XML 97 R67.htm IDEA: XBRL DOCUMENT v3.21.1

Business Acquisitions (Details) - Schedule of purchase price - Shenzhen Weido [Member] ¥ in Thousands	12 Months Ended
	Dec. 31, 2018 CNY (¥)
Business Acquisition [Line Items]
Cash consideration	¥ 3,200
Share consideration	95,147
5% equity interest in Shenzhen Weido Fair value:	5,177
Carrying amount	3,000
Remeasurement gain upon step acquisition	2,177
Total purchase consideration	¥ 103,524

X

- Definition

Carrying amount of 5% equity interest in Shenzhen Weido Fair value.

+ References

No definition available.

+ Details

Name:	uk_BusinessCombinationCarryingAmountAcquisitionLessThan100Percent
Namespace Prefix:	uk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Cash consideration.

+ References

No definition available.

+ Details

Name:	uk_BusinessCombinationCashConsiderations
Namespace Prefix:	uk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Remeasurement gain upon step acquisition.

+ References

No definition available.

+ Details

Name:	uk_BusinessCombinationRemeasurementGainUponStepAcquisition
Namespace Prefix:	uk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Share consideration.

+ References

No definition available.

+ Details

Name:	uk_BusinessCombinationShareConsideration
Namespace Prefix:	uk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472

+ Details

Name:	us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount recognized as of the acquisition date for the assets, including goodwill, in excess of (less than) the aggregate liabilities assumed, less the noncontrolling interest in the acquiree.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472

+ Details

Name:	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=uk_ShenzhenWeidoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: