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Capital Structure (Details)	12 Months Ended
	Dec. 31, 2020 Vote
Capital Structure
Voting rights per share	1

X

- References

No definition available.

+ Details

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

X

- Definition

The number of voting rights per each ordinary share held.

+ References

No definition available.

+ Details

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Namespace Prefix:	ntes_
Data Type:	xbrli:integerItemType
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Period Type:	duration