XML 108 R80.htm IDEA: XBRL DOCUMENT
v3.21.4

Held For Sale Assets (Details) - CNY (¥) ¥ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Aug. 31, 2020 | Apr. 30, 2019 | Dec. 31, 2020 | Nov. 30, 2020
Held For Sale Assets (Details) [Line Items] |  |  |  |
Equity ownership interest, percentage |  | 100.00% |  |
Amount of equity interest |  | ¥ 367,787 |  |
Loss on sale of stock in subsidiary |  |  | ¥ 43,032 |
Hunan Longxi [Member] |  |  |  |
Held For Sale Assets (Details) [Line Items] |  |  |  |
Equity ownership interest, percentage | 80.00% |  |  | 20.00%
Cash consideration | ¥ 200,000 |  |  |
Uncollected considerations |  |  | 175,000 |
Additional uncollected considerations |  |  | ¥ 120,000 |
Additional equity ownership interest, percentage |  |  | 50.00% |

X
- Definition The percentage of additional ownership interest of common stock or equity participation in the investee accounted for under the equity method of accounting. + References No definition available. + Details
Name: | uk_AdditionalEquityOwnershipInterestPercentage
Namespace Prefix: | uk_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Additional uncollected considerations. + References No definition available. + Details
Name: | uk_AdditionalUncollectedConsiderations
Namespace Prefix: | uk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. + References No definition available. + Details
Name: | uk_LossOnDisposalOfSubsidiaries
Namespace Prefix: | uk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Uncollected considerations. + References No definition available. + Details
Name: | uk_UncollectedConsiderations
Namespace Prefix: | uk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Net Increase or Decrease in balance of noncontrolling interest in the subsidiary during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=123454820&loc=SL4568740-111683 + Details
Name: | us-gaap_MinorityInterestPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of consideration received by subsidiary or equity investee in exchange for shares of stock issued or sold. Includes amount of cash received, fair value of noncash assets received, and fair value of liabilities assumed by the investor. + References No definition available. + Details
Name: | us-gaap_SaleOfStockConsiderationReceivedPerTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=uk_HunanLongxiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |