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Taxation (Details 5) | 4 Months Ended | 9 Months Ended | 11 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 30, 2018 | Dec. 31, 2019 | Mar. 31, 2019 | Dec. 31, 2020
Sales tax |  |  |  |
Value added tax rate, services provided (as a percent) |  |  |  | 6.00%
Value added tax rate, sales of general goods (as a percent) | 17.00% | 13.00% | 16.00% | 13.00%

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- Definition Abstract of sales tax, includes, but not limited to business tax, cultural development fee and value added tax. + References No definition available. + Details
Name: | ntes_SalesTaxAbstract
Namespace Prefix: | ntes_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Value Added Tax rate applied on gross sales proceeds received from sale of goods. + References No definition available. + Details
Name: | ntes_ValueAddedTaxRateSaleOfGoods
Namespace Prefix: | ntes_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Value Added Tax rate applied on revenues earned from services provided. + References No definition available. + Details
Name: | ntes_ValueAddedTaxRateServicesProvided
Namespace Prefix: | ntes_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration