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CONTRACT LIABILITIES (Details) $ in Millions, Rp in Billions	12 Months Ended
	Dec. 31, 2020 IDR (Rp)	Dec. 31, 2019 IDR (Rp)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 IDR (Rp)
Current
Contract liabilities - current portion		Rp 7,430	$ 557	Rp 7,832
Non-current
Contract liabilities - non-current portion		805	$ 72	1,007
Contract liabilities at the beginning period which recognized as revenue in current year	Rp 7,430	5,252
Mobile
Current
Contract liabilities - current portion		5,199		5,047
Enterprise
Current
Contract liabilities - current portion		1,261		1,884
Non-current
Contract liabilities - non-current portion		83		68
WIB
Current
Contract liabilities - current portion		721		668
Non-current
Contract liabilities - non-current portion		327		344
Consumer
Current
Contract liabilities - current portion		76		112
Non-current
Contract liabilities - non-current portion		391		590
Others (each below Rp75 billion)
Current
Contract liabilities - current portion		173		121
Non-current
Contract liabilities - non-current portion		Rp 4		Rp 5

X

- Definition

The amount of current contract liabilities. [Refer: Contract liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2020-01-01
-Paragraph 105
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- Definition

The amount of non-current contract liabilities. [Refer: Contract liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2020-01-01
-Paragraph 105
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- Definition

The amount of revenue that was included in the contract liability balance at the beginning of the period. [Refer: Contract liabilities; Revenue from contracts with customers]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Number 15
-IssueDate 2020-01-01
-Paragraph 116
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