Ratio applied to convert shares from one type to another.

No definition available.

Name:	lkncy_ConversionOfStockConversionRatio
Namespace Prefix:	lkncy_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Representing the number of voting rights that each share is entitled.

+ References

No definition available.

+ Details

Name:	lkncy_NumberOfVotingRightsPerShareEntitled
Namespace Prefix:	lkncy_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- 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:	lkncy_OrdinarySharesDisclosureLineItems
Namespace Prefix:	lkncy_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares issued during the period as a result of the conversion of one class of common stock to other.

+ References

No definition available.

+ Details

Name:	lkncy_StockIssuedDuringPeriodSharesConversionFromOneClassOfStockToOther
Namespace Prefix:	lkncy_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares issued during the period as a result of the conversion of convertible securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1E

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

+ References

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

+ References

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares that have been repurchased and retired during the period.

+ References

+ Details

Name:	us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConversionOfStockByUniqueDescriptionAxis=lkncy_ConversionIntoClassOrdinarySharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

ORDINARY SHARES (Details)	1 Months Ended	12 Months Ended
ORDINARY SHARES (Details)	Jan. 31, 2024 shares	Dec. 31, 2025 Vote shares	Dec. 31, 2024 Vote shares	Dec. 31, 2023 shares
ORDINARY SHARES
Conversion from Senior Preferred Shares to Class A Ordinary Shares (in shares)	12,307,688
Class B ordinary shares
ORDINARY SHARES
Number of voting rights entitled \| Vote		10	10
Class B ordinary shares \| Conversion into Class A ordinary shares
ORDINARY SHARES
Conversion ratio		1	1
Class A ordinary shares
ORDINARY SHARES
Number of voting rights entitled \| Vote		1	1
Issue of class A ordinary shares for vested options and RSU			19,107,320	13,478,384
Conversion from Senior Preferred Shares to Class A Ordinary Shares (in shares)			12,307,688
Conversion from Class B Ordinary Shares to Class A Ordinary Shares (in Shares)		8,606,496
Vested restricted share units to the eligible employees		25,040,000
Cancellation of Class A Ordinary share(s) (in shares)		200,044