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Remeasurement items affecting operating profit - Cash Generating Units (Details) R in Millions, $ in Millions | 12 Months Ended
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Jun. 30, 2021 ZAR (R) R / $ $ / kJ $ / bbl $ / T | Jun. 30, 2021 CAD ($) | Jun. 30, 2019 ZAR (R)
Impairment |  |  |
Reversal of impairment loss | R 5,468 |  | R 949
Fuels | Secunda liquid fuels refinery |  |  |
Impairment |  |  |
Increase in discount rate | 1.00% |  |
Increase (decrease) in recoverable amount due to increase in discount rate | R (1,700) |  |
Decrease in discount rate | (1.00%) |  |
Increase (decrease) in recoverable amount due to decrease in discount rate | R 2,000 |  |
Decrease in price of Dated Brent (per unit) | $ / bbl | (1) |  |
Decrease in recoverable amount due to decrease in price of Dated Brent | R (2,800) |  |
Increase (decrease) in exchange rate | R / $ | 0.10 |  |
Increase (decrease) in recoverable amount of CGU due to change in exchange rate | R (1,500) |  |
Increase in gas prices (per unit) | $ / kJ | 1 |  |
Increase (decrease) in recoverable amount due to increase in gas prices | R (942) |  |
Chemicals Africa | South Africa Wax value chain |  |  |
Impairment |  |  |
Increase in discount rate | 1.00% |  |
Increase (decrease) in recoverable amount due to increase in discount rate | R (370) |  |
Decrease in discount rate | (1.00%) |  |
Increase (decrease) in recoverable amount due to decrease in discount rate | R 403 |  |
Increase in gas prices (per unit) | $ / kJ | 1 |  |
Increase (decrease) in recoverable amount due to increase in gas prices | R (1,700) |  |
Chemicals Africa | Chlor Alkali and PVC |  |  |
Impairment |  |  |
Increase in discount rate | 1.00% |  |
Increase (decrease) in recoverable amount due to increase in discount rate | R (264) |  |
Decrease in discount rate | (1.00%) |  |
Increase (decrease) in recoverable amount due to decrease in discount rate | R 306 |  |
Increase (decrease) in exchange rate | R / $ | 0.10 |  |
Increase (decrease) in recoverable amount of CGU due to change in exchange rate | R (240) |  |
Increase (decrease) in sales price | $ / T | 10 |  |
Increase (decrease) in recoverable amount due to change in sale prices | R 364 |  |
Gas | Sasol Canada - Shale gas assets |  |  |
Impairment |  |  |
Reversal of impairment loss | R 521 | $ 45 |

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