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PRINCIPAL ACCOUNTING POLICIES (Details 14) ¥ in Millions, $ in Millions |  | 1 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2015 | Jul. 31, 2015 director | Sep. 30, 2015 CNY (¥) | Dec. 31, 2014 CNY (¥) | Dec. 31, 2012 USD ($) | Dec. 31, 2012 CNY (¥) | Jun. 13, 2012 USD ($)
Tujia |  |  |  |  |  |  |
Gain on deconsolidation of subsidiaries |  |  |  |  |  |  |
Percentage of interest before sale of redeemable convertible preferred shares | 50.00% | 50.00% |  |  |  |  |
Percentage of interest after sale of redeemable convertible preferred shares |  | 45.00% |  |  |  |  |
Number Of Seats Allocated | director |  | 6 |  |  |  |  |
Number Of Board Of Directors Seats | director |  | 12 |  |  |  |  |
China |  |  |  |  |  |  |
Dividends |  |  |  |  |  |  |
Restricted net assets of company's PRC subsidiaries and VIEs not distributable in form of dividends to parent | ¥ |  |  | ¥ 1,800 |  |  |  |
Accumulated profit of subsidiaries in PRC distributable in form of dividends to parent | ¥ |  |  | ¥ 5,900 | ¥ 5,000 |  |  |
Withholding tax rate for dividends distributed by foreign invested enterprise to their immediate holding companies outside mainland china (as a percent) |  |  | 10.00% |  |  |  |
Amount approved as payment of dividend to purchase ADSs | $ |  |  |  |  |  |  | $ 300.0
PRC withholding tax |  |  |  |  | $ 15.0 | ¥ 95 |
HK |  |  |  |  |  |  |
Dividends |  |  |  |  |  |  |
Withholding tax rate for dividends distributed by foreign invested enterprise to their immediate holding companies outside mainland china (as a percent) |  |  | 5.00% |  |  |  |

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