XML 102 R50.htm IDEA: XBRL DOCUMENT
v3.20.1

Organization and principal activities (Details) | 12 Months Ended
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Dec. 31, 2019
Business Operation Agreement |
Variable Interest Entity [Line Items] |
Agreement term | 10 years
Threshold period of written notice required to terminate the agreement | 30 days
Exclusive Option Agreements |
Variable Interest Entity [Line Items] |
Threshold period of written notice required to terminate the agreement | 10 years

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- Definition Represents the term of agreement. + References No definition available. + Details
Name: | duo_AgreementTerm
Namespace Prefix: | duo_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the threshold period of written notice required to terminate the agreement. + References No definition available. + Details
Name: | duo_ThresholdNoticePeriodRequiredToTerminateAgreement
Namespace Prefix: | duo_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=duo_BusinessOperationAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=duo_ExclusiveOptionAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |