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PAYMENTS MADE UNDER PROTEST - Narrative (Details)
R in Millions
1 Months Ended 12 Months Ended
Dec. 31, 2014
respondent
Jun. 30, 2023
ZAR (R)
summons
legalProceeding
Jun. 30, 2022
Disclosure of contingent liabilities [line items]      
Number of legal proceedings | legalProceeding   3  
Number of summonses issued | summons   2  
Number of respondents against whom Ergo does not seek any relief | respondent 4    
Municipality interest rate on borrowings   15.30% 11.80%
Discount period   June 30, 2028 June 30, 2027
Summon, first      
Disclosure of contingent liabilities [line items]      
Estimated financial effect of contingent liabilities   R 74.0  
Summon, second      
Disclosure of contingent liabilities [line items]      
Estimated financial effect of contingent liabilities   R 31.6