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Revenues and Deferred Revenue - Additional Information (Details1) ¥ in Thousands	Dec. 31, 2019 CNY (¥)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-01-01
Disaggregation Of Revenue [Line Items]
Recognized revenue of remaining performance obligation	¥ 1,670,076
Revenue, remaining performance obligation, expected timing of satisfaction, period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01
Disaggregation Of Revenue [Line Items]
Recognized revenue of remaining performance obligation	¥ 1,199,727
Revenue, remaining performance obligation, expected timing of satisfaction, period	24 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2023-01-01
Disaggregation Of Revenue [Line Items]
Recognized revenue of remaining performance obligation	¥ 358,967
Revenue, remaining performance obligation, expected timing of satisfaction, period

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (a)
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