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PENSION AND OTHER POST-EMPLOYMENT BENEFITS - Pension benefit cost (Plan Assets) (Details) - The company - Funded pension - IDR (Rp) Rp in Billions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Corporate bonds |  |
Plan Assets |  |
Fixed income instruments | Rp 341 | Rp 314
Level 1 |  |
Plan Assets |  |
Cash and cash equivalents | 521 | 873
Equity-based mutual fund | 1,027 | 1,336
Total | 12,747 | 13,023
Level 1 | Finance |  |
Plan Assets |  |
Equity instruments | 1,735 | 1,456
Level 1 | Consumer goods |  |
Plan Assets |  |
Equity instruments | 1,085 | 1,336
Level 1 | Infrastructure, utilities and transportation |  |
Plan Assets |  |
Equity instruments | 540 | 530
Level 1 | Construction, property and real estate |  |
Plan Assets |  |
Equity instruments | 210 | 199
Level 1 | Basic industry and chemical |  |
Plan Assets |  |
Equity instruments | 135 | 124
Level 1 | Trading, service and investment |  |
Plan Assets |  |
Equity instruments | 395 | 420
Level 1 | Mining |  |
Plan Assets |  |
Equity instruments | 159 | 112
Level 1 | Agriculture |  |
Plan Assets |  |
Equity instruments | 70 | 55
Level 1 | Miscellaneous industries |  |
Plan Assets |  |
Equity instruments | 292 | 362
Level 1 | Government bonds |  |
Plan Assets |  |
Fixed income instruments | 6,493 | 6,166
Level 1 | Mutual funds |  |
Plan Assets |  |
Fixed income instruments | 85 | 54
Unquoted |  |
Plan Assets |  |
Direct placement | 374 | 288
Property | 186 | 178
Others | 339 | 308
Total | 6,976 | 6,041
Unquoted | Corporate bonds |  |
Plan Assets |  |
Fixed income instruments | Rp 6,077 | Rp 5,267

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- Definition The amount instruments representing debt (rather than equity) 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 2019-01-01 -Paragraph 142 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_142_c&doctype=Standard -URIDate 2019-03-27 + Details
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