XML 130 R113.htm IDEA: XBRL DOCUMENT
v3.21.2

OTHER INVESTMENTS - Sensitivity analysis (Details) | Jun. 30, 2021
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Rand Refinery Operation [member] |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |
Rand US Dollar exchange rate, increase | 1.00%
Rand US Dollar exchange rate, decrease | (1.00%)
Commodity prices (gold and silver), increase | 1.00%
Commodity prices (gold and silver), decrease | (1.00%)
Rand US Dollar exchange rate in OCI net of tax, increase | 3.80%
Rand US Dollar exchange rate in OCI net of tax, decrease | 3.80%
Commodity prices (gold and silver) increase, OCI net of tax | 3.00%
Commodity prices (gold and silver) decrease , OCI net of tax | 3.00%
Volumes [member] | Rand Refinery Operation [member] |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |
Increase in unobservable input | 1.00%
Decrease in unobservable input, | (1.00%)
% Change OCI, net of tax, increase | 2.60%
% Change OCI, net of tax, decrease | (2.60%)
Weighted average cost of capital [member] | Rand Refinery Operation [member] |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |
Increase in unobservable input | 1.00%
Decrease in unobservable input, | (1.00%)
% Change OCI, net of tax, increase | (0.30%)
% Change OCI, net of tax, decrease | 0.30%
Minority discount [member] | Rand Refinery Operation [member] |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |
Increase in unobservable input | 1.00%
Decrease in unobservable input, | (1.00%)
% Change OCI, net of tax, increase | (1.20%)
% Change OCI, net of tax, decrease | 1.20%
Marketability discount [member] | Rand Refinery Operation [member] |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |
Increase in unobservable input | 1.00%
Decrease in unobservable input, | (1.00%)
% Change OCI, net of tax, increase | (1.20%)
% Change OCI, net of tax, decrease | 1.20%
Cost of equity [member] | Investment in Prestige Bullion [member] |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |
Increase in unobservable input | 1.00%
Decrease in unobservable input, | (1.00%)
% Change OCI, net of tax, increase | (1.50%)
% Change OCI, net of tax, decrease | 1.50%
Prestige Bullion dividend forecast [member] | Investment in Prestige Bullion [member] |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |
Increase in unobservable input | 1.00%
Decrease in unobservable input, | (1.00%)
% Change OCI, net of tax, increase | 0.40%
% Change OCI, net of tax, decrease | (0.40%)

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