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TREASURY STOCK - Additional Information (Details) Rp / shares in Units, $ in Millions, Rp in Billions |  |  |  |  |  | 12 Months Ended |  |  |
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Jun. 29, 2016 IDR (Rp) shares | Dec. 21, 2015 IDR (Rp) shares | Jun. 13, 2014 IDR (Rp) shares | Jul. 30, 2013 IDR (Rp) shares | May 31, 2013 IDR (Rp) Rp / shares shares | Dec. 31, 2017 IDR (Rp) | Dec. 31, 2016 IDR (Rp) shares | Dec. 31, 2012 IDR (Rp) shares | Dec. 31, 2017 USD ($) shares | Dec. 31, 2017 IDR (Rp) shares | Dec. 31, 2015 shares | Jun. 20, 2007 shares
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares bought back |  |  |  |  |  |  |  |  |  |  |  | 211,290,500
Price per share | Rp / shares |  |  |  |  | Rp 10,714 |  |  |  |  |  |  |
Discount per share on purchase price | Rp / shares |  |  |  |  | Rp 5,575 |  |  |  |  |  |  |
Loss on sale of treasury stock | Rp |  |  |  |  | Rp 353 |  |  |  |  |  |  |
Shares resold |  |  |  |  |  |  | 864,000,000 |  |  |  |  |
Shares resold equivalent shares after stock split |  |  |  |  |  |  | 1,737,779,800 |  | 1,737,779,800 | 1,737,779,800 | 2,601,779,800 |
Value of shares resold | Rp |  |  |  |  |  |  | Rp 1,263 |  |  |  |  |
Excess of value over cost of selling |  |  |  |  |  |  | Rp 4,453 |  | $ 328 | Rp 4,453 |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Lock-in period |  |  |  |  | 0 months |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Lock-in period |  |  |  |  | 12 months |  |  |  |  |  |  |
Phase I |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Bought back shares equivalent shares after stock split |  |  |  |  |  |  |  |  | 1,007,999,964 | 1,007,999,964 |  |
Value of shares bought back | Rp |  |  |  |  |  | Rp 5,250 |  |  |  |  |  |
Shares resold |  |  |  | 211,290,500 |  |  |  |  |  |  |  |
Shares resold equivalent shares after stock split |  |  |  | 1,056,452,500 |  |  |  |  |  |  |  |
Value of shares resold | Rp |  |  |  | Rp 2,368 |  |  |  |  |  |  |  |
Excess of value over cost of selling | Rp |  |  |  | Rp 544 |  |  |  |  |  |  |  |
Phase II |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Bought back shares equivalent shares after stock split |  |  |  |  |  |  |  |  | 215,000,000 | 215,000,000 |  |
Value of shares bought back | Rp |  |  |  |  |  | 2,000 |  |  |  |  |  |
Shares resold |  |  | 215,000,000 |  |  |  |  |  |  |  |  |
Shares resold equivalent shares after stock split |  |  | 1,075,000,000 |  |  |  |  |  |  |  |  |
Value of shares resold | Rp |  |  | Rp 2,541 |  |  |  |  |  |  |  |  |
Excess of value over cost of selling | Rp |  |  | Rp 576 |  |  |  |  |  |  |  |  |
Phase III |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Bought back shares equivalent shares after stock split |  |  |  |  |  |  |  |  | 339,443,313 | 339,443,313 |  |
Value of shares bought back | Rp |  |  |  |  |  | 3,000 |  |  |  |  |  |
Shares resold |  | 4,472,600 |  |  | 59,811,400 |  |  |  |  |  |  |
Shares resold equivalent shares after stock split |  | 22,363,000 |  |  | 299,057,000 |  |  |  |  |  |  |
Value of shares resold | Rp |  | Rp 68 |  |  | Rp 661 |  |  |  |  |  |  |
Excess of value over cost of selling | Rp |  | Rp 36 |  |  | Rp 228 |  |  |  |  |  |  |
Phase IV |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares bought back |  |  |  |  |  |  |  | 237,270,500 |  |  |  |
Bought back shares equivalent shares after stock split |  |  |  |  |  |  |  | 1,186,352,500 | 645,161,290 | 645,161,290 |  |
Value of shares bought back | Rp |  |  |  |  |  | Rp 5,000 |  | Rp 1,744 |  |  |  |
Shares resold | 172,800,000 |  |  |  |  |  |  |  |  |  |  |
Shares resold equivalent shares after stock split | 864,000,000 |  |  |  |  |  |  |  |  |  |  |
Value of shares resold | Rp | Rp 3,259 |  |  |  |  |  |  |  |  |  |  |
Excess of value over cost of selling | Rp | Rp 1,996 |  |  |  |  |  |  |  |  |  |  |

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