Buying rate used to translate the financial statements from reporting currency (RMB) into US$ for easy read.

No definition available.

Name:	ntes_BuyingRate
Namespace Prefix:	ntes_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Describes the periods of time over which an entity anticipates to receive utility from its intangible.

+ References

No definition available.

+ Details

Name:	ntes_FiniteLivedIntangibleAssetEstimatedUsefulLife
Namespace Prefix:	ntes_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 720
-SubTopic 35
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_ForeignCurrencyTranslationAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_MarketingAndAdvertisingExpenseAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
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- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TrademarksMember
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Principal Accounting Policies - Intangible assets, advertising expenses and foreign currency translation (Details) ¥ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022 CNY (¥) $ / ¥	Dec. 31, 2022 USD ($) $ / ¥	Dec. 31, 2021 CNY (¥)	Dec. 31, 2020 CNY (¥)
Advertising Expense
Advertising expenses	¥ 5,196.0	$ 753.4	¥ 3,762.8	¥ 3,782.1
Foreign currency translation
Buying rate per US$	6.8972	6.8972
License right
Intangible assets
Estimated useful lives of assets	over the license period	over the license period
Technology \| Equal to or more than
Intangible assets
Estimated useful lives of assets	7 years	7 years
Technology \| Less than
Intangible assets
Estimated useful lives of assets	10 years	10 years
Trademark
Intangible assets
Estimated useful lives of assets	10 years	10 years