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Employee Benefits (Details) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Employee Benefits
Contributions to medical and pension schemes	¥ 1,778.7	¥ 1,786.5	¥ 1,710.4
Other employee benefits	1,412.9	1,398.1	1,202.8
Total group's employee welfare benefits expense	¥ 3,191.6	¥ 3,184.6	¥ 2,913.2

X

- Definition

Represents the amount of the cost recognized during the period for medical and pension schemes under defined contribution plans.

+ References

No definition available.

+ Details

Name:	ntes_DefinedContributionPlanCostRecognizedMedicalAndPensionSchemes
Namespace Prefix:	ntes_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the amount of the cost recognized during the period for other employee benefits under defined contribution plans.

+ References

No definition available.

+ Details

Name:	ntes_DefinedContributionPlanCostRecognizedOtherEmployeeBenefits
Namespace Prefix:	ntes_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480794/715-70-50-1

+ Details

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