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OTHER INVESTMENTS - Narratives (Details)
Jun. 30, 2023
Jun. 30, 2022
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [table]    
Marketability unobservable inputs rate 15.30% 16.50%
Minority discounts unobservable input rate 17.00% 17.00%
Rand Refinery Proprietary Limited ("Rand Refinery") | Level 3 of fair value hierarchy [member]    
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [table]    
Percentage of interest held 11.30%