ZAR (R)
Jun. 30, 2022
USD ($)
Jun. 30, 2021
ZAR (R)
Financial risk management and financial instruments      
Net debt to EBITDA 0.8 0.8  
Threshold of net debt to EBITDA 3 3  
Contractual cash flows, financial assets R 97,837   R 75,494
Contractual cash flows, non-derivative liabilities (183,731)   (175,505)
Contractual cash flows, financial liabilities (201,362)   (193,711)
Within one year      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 91,823   68,482
Contractual cash flows, non-derivative liabilities (62,168)   (35,899)
Contractual cash flows, financial liabilities (77,955)   (47,117)
One to three years      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 1,582   1,329
Contractual cash flows, non-derivative liabilities (56,021)   (71,257)
Contractual cash flows, financial liabilities (56,021)   (72,217)
Three to five years      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 919   1,149
Contractual cash flows, non-derivative liabilities (17,590)   (10,924)
Contractual cash flows, financial liabilities (17,590)   (11,437)
More than five years      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 3,513   4,534
Contractual cash flows, non-derivative liabilities (47,952)   (57,425)
Contractual cash flows, financial liabilities (49,796)   (62,940)
Long-term debt      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (123,107)   (119,921)
Long-term debt | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (25,980)   (8,997)
Long-term debt | One to three years      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (51,730)   (66,190)
Long-term debt | Three to five years      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (14,527)   (6,698)
Long-term debt | More than five years      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (30,870)   (38,036)
Lease liabilities      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (27,107)   (31,679)
Lease liabilities | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (2,671)   (2,997)
Lease liabilities | One to three years      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (4,291)   (5,067)
Lease liabilities | Three to five years      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (3,063)   (4,226)
Lease liabilities | More than five years      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (17,082)   (19,389)
Short-term debt      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (82)   (60)
Short-term debt | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (82)   (60)
Trade and other payables      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (33,262)   (23,289)
Trade and other payables | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (33,262)   (23,289)
Bank overdraft      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (173)   (243)
Bank overdraft | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities (173)   (243)
Financial guarantees      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities     (313)
Financial guarantees | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, non-derivative liabilities     (313)
Foreign exchange contracts      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities (8,986)   (8,134)
Foreign exchange contracts | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities (8,986)   (8,134)
Interest rate swap      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities     (2,234)
Interest rate swap | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities     (668)
Interest rate swap | One to three years      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities     (960)
Interest rate swap | Three to five years      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities     (513)
Interest rate swap | More than five years      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities     (93)
Crude oil put options      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities     (46)
Crude oil put options | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities     (46)
Foreign exchange zero cost collars      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities (454)    
Foreign exchange zero cost collars | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities (454)    
Crude oil zero cost collar      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities (6,176)   (1,126)
Crude oil zero cost collar | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities (6,176)   (1,126)
Coal swap options      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities (112)    
Coal swap options | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities (112)    
Crude oil swap options      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities     (1,175)
Crude oil swap options | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities     (1,175)
Crude oil futures      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities     (20)
Crude oil futures | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities     (20)
Other currency derivatives      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities (1,850)   (5,422)
Other currency derivatives | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities (6)    
Other currency derivatives | More than five years      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities (1,844)   (5,422)
Other commodity derivatives      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities (53)   (49)
Other commodity derivatives | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, derivative liabilities (53)   (49)
Non-derivative instruments      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 87,417   64,237
Non-derivative instruments | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 82,570   58,845
Non-derivative instruments | One to three years      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 1,447   1,098
Non-derivative instruments | Three to five years      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 777   908
Non-derivative instruments | More than five years      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 2,623   3,386
Long-term receivables      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 3,316   3,970
Long-term receivables | One to three years      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 1,447   1,098
Long-term receivables | Three to five years      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 777   908
Long-term receivables | More than five years      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 1,092   1,964
Trade and other receivables      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 38,936   27,140
Trade and other receivables | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 38,936   27,140
Cash and cash equivalents      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 43,141   31,231
Cash and cash equivalents | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 43,141   31,231
Investments through other comprehensive income      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 493   474
Investments through other comprehensive income | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 493   474
Long-term restricted cash      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 1,531   1,422
Long-term restricted cash | More than five years      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 1,531   1,422
Foreign exchange contracts      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 9,005   8,169
Foreign exchange contracts | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 9,005   8,169
Crude oil futures      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 25    
Crude oil futures | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 25    
Crude oil put options      
Financial risk management and financial instruments      
Contractual cash flows, financial assets     46
Crude oil put options | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, financial assets     46
Foreign exchange zero cost collars      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 76   1,150
Foreign exchange zero cost collars | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 76   1,150
Crude oil zero cost collar      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 17    
Crude oil zero cost collar | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 17    
Ethane swap options      
Financial risk management and financial instruments      
Contractual cash flows, financial assets     156
Ethane swap options | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, financial assets     156
Other commodity derivatives      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 61   9
Other commodity derivatives | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 61   9
Other currency derivatives      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 1,236   1,727
Other currency derivatives | Within one year      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 69   107
Other currency derivatives | One to three years      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 135   231
Other currency derivatives | Three to five years      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 142   241
Other currency derivatives | More than five years      
Financial risk management and financial instruments      
Contractual cash flows, financial assets 890   R 1,148
US Dollar Bond November 2022      
Financial risk management and financial instruments      
Notional amount R 16,000 $ 1