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Commitments and Contingencies - Additional Information (Details) - CNY (¥) ¥ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Commitments and Contingencies |  |
Capital investment commitment | ¥ 502,661 | ¥ 616,891

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- Definition The Maximum Amount Of Additional Capital Commitment + References No definition available. + Details
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Namespace Prefix: | duo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration