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Represents the amount of interest-free loans provided from the reporting entity or its subsidiary to the shareholders of the variable interest entity.

No definition available.

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Data Type:	xbrli:monetaryItemType
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The number of VIEs consolidated into the reporting entity.

No definition available.

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Represents the purchase price of the VIE's equity interest in certain subsidiaries of the reporting entity, to be paid by the reporting entity or its subsidiary, if permissible, under the call option agreement entered.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Represents the registered capital of the variable interest entity.

No definition available.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

No definition available.

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Data Type:	num:percentItemType
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The cumulative amount of the reporting entity's undistributed earnings or deficit.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 210
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-Name Accounting Standards Codification
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Name:	srt_OwnershipAxis=jobs_FiveOneNetMember
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Data Type:	na
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Data Type:	na
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Data Type:	na
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Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=jobs_AdCoMember
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