Represents the percentage of cash and cash equivalent and time deposits held by affiliates.

No definition available.

Name:	ntes_CashAndCashEquivalentAndTimeDepositsHeldByAffiliatesPercentage
Namespace Prefix:	ntes_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Includes currency on hand as well as demand and time deposits with banks or financial institutions.

+ References

No definition available.

+ Details

Name:	ntes_CashAndCashEquivalentsAndTimeDeposits
Namespace Prefix:	ntes_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the number of revenue models used for PC-client game services revenue recognition.

+ References

No definition available.

+ Details

Name:	ntes_RevenueRecognitionTypesOfPcClientGameServicesRevenueModels
Namespace Prefix:	ntes_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents term of advertising service contracts.

+ References

No definition available.

+ Details

Name:	ntes_TermOfAdvertisingServiceContracts
Namespace Prefix:	ntes_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Term of sublicenses of music contents to other music platforms.

+ References

No definition available.

+ Details

Name:	ntes_TermOfSublicensesOfMusicContents
Namespace Prefix:	ntes_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents certificate of deposits or savings account held by a bank or other financial institution for a short-term specified period of time. These investments generally have original maturities of three months or more.

+ References

No definition available.

+ Details

Name:	ntes_TimeDepositsShortAndLongTerm
Namespace Prefix:	ntes_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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

- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3044-108585

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(1))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_CashAndCashEquivalentsAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Indicates (true false) whether practical expedient was elected not to adjust consideration for effect of financing component when transfer and customer payment for product or service occurs within one year or less.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 22
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130569-203045

+ Details

Name:	us-gaap_RevenuePracticalExpedientFinancingComponent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:booleanItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=126905575&loc=SL51790836-203054

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 22
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130569-203045

+ Details

Name:	us-gaap_RevenuePracticalExpedientIncrementalCostOfObtainingContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:booleanItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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

- Details

Name:	dei_LegalEntityAxis=ntes_SubsidiaryAndVariableInterestEntityInPrcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CurrencyAxis=currency_USD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

Principal Accounting Policies - Revenue recognition, cost of revenues and cash, cash equivalents and time deposits (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022 CNY (¥) item	Dec. 31, 2022 USD ($)	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)
Revenue recognition
Number of revenue models used for PC-client game services \| item	2
Practical expedients - financing component	true
Practical expedients - costs to obtain a contract	true
Cash, cash equivalents and time deposits
Cash at bank and demand deposits	¥ 24,889,000	$ 3,608,566	¥ 14,498,157
PRC subsidiaries and VIEs
Cash, cash equivalents and time deposits
Cash and cash equivalent and time deposits held by PRC subsidiaries and VIEs \| ¥	¥ 48,100,000		¥ 40,500,000
Percentage of cash and cash equivalent and time deposits held by PRC subsidiaries and VIEs	42.60%	42.60%	44.40%	44.40%
Denominated in U.S. dollars
Cash, cash equivalents and time deposits
Cash at bank and demand deposits	¥ 4,344,700	$ 623,800	¥ 2,540,300	$ 398,400
Time deposits	¥ 58,648,900	$ 8,421,000	¥ 43,654,400	$ 6,847,000
Less than
Revenue recognition
Term of sublicenses of music contents	3 years
Term of advertising service contracts	3 months
Equal to or more than
Revenue recognition
Term of sublicenses of music contents	1 year