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PENSION AND OTHER POST-EMPLOYMENT BENEFITS - Pension benefit cost (Details) - IDR (Rp) Rp in Billions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Mar. 01, 2003 | Feb. 28, 2003
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |
Employer's contributions | Rp 233 |  |  |
Funded pension | The company |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |
Percentage of participating employees contribution |  |  | 18.00% | 8.40%
Pension benefit obligations at beginning of year | (1,057) |  |  |
Return on plan assets (excluding amount included in net interest expense) | (398) | Rp 1,455 |  |
Employer's contributions | 233 |  |  |
Provision of additional benefit |  | (205) |  |
Pension benefit obligations at end of year | (2,338) | (1,057) |  |
Funded pension | Present value of the defined benefit obligations | The company |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |
Pension benefit obligations at beginning of year | 20,121 | 22,354 |  |
Service costs | 259 | 384 |  |
Interest income | 1,599 | 1,459 |  |
Pension plan participants’ contributions | 33 | 38 |  |
Actuarial gains recognized in OCI | 1,514 | (2,691) |  |
Pension benefits paid | (1,465) | (1,423) |  |
Pension benefit obligations at end of year | 22,061 | 20,121 |  |
Funded pension | Plan assets | The company |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |
Pension benefit obligations at beginning of year | (19,064) | (20,814) |  |
Interest income | (1,524) | (1,357) |  |
Return on plan assets (excluding amount included in net interest expense) | 398 | (1,455) |  |
Pension plan participants’ contributions | (32) | (38) |  |
Pension benefits paid | 1,465 | 1,423 |  |
Provision of additional benefit |  | (205) |  |
Plan administration costs | (63) | (62) |  |
Pension benefit obligations at end of year | Rp (19,723) | Rp (19,064) |  |

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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from contributions to a defined benefit plan by plan participants. [Refer: Net defined benefit liability (asset); Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 141 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_141_f&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from employee service in the current period. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 141 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_141_a&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of employer contributions to retirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2019-01-01 -Paragraph 35 -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=26&code=ifrs-tx-2019-en-r&anchor=para_35_b_i&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The decrease (increase) in a net defined benefit liability (asset) resulting from the remeasurement of that net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 141 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_141_c&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from the passage of time. [Refer: Interest expense; Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 141 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_141_b&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 140 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_140_a&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from payments from the plan. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 141 -Subparagraph g -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_141_g&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from the return on plan assets, excluding amounts included in interest income or expense. The return on plans assets is interest, dividends and other revenue derived from the plan assets, together with realised and unrealised gains or losses on the plan assets, less any costs of managing plan assets and less any tax payable by the plan itself, other than tax included in the actuarial assumptions used to measure the present value of the defined benefit obligation. [Refer: Plan assets [member]; Net defined benefit liability (asset); Actuarial assumptions [member]; Interest expense (income), net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 141 -Subparagraph c -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_141_c_i&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The effect on the net defined benefit liability (asset) of expenses related to defined benefit plans that the entity classifies as being administrative. + References No definition available. + Details
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- Definition The percentage of employees contribution to defined benefit plan. + References No definition available. + Details
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from provision of additional benefit. + References No definition available. + Details
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