Fair Value Measurements - Schedule of Financial Instruments Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Assets
Cash	$ 439,200	$ 132,500
Short-term investments	705,172	1,225,124
Cash and cash equivalents and short-term investments	1,800,000	2,000,000
Restricted cash	3,000
Restricted cash and cash equivalents and restricted short-term investments	1,900,000	1,500,000
Fair Value Measurements on a Recurring Basis
Assets
Total unrestricted cash equivalents and short-term investments	1,037,844	1,547,248
Total restricted cash equivalents and investments	1,933,098	1,539,974
Total financial assets	2,970,942	3,087,222
Fair Value Measurements on a Recurring Basis \| Level 1
Assets
Total unrestricted cash equivalents and short-term investments	276,077	189,839
Total restricted cash equivalents and investments	47,264	42,699
Total financial assets	323,341	232,538
Fair Value Measurements on a Recurring Basis \| Level 2
Assets
Total unrestricted cash equivalents and short-term investments	761,767	1,357,409
Total restricted cash equivalents and investments	1,885,834	1,497,275
Total financial assets	2,647,601	2,854,684
Fair Value Measurements on a Recurring Basis \| Level 3
Assets
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	0	0
Total financial assets	0	0
Fair Value Measurements on a Recurring Basis \| Money market funds
Assets
Total unrestricted cash equivalents and short-term investments	276,077	189,839
Total restricted cash equivalents and investments	47,264	42,699
Fair Value Measurements on a Recurring Basis \| Money market funds \| Level 1
Assets
Total unrestricted cash equivalents and short-term investments	276,077	189,839
Total restricted cash equivalents and investments	47,264	42,699
Fair Value Measurements on a Recurring Basis \| Money market funds \| Level 2
Assets
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| Money market funds \| Level 3
Assets
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| Certificates of deposit
Assets
Total unrestricted cash equivalents and short-term investments	143,471	171,358
Total restricted cash equivalents and investments	104,370	189,596
Fair Value Measurements on a Recurring Basis \| Certificates of deposit \| Level 1
Assets
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| Certificates of deposit \| Level 2
Assets
Total unrestricted cash equivalents and short-term investments	143,471	171,358
Total restricted cash equivalents and investments	104,370	189,596
Fair Value Measurements on a Recurring Basis \| Certificates of deposit \| Level 3
Assets
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| Commercial paper
Assets
Total unrestricted cash equivalents and short-term investments	216,525	762,546
Total restricted cash equivalents and investments	922,364	782,556
Fair Value Measurements on a Recurring Basis \| Commercial paper \| Level 1
Assets
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| Commercial paper \| Level 2
Assets
Total unrestricted cash equivalents and short-term investments	216,525	762,546
Total restricted cash equivalents and investments	922,364	782,556
Fair Value Measurements on a Recurring Basis \| Commercial paper \| Level 3
Assets
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| Corporate bonds
Assets
Total unrestricted cash equivalents and short-term investments	267,491	70,231
Total restricted cash equivalents and investments	15,037	59,266
Fair Value Measurements on a Recurring Basis \| Corporate bonds \| Level 1
Assets
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| Corporate bonds \| Level 2
Assets
Total unrestricted cash equivalents and short-term investments	267,491	70,231
Total restricted cash equivalents and investments	15,037	59,266
Fair Value Measurements on a Recurring Basis \| Corporate bonds \| Level 3
Assets
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| U.S. government and agency securities
Assets
Total unrestricted cash equivalents and short-term investments	134,280
Total restricted cash equivalents and investments	844,063
Fair Value Measurements on a Recurring Basis \| U.S. government and agency securities \| Level 1
Assets
Total unrestricted cash equivalents and short-term investments	0
Total restricted cash equivalents and investments	0
Fair Value Measurements on a Recurring Basis \| U.S. government and agency securities \| Level 2
Assets
Total unrestricted cash equivalents and short-term investments	134,280
Total restricted cash equivalents and investments	844,063
Fair Value Measurements on a Recurring Basis \| U.S. government and agency securities \| Level 3
Assets
Total unrestricted cash equivalents and short-term investments	0
Total restricted cash equivalents and investments	0
Fair Value Measurements on a Recurring Basis \| U.S. government and agency securities
Assets
Total unrestricted cash equivalents and short-term investments		353,274
Total restricted cash equivalents and investments		465,857
Fair Value Measurements on a Recurring Basis \| U.S. government and agency securities \| Level 1
Assets
Total unrestricted cash equivalents and short-term investments		0
Total restricted cash equivalents and investments		0
Fair Value Measurements on a Recurring Basis \| U.S. government and agency securities \| Level 2
Assets
Total unrestricted cash equivalents and short-term investments		353,274
Total restricted cash equivalents and investments		465,857
Fair Value Measurements on a Recurring Basis \| U.S. government and agency securities \| Level 3
Assets
Total unrestricted cash equivalents and short-term investments		0
Total restricted cash equivalents and investments		0
Fair Value, Nonrecurring
Assets
Restricted cash		2,200
Fair Value, Nonrecurring \| Cash and Cash Equivalents and Short-Term Investments
Assets
Cash	439,200	132,500
Fair Value, Nonrecurring \| Cash and Cash Equivalents and Short-Term Investments \| Money market funds
Assets
Short-term investments	$ 360,100	$ 304,700

Cash And Cash Equivalents And Short-Term Investments

No definition available.

Name:	lyft_CashAndCashEquivalentsAndShortTermInvestments
Namespace Prefix:	lyft_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Restricted Cash And Cash Equivalents And Restricted Short-Term Investments

+ References

No definition available.

+ Details

Name:	lyft_RestrictedCashAndCashEquivalentsAndRestrictedShortTermInvestments
Namespace Prefix:	lyft_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Restricted cash equivalents and short-term investments, fair value disclosure.

+ References

No definition available.

+ Details

Name:	lyft_RestrictedCashEquivalentsAndShortTermInvestmentsFairValueDisclosure
Namespace Prefix:	lyft_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Unrestricted cash equivalents and short-term investments, fair value disclosure.

+ References

No definition available.

+ Details

Name:	lyft_UnrestrictedCashEquivalentsAndShortTermInvestmentsFairValueDisclosure
Namespace Prefix:	lyft_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value portion of asset recognized for present right to economic benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

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

- References

No definition available.

+ Details

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

- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 55
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477548/944-605-55-14

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 55
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477548/944-605-55-11

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481372/852-10-55-10

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479168/946-830-55-12

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 45
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477796/946-210-45-21

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 20
-SubTopic 210
-Topic 946
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477796/946-210-45-20

+ Details

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

- Definition

Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-SubTopic 210
-Topic 954
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477220/954-210-45-5

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-8

+ Details

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

- Definition

Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(8))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

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

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CertificatesOfDepositMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CommercialPaperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CorporateBondSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BalanceSheetLocationAxis=lyft_CashCashEquivalentsAndShortTermInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CashAndCashEquivalentsAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: