The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [member]]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The expected rate of salary increases used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [member]; Defined benefit obligation, at present value; Actuarial assumptions [member]]

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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.

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No definition available.

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The amount of other comprehensive income, net of tax, related to gains (losses) on remeasurements of defined benefit plans, which comprise actuarial gains and losses; the return on plan assets, excluding amounts included in net interest on the net defined benefit liability (asset); and any change in the effect of the asset ceiling, excluding amounts included in net interest on the net defined benefit liability (asset). [Refer: Other comprehensive income; Defined benefit plans [member]; Plan assets [member]; Net defined benefit liability (asset)]

+ References

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- Definition

The discount rate of pension fund used as the significant actuarial assumption to determine the present value of a defined benefit obligation.

+ References

No definition available.

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- Definition

The return on investments used as the significant actuarial assumption to determine the present value of a defined benefit obligation.

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- Definition

Amount of actuarial (loss)/gain arising from changes in financial assumptions.

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- Definition

Amount of past service cost expense recognized related to defined benefit plan.

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No definition available.

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- Definition

The amount of post-employment benefit expense before charging to subsidiaries under contractual agreements relating to defined benefit plans.

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No definition available.

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PENSION AND OTHER POST-EMPLOYMENT BENEFITS - Components of net periodic additional pension benefit cost (Details) $ in Millions, Rp in Billions	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2017 IDR (Rp)	Dec. 31, 2016 IDR (Rp)	Dec. 31, 2015 IDR (Rp)
Disclosure of defined benefit plans [line items]
Defined benefit plan actuarial gain (loss) - net of tax	$ 175	Rp 2,375	Rp 2,058	Rp (368)
Additional pension benefit obligation
Disclosure of defined benefit plans [line items]
Past service cost		657
Net periodic pension benefit cost		657
Changes in financial assumptions		419
Defined benefit plan actuarial gain (loss) - net of tax		Rp 419
Discount rate	6.75%	6.75%
Rate of compensation increases	8.00%	8.00%
Additional pension benefit obligation \| Minimum
Disclosure of defined benefit plans [line items]
Rate of return on investment	9.50	9.50
Actuarial discount rate of pension fund	9.25	9.25
Additional pension benefit obligation \| Maximum
Disclosure of defined benefit plans [line items]
Rate of return on investment	10.25	10.25
Actuarial discount rate of pension fund	9.50	9.50