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v3.22.2.2

Remeasurement Items affecting operating profit - Assumptions (Details) | 12 Months Ended
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Jun. 30, 2022 R / $ $ / bbl R / T $ / gal $ / kJ | Jun. 30, 2021 R / $ $ / gal R / T $ / bbl $ / kJ | Jun. 30, 2020 R / $ $ / bbl $ / gal R / T $ / kJ
Impairment assumptions |  |  |
Long-term average crude oil price (Brent) (in USD/bbl) | 93.24 | 70.09 | 59.69
Long-term average ethane price (in US$/gal) | $ / gal | 0.4315 | 0.3718 | 0.3279
Long-term average ammonia price (in Rand/ton) | R / T | 10,173.00 | 5,297.00 | 4,664.32
Long-term average refining margin (in US$/bbl) | 12.23 | 9.67 | 9.43
Long-term average exchange rate (in Rand/US$) | R / $ | 15.95 | 14.57 | 15.20
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) (in US$/Gj) | $ / kJ | 0.0894 | 0.0841 | 0.0710
Growth rate - long-term Producer Price Index | 5.50% | 5.50% | 5.50%
Weighted average cost of capital | 14.41% | 14.03% | 14.22%
United States |  |  |
Impairment assumptions |  |  |
Growth rate - long-term Producer Price Index | 2.00% | 2.00% | 2.00%
Weighted average cost of capital | 8.13% | 7.70% | 7.66%
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 | 8.13% | 7.70% | 7.66%
Europe | Maximum |  |  |
Impairment assumptions |  |  |
Weighted average cost of capital | 9.57% | 9.05% | 9.79%

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