Leases - Additional Information (Details) $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($) location	Mar. 31, 2021 USD ($)
Lessee, Lease, Description
Sublease income \| $	$ 3,714	$ 0
Real Estate Leases
Lessee, Lease, Description
Number of locations \| location	79
Real Estate Leases \| Minimum
Lessee, Lease, Description
Lessee, operating lease, term of contract (in years)	1 month
Lessee, operating lease, option to extend term (in years)	2 months
Real Estate Leases \| Maximum
Lessee, Lease, Description
Lessee, operating lease, term of contract (in years)	8 years
Lessee, operating lease, option to extend term (in years)	10 years
Vehicles \| Minimum
Lessee, Lease, Description
Finance lease term of contract (in years)	1 month
Vehicles \| Maximum
Lessee, Lease, Description
Finance lease term of contract (in years)	3 years

Lessee, Finance Lease, Remaining Term

No definition available.

Name:	lyft_LesseeFinanceLeaseRemainingTerm
Namespace Prefix:	lyft_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Lessee operating lease options to extend term.

+ References

No definition available.

+ Details

Name:	lyft_LesseeOperatingLeaseOptionsToExtendTerm
Namespace Prefix:	lyft_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of locations.

+ References

No definition available.

+ Details

Name:	lyft_NumberOfLocations
Namespace Prefix:	lyft_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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

- Definition

Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980

+ Details

Name:	us-gaap_LesseeOperatingLeaseRemainingLeaseTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of sublease income excluding finance and operating lease expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 55
-Paragraph 53
-URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971

+ Details

Name:	us-gaap_SubleaseIncome
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=lyft_RealEstateLeaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_VehiclesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: