Name:	ntes_IncomeTaxHolidayEffectsOfTaxHolidaysAbstract
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The diluted per share effect of the aggregate amount of the income tax benefit resulting from the income tax holidays granted to the entity by taxing jurisdictions.

No definition available.

Name:	ntes_IncomeTaxHolidayIncomeTaxBenefitsPerShareDiluted
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Represents the statutory corporate income tax rate in the foreign jurisdiction.

No definition available.

Name:	ntes_IncomeTaxesForeignStatutoryCorporateTaxRate
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Represents the preferential tax rate applicable to the entity under the preferential tax treatment.

No definition available.

Name:	ntes_IncomeTaxesPreferentialTaxRate
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Threshold amount of taxable income.

No definition available.

Name:	ntes_TaxableIncome
Namespace Prefix:	ntes_
Data Type:	xbrli:monetaryItemType
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The amount of income taxes from which a reporting entity is exempt or for which it will receive a reduction in income taxes as a result of the income tax holiday granted by the taxing jurisdiction.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330215-122817

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Per share amount effect of the income tax benefit resulting from the income tax holidays granted by taxing jurisdictions.

Name:	us-gaap_IncomeTaxHolidayIncomeTaxBenefitsPerShare
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Data Type:	dtr-types:perShareItemType
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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:	us-gaap_IncomeTaxAuthorityAxis=country_HK
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Name:	srt_StatementScenarioAxis=ntes_TaxableIncomeBelowThresholdAmountMember
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Name:	us-gaap_IncomeTaxAuthorityAxis=country_CN
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Name:	dei_LegalEntityAxis=ntes_BoguanNeteaseHangzhouAndCertainOtherPrcSubsidiariesMember
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Name:	ntes_StatusForTaxabilityAxis=ntes_HighAndNewTechnologyEnterprisesMember
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