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Principal Accounting Policies (Details 9) - PRC | 12 Months Ended
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Dec. 31, 2021
General reserve fund |
Statutory reserves |
Required minimum percentage of annual appropriations | 10.00%
Statutory threshold percentage of the reserve fund to the registered capital of the respective company, above which the appropriation is not required | 50.00%
Statutory surplus reserve |
Statutory reserves |
Required minimum percentage of annual appropriations | 10.00%
Statutory threshold percentage of the reserve fund to the registered capital of the respective company, above which the appropriation is not required | 50.00%

X
- Definition Represents the minimum percentage of statutory after-tax profit required to be appropriated for foreign-invested enterprises or the Company's VIE established in the People's Republic of China until the reserve balance reaches a specified percentage of registered capital. + References No definition available. + Details
Name: | ntes_AppropriationOfAfterTaxProfitRequiredMinimumPercentage
Namespace Prefix: | ntes_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Represents the statutory requirement ratio of the reserve fund to statutory registered capital after which mandatory contributions to the reserve fund are no longer required for the foreign-invested enterprises or Company's VIE established in the People's Republic of China. + References No definition available. + Details
Name: | ntes_AppropriationOfAfterTaxProfitToReserveFundStatutoryRequirementLimitRegisteredCapitalPercentage
Namespace Prefix: | ntes_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | ntes_StatutoryReservesLineItems
Namespace Prefix: | ntes_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ntes_StatutoryReservesByRegulatoryCountryAxis=country_CN
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ntes_StatutoryReservesAxis=ntes_GeneralReserveFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ntes_StatutoryReservesAxis=ntes_StatutorySurplusReserveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |