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INVESTMENTS - Long-term investments (Equity method investments) - Additional information (Detail) | 12 Months Ended | 21 Months Ended | 1 Months Ended |
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Dec. 31, 2011 USD ($) | Dec. 31, 2011 CNY | Dec. 31, 2010 CNY | Dec. 31, 2009 CNY | Dec. 31, 2011 Equity Method Investee Qiyi.com Inc. USD ($) | Dec. 31, 2011 Equity Method Investee Qiyi.com Inc. CNY | Dec. 31, 2011 Equity Method Investee Qiyi.com Inc. | Dec. 31, 2011 Equity Method Investee Youa.com Inc. | Nov. 30, 2011 Equity Method Investee Youa.com Inc. USD ($) | Nov. 30, 2011 Equity Method Investee Youa.com Inc. CNY | Dec. 31, 2011 Equity Method Investee Beijing Leftbrain Network Technology Co., Ltd. | Dec. 31, 2011 Equity Method Investee Beijing Paibo Times Technology Co., Ltd. | Dec. 31, 2011 Equity Method Investee RakuBai Limited | Dec. 31, 2011 Equity Method Investee Chongqing Rongdu Technology Co., Ltd. | Dec. 31, 2011 Equity Method Investee Henan Feidian Network Technology Co., Ltd.
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of preferred shares of an equity method investee held by the Company |  |  |  |  | 39.13% | 39.13% | 39.13% |  |  |  |  |  |  |  |
Seats on board of directors of equity method investees |  |  |  |  |  |  | After the preferred share subscription, the Company had two out of total five seats on board of directors of Qiyi and accounted for the investment under the equity method due to the lack of control of its board of directors and certain substantive participating rights provided to the convertible redeemable preferred shareholders. | The Company has three out of the total seven seats on board of directors of Youa and accounted for the investment in Youa under the equity method despite holding 100% of its ordinary shares due to the lack of control of its board of directors and certain substantive participating rights provided to the convertible redeemable preferred shares holders. |  |  |  |  |  |  |
Percentage of ordinary shares in equity method investees held by the Company |  |  |  |  | 100.00% | 100.00% | 100.00% | 100.00% |  |  | 29.00% | 42.12% | 49.00% | 40.00% | 40.00%
Percentage of equity interest on an as-converted basis in an equity method investee held by the Company |  |  |  |  | 53.05% | 53.05% | 53.05% |  |  |  |  |  |  |  |
Gain recognized in the consolidated statements of comprehensive income arising from the difference between the fair value of the Company's retained noncontrolling interests in Youa and the carrying value of the assets spun off to Youa |  |  |  |  |  |  |  |  | $ 25,070,000 | 157,780,000 |  |  |  |  |
Cumulative losses by applying equity method | (28,505,000) | (179,408,000) | (8,965,000) | (229,000) | (19,040,000) | (119,850,000) |  |  |  |  |  |  |  |  |
Cash consideration for subscription of preferred shares of an equity method investee |  |  |  |  | $ 45,000,000 | 283,230,000 |  |  |  |  |  |  |  |  |

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- Definition The amount of the gain (loss) recognized by the parent and included in its attributable portion of net income for the period due to deconsolidation of a subsidiary or derecognition of a group of assets. The gain (loss) recognized and included in the net income attributable to the parent for the period is generally computed as the difference between: (a) the aggregate of: (1) the fair value of any consideration received; (2) the fair value of any retained noncontrolling investment in the former subsidiary at the date the subsidiary was deconsolidated; and (3) the carrying amount of any noncontrolling interest in the former subsidiary (including any accumulated other comprehensive income attributable to the noncontrolling interest) at the date the subsidiary was deconsolidated and (b) the carrying amount of the former subsidiary's assets and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6921930&loc=SL4582445-111684 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 39 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 36 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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