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v3.21.2

Remeasurement Items affecting operating profit - Assumptions (Details) | 12 Months Ended
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Jun. 30, 2021 R / $ R / T $ / bbl $ / kJ $ / gal | Jun. 30, 2020 R / $ $ / gal $ / kJ R / T $ / bbl | Jun. 30, 2019 R / $ $ / kJ $ / bbl R / T $ / gal
Impairment assumptions |  |  |
Long-term average crude oil price (Brent) (in USD/bbl) | 70.09 | 59.69 | 71.17
Long-term average ethane price (nominal) (in US$/gal) | $ / gal | 0.3718 | 0.3279 | 0.3904
Long-term average ammonia price (in Rand/ton) | R / T | 5,297.00 | 4,664.32 | 4,258.54
Long-term average refining margin (nominal) | 9.67 | 9.43 | 10.16
Long-term average exchange rate (R/US$) | R / $ | 14.57 | 15.20 | 14.29
Future oil price period (in years) | 5 years | 5 years | 5 years
Future ammonia price period (in years) | 5 years | 5 years | 5 years
Future exchange rate period (in years) | 5 years | 5 years | 5 years
Future ethane price period (in years) | 10 years | 10 years | 10 years
Minimum |  |  |
Impairment assumptions |  |  |
Period over which management has projected cash flows | 5 years |  |
South Africa |  |  |
Impairment assumptions |  |  |
Long-term average Southern African gas purchase price (real) | $ / kJ | 0.0841 | 0.0710 | 0.0486
Growth rate - long-term producer price index | 5.50% | 5.50% | 5.50%
Weighted average cost of capital | 14.03% | 14.22% | 13.12%
United States |  |  |
Impairment assumptions |  |  |
Growth rate - long-term producer price index | 2.00% | 2.00% | 2.00%
Weighted average cost of capital | 7.70% | 7.66% | 7.18%
Europe |  |  |
Impairment assumptions |  |  |
Growth rate - long-term producer price index | 2.00% | 2.00% | 2.00%
Europe | Minimum |  |  |
Impairment assumptions |  |  |
Weighted average cost of capital | 7.70% | 7.66% | 7.18%
Europe | Maximum |  |  |
Impairment assumptions |  |  |
Weighted average cost of capital | 9.05% | 9.79% | 9.48%

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