v2.4.0.6

Income Tax Expenses - Additional Information (Detail)	12 Months Ended								12 Months Ended																				12 Months Ended
	Dec. 31, 2011 USD ($)	Dec. 31, 2011 CNY	Dec. 31, 2010 USD ($)	Dec. 31, 2010 CNY	Dec. 31, 2009 USD ($)	Dec. 31, 2009 CNY	Dec. 31, 2008 CNY	Dec. 31, 2007 CNY	Dec. 31, 2011 Minimum	Dec. 31, 2011 Maximum	Dec. 31, 2011 Shanghai Zhengduo Information Technology Co Ltd	Dec. 31, 2011 Zhuhai Zhengtu Information Technology Co Ltd	Dec. 31, 2011 Shanghai Juhe Network Technology Co Ltd	Dec. 31, 2011 Shanghai Juyan Network Technology Co Ltd	Dec. 31, 2011 Shanghai Haoji Network Technology Co Ltd	Dec. 31, 2011 Shanghai Juquan Network Technology Co Ltd	Dec. 31, 2011 Chengdu Jufan Network Technology Co Ltd	Dec. 31, 2011 Wuxi Tiema Network Technology Co Ltd	Dec. 31, 2011 Shanghai Juxin Network Technology Co Ltd	Dec. 31, 2011 Beijing Julun Network Information Technology Co Ltd	Dec. 31, 2011 Beijing Giant Glorious Mission Information Technology Co Ltd	Dec. 31, 2011 Wuxi Tiequan Network Technology Co Ltd	Dec. 31, 2011 Shanghai Giant Network Technology Co Ltd	Dec. 31, 2010 Shanghai Giant Network Technology Co Ltd	Dec. 31, 2009 Shanghai Giant Network Technology Co Ltd	Dec. 31, 2008 Shanghai Giant Network Technology Co Ltd	Dec. 31, 2011 Zhuhai Zhengtu Information Technology Co.Ltd USD ($)	Dec. 31, 2011 Zhuhai Zhengtu Information Technology Co.Ltd CNY	Dec. 31, 2011 Fiscal Year 2013	Dec. 31, 2011 Fiscal Year 2014	Dec. 31, 2011 Fiscal Year 2015	Dec. 31, 2011 Shanghai Zhengtu Information Technology Co Ltd	Dec. 31, 2010 Shanghai Zhengtu Information Technology Co Ltd	Dec. 31, 2009 Shanghai Zhengtu Information Technology Co Ltd	Dec. 31, 2008 Shanghai Zhengtu Information Technology Co Ltd	Dec. 31, 2007 Shanghai Zhengtu Information Technology Co Ltd	Dec. 31, 2006 Shanghai Zhengtu Information Technology Co Ltd	Dec. 31, 2011 Shanghai Zhengtu Information Technology Co Ltd Fiscal Year 2012	Dec. 31, 2011 Shanghai Zhengtu Information Technology Co Ltd High and New Technology Enterprises	Dec. 31, 2011 PRC
Income Taxes [Line Items]
Corporate Income Tax ("CIT") statutory rate	25.00%	25.00%	25.00%	25.00%	25.00%	25.00%					25.00%	25.00%	25.00%	25.00%	25.00%	25.00%	25.00%	25.00%	25.00%	25.00%	25.00%	25.00%	25.00%													15.00%				25.00%
Income tax holiday description																																Zhengtu Information was granted a 5-year tax holiday in 2006 which entitles it to enjoy a two-year CIT exemption followed by three-year 50% CIT reduction starting from the year 2006 to 2010. Under the PRC Income Tax Laws, it should be entitled to transitional rules whereby the CIT rate could gradually increase from 15% (which was the Zhengtu Information’s applicable tax rate in 2007) to 25% from the year 2008 to 2012 (i.e. 18%, 20%, 22%, 24% and 25% for 2008, 2009, 2010, 2011, 2012 and onwards, respectively) and the 5-year tax holiday could be retained until exhausted.
Tax holiday period																																					5 years
Tax exemption period																																					2 years
Period for CIT reduction																																					3 years
CIT tax rate reduction																																	50.00%	50.00%	50.00%	50.00%	50.00%
Suggested Corporate Income Tax ("CIT") statutory rate																																24.00%	22.00%	20.00%	18.00%			25.00%
Preferential CIT income tax rate																								15.00%	15.00%	15.00%													15.00%
Preferential CIT income tax rate period																																							3 years
Tax exemption period	On December 3, 2010, Snow wolf received certificate for Software enterprise. In year 2011, Jujia Network, Juhuo Network, Zhengju Information and Wuxi Network, all being subsidiaries of the Company, received certificates for Software Enterprises. They are entitled to full exemption from corporate income tax ("CIT") for the first and second profitable years, and a further 50% exemption for the three succeeding years	On December 3, 2010, Snow wolf received certificate for Software enterprise. In year 2011, Jujia Network, Juhuo Network, Zhengju Information and Wuxi Network, all being subsidiaries of the Company, received certificates for Software Enterprises. They are entitled to full exemption from corporate income tax ("CIT") for the first and second profitable years, and a further 50% exemption for the three succeeding years
Transitional income tax rate																													12.50%	50.00%	25.00%
Withholding income tax for dividends distributed																																								10.00%
Dividend distribution	$ 0		$ 0		$ 0
Deferred tax liability				259,415,894		259,415,894	259,415,894	259,415,894
Undistributed Earnings	413,533,323	2,602,737,384
Future enacted tax rate change									15.00%	25.00%
Valuation allowances																											458,446	2,885,413
Net operating tax losses carry forwarded	4,787,090	30,129,468
Net operating tax losses carry forwarded, expiration period	Will expire between the years 2015 and 2017.	Will expire between the years 2015 and 2017.
Net operating tax losses, expiration year									2015	2017
Unrecognized tax benefit	7,062,636	44,451,522		14,758,798		9,955,138
Recognized interest or penalties related to uncertain tax positions		0		0		0
Open tax year subject to examination by tax authorities									2005	2011

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The change in the future enacted tax rate from 15% to 25% for the non-renewal of High and New Technology Enterprise status.

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Tax year being audited in the income tax examination, in CCYY format.

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A preferential enterprise income tax ("EIT") rate granted by relevant PRC tax authorities to qualified PRC resident enterprises.

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Suggested Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate

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The period under which there's no income tax responsibility for the company when meet the requirements of tax regulations and obtain related certificates.

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Income tax-exemptions and reductions which may be granted by a taxing authority for a specified period. Such "tax holidays" are typically granted to induce business investment in the tax jurisdiction.

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Transitional Enterprise Income Tax Rates

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The sum of the tax effects as of the balance sheet date of the amount of excesses of tax deductions over gross income in a year which cannot be used on the tax returns in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset.

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The cumulative amount of all deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax. A taxable temporary difference is a difference between the tax basis and the carrying amount of an asset or liability in the financial statements prepared in accordance with generally accepted accounting principles that will result in taxable amounts in one or more future periods.

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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A description of the factual circumstances giving rise to an income tax exemption or special reduction received from a taxing jurisdiction.

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State the expiration dates of the tax credit carryforward.

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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This element represents the total of interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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The amount of the valuation allowance recorded as of the balance sheet date pertaining to the specified deferred tax asset for which an assessment was made that it is more likely than not that all or a portion of such deferred tax asset will not be realized through related deductions on future tax returns.

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