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PENSION AND OTHER POST-EMPLOYMENT BENEFITS - Telkomsel (Details) - IDR (Rp)
Rp in Billions
12 Months Ended
Apr. 23, 2021
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2004
Feb. 28, 2003
Disclosure of net defined benefit liability (asset) [line items]          
Employer's contributions   Rp (558) Rp (1,635)    
Telkomsel          
Disclosure of net defined benefit liability (asset) [line items]          
Percentage of haircut from CV 5.00%        
Cash value transferred Rp 814        
Pension plan participants' contributions Rp 73        
Telkomsel | Jiwasraya          
Disclosure of net defined benefit liability (asset) [line items]          
Percentage of cash value transferred 95.00%        
Periodic pension benefit cost | Telkomsel          
Disclosure of net defined benefit liability (asset) [line items]          
Percentage of participating employees contribution   18.00%      
Periodic pension benefit cost | Until 2004 | Telkomsel          
Disclosure of net defined benefit liability (asset) [line items]          
Percentage of participating employees contribution       5.00%  
Funded pension | The company          
Disclosure of net defined benefit liability (asset) [line items]          
Percentage of participating employees contribution   18.00%     8.40%