Name:	jobs_AverageDisplayPeriodOfAdvertisementInOnlineRecruitmentServices
Namespace Prefix:	jobs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The average period over which the subscription period of recruitment packages ranges, in 'PnYnMnDTnHnMnS' format, for example,P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	jobs_AverageSubscriptionPeriodOfRecruitmentPackages
Namespace Prefix:	jobs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The average period over which contract term for business process outsourcing services ranges, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	jobs_ContractTermForBusinessProcessOutsourcingServices
Namespace Prefix:	jobs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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.

Name:	jobs_SummaryOfPrincipalAccountingPoliciesLineItems
Namespace Prefix:	jobs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Represents value-added tax (VAT) rate for certain service industries under PRC's VAT program.

No definition available.

Name:	jobs_ValueAddedTaxRate
Namespace Prefix:	jobs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 720
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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Name:	us-gaap_ContractWithCustomerLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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The amount of excise and sales taxes included in sales and revenues, which are then deducted as a cost of sales. Includes excise taxes, which are applied to specific types of transactions or items (such as gasoline or alcohol); and sales, use and value added taxes, which are applied to a broad class of revenue-producing transactions involving a wide range of goods and services.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Indicates (true false) whether practical expedient was elected to recognize incremental cost of obtaining contract as expense when incurred if amortization period would have been one year or less.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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