XML 155 R125.htm IDEA: XBRL DOCUMENT
v3.21.1

Commitments and Contingencies (Details) ¥ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 CNY (¥)
Commitments and Contingencies Disclosure [Abstract] |
Long term investment | ¥ 18,800
Outstanding capital commitments | ¥ 26

X
- Definition Outstanding capital commitments. + References No definition available. + Details
Name: | uk_OutstandingCapitalCommitments
Namespace Prefix: | uk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment. + References No definition available. + Details
Name: | us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration