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Share Based Award Plan - Additional Information (Detail) (Parent Company) In Millions, except Share data, unless otherwise specified | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2013 2008 Plan | Dec. 31, 2013 Restricted Stock USD ($) | Dec. 31, 2013 Restricted Stock CNY | Dec. 31, 2012 Restricted Stock CNY | Dec. 31, 2011 Restricted Stock CNY | Dec. 31, 2013 Restricted Stock Minimum | Dec. 31, 2013 Restricted Stock Maximum | Dec. 31, 2013 Stock Options USD ($) | Dec. 31, 2013 Stock Options CNY | Dec. 31, 2012 Stock Options USD ($) | Dec. 31, 2012 Stock Options CNY | Dec. 31, 2011 Stock Options USD ($) | Dec. 31, 2011 Stock Options CNY | Dec. 31, 2013 Employee Holding No More Than Ten Percent Voting Power Maximum | Dec. 31, 2013 Employee Holding More Than Ten Percent Voting Power Minimum | Dec. 31, 2013 Employee Holding More Than Ten Percent Voting Power Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserved ordinary shares for issuance under share-based awards plan |  | 3,428,777 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum contractual term of share-based awards granted |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  | 5 years
Percentage of voting power | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of the fair market value of the entity's ordinary shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 110.00% |
Shares vesting term (in years) |  |  |  |  |  |  | 2 years | 4 years |  |  |  |  |  |  |  |  |
Total intrinsic value of options exercised |  |  |  |  |  |  |  |  | $ 18.87 | 114.21 |  | 200.91 |  | 275.86 |  |  |
Unrecognized share-based compensation cost |  |  | 107.86 | 652.94 |  |  |  |  | 59.02 | 357.31 |  |  |  |  |  |  |
A weighted-average vesting period over which the deferred cost is expected to be recognized (in years) |  |  | 2 years 9 months 29 days | 2 years 9 months 29 days |  |  |  |  | 2 years 10 months 24 days | 2 years 10 months 24 days |  |  |  |  |  |  |
The weighted-average grant-date fair value of options granted during respective years |  |  |  |  |  |  |  |  | $ 419.80 |  | $ 323.00 |  | $ 432.68 |  |  |  |
Total fair value of shares vested during respective years, restricted shares |  |  | $ 40.84 | 247.24 | 128.70 | 198.77 |  |  |  |  |  |  |  |  |  |  |

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- Definition The minimum percentage of a share option's exercise over the fair value of the ordinary share on the date of that grant. + References No definition available. + Details
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- Definition The minimum percentage of voting power held by an employee whose granted incentive share option's term are subject to a maximum of five years, and the exercise price cannot be less than 110% of the fair market value of the company's ordinary shares on the date of that grant. + References No definition available. + Details
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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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