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PENSION AND OTHER POST-EMPLOYMENT BENEFITS - Components of net periodic pension benefit cost (Details) - IDR (Rp) Rp in Millions		12 Months Ended
	Sep. 30, 2022	Dec. 31, 2023	Dec. 31, 2022
Disclosure of defined benefit plans [line items]
Threshold minimum pension benefits	Rp 1
The company | Retired before end of June 2002
Disclosure of defined benefit plans [line items]
Maximum monthly pension benefits, settlements made		Rp 50,000	Rp 65,000
The company | Funded pension
Disclosure of defined benefit plans [line items]
Percentage of companies share in total plan assets		2.28%	1.78%
Percentage of Debt Instruments Contributed to Fair Value of Plan Assets		1.72%	1.84%
Actual return on plan asset		Rp 1,768,000	Rp 984,000
Minimum FSR required for non contribution to fund		105.00%
Funding Sufficiency Ratio		105.00%
The company | Series B shares | Funded pension
Disclosure of defined benefit plans [line items]
Equity instruments		Rp 457,000	Rp 336,000

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

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- Definition

The amount instruments representing equity (rather than debt) contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 19
-IssueDate 2023-01-01
-Paragraph 142
-Subparagraph b
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-URIDate 2023-03-23

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- Definition

The actual return on plan asset for defined benefit plan.

+ References

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- Definition

Maximum monthly pension benefits of pensioners, widow/widower or the children of participants to whom settlements are made.

+ References

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- Definition

The Funding sufficiency ratio (FSR) of the plan.

+ References

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- Definition

The percentage of debt instruments contributed to fair value of plan assets.

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- Definition

The percentage of equity instruments contributed to fair value of plan assets.

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- Definition

The minimum amount of pension benefits payable.

+ References

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- Definition

Minimum funding sufficiency ratio (FSR) required for not contributing to the fund by the company.

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