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FINANCIAL INSTRUMENTS - Credit risk (Details) - IDR (Rp) Rp in Billions	Dec. 31, 2019	Dec. 31, 2018
FINANCIAL RISK MANAGEMENT
Maximum credit exposure	Rp 1,500
Maximum share of total receivables held by any client (as a percent)	4.38%
Credit risk
FINANCIAL RISK MANAGEMENT
Maximum credit exposure	Rp 31,301	Rp 30,680
Credit risk | Cash and cash equivalents
FINANCIAL RISK MANAGEMENT
Maximum credit exposure	18,241	17,435
Credit risk | Trade and other receivables
FINANCIAL RISK MANAGEMENT
Maximum credit exposure	11,272	9,928
Credit risk | Contract asset
FINANCIAL RISK MANAGEMENT
Maximum credit exposure	944	1,560
Credit risk | Other current financial asset
FINANCIAL RISK MANAGEMENT
Maximum credit exposure	554	1,314
Credit risk | Other non-current assets
FINANCIAL RISK MANAGEMENT
Maximum credit exposure	Rp 290	Rp 443

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- Definition

The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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The maximum percentage that any customer's accounts receivable balance comprises of the total receivables balance as of the balance sheet date.

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