Cover - USD ($)
$ in Billions

12 Months Ended

Dec. 31, 2023

Feb. 16, 2024

Jun. 30, 2023

Cover [Abstract]

Document Type

10-K

Document Annual Report

true

Document Period End Date

Dec. 31, 2023

Current Fiscal Year End Date

--12-31

Document Transition Report

false

Entity File Number

001-38683

Entity Registrant Name

GUARDANT HEALTH, INC.

Entity Incorporation, State or Country Code

DE

Entity Tax Identification Number

45-4139254

Entity Address, Address Line One

3100 Hanover Street

Entity Address, City or Town

Palo Alto

Entity Address, State or Province

CA

Entity Address, Postal Zip Code

94304

City Area Code

855

Local Phone Number

698-8887

Title of 12(b) Security

Common Stock, par value $0.00001

Trading Symbol

GH

Security Exchange Name

NASDAQ

Entity Well-known Seasoned Issuer

Yes

Entity Voluntary Filers

No

Entity Current Reporting Status

Yes

Entity Interactive Data Current

Yes

Entity Filer Category

Large Accelerated Filer

Entity Small Business

false

Entity Emerging Growth Company

false

ICFR Auditor Attestation Flag

true

Document Financial Statement Error Correction

false

Entity Shell Company

false

Entity Public Float

$ 4.1

Entity Common Stock, Shares Outstanding

121,712,724

Documents Incorporated by Reference

Portions of the registrant’s definitive proxy statement relating to its annual meeting of stockholders to be held in 2024, or the 2024 Annual Meeting, to be filed with the Securities and Exchange Commission, or the SEC, within 120 days after the end of the fiscal year to which this Annual Report on Form 10-K relates, are incorporated herein by reference where indicated. Except with respect to information specifically incorporated by reference in this Annual Report on Form 10-K, such proxy statement is not deemed to be filed as part hereof.

Amendment Flag

false

Document Fiscal Year Focus

2023

Document Fiscal Period Focus

FY

Entity Central Index Key

0001576280