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Principal Accounting Policies (Details 3) ¥ in Millions	12 Months Ended
	Dec. 31, 2021 CNY (¥) agreement	Dec. 31, 2020 CNY (¥) agreement
Restricted cash
Total restricted cash	¥ 2,878.0	¥ 3,051.4
Number of other lien arrangements | agreement	0	0
Customer deposit | NetEase Pay
Restricted cash
Total restricted cash	¥ 2,091.3	¥ 1,722.0
Pledge deposits for short-term bank borrowings
Restricted cash
Total restricted cash		1,295.0
Deposit required by the PRC government authorities related to Youdao's educational services | Youdao
Restricted cash
Total restricted cash	749.8
Others
Restricted cash
Total restricted cash	¥ 36.9	¥ 34.4

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=123431023&loc=SL98516268-108586

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(1)(a))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(2))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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