XML 286 R106.htm IDEA: XBRL DOCUMENT v3.21.2
Remeasurement Items affecting operating profit - Assumptions (Details)
 12 Months Ended
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%