v3.22.0.1
Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2021
Feb. 01, 2022
Jun. 30, 2021
Entity Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2021    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Trading Symbol SNAP    
Entity Registrant Name SNAP INC    
Entity Central Index Key 0001564408    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Public Float     $ 81.7
Document Annual Report true    
Document Transition Report false    
Entity File Number 001-38017    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 45-5452795    
Entity Address, Address Line One 3000 31st Street    
Entity Address, City or Town Santa Monica    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 90405    
City Area Code (310)    
Local Phone Number 399-3339    
Title of 12(b) Security Class A Common Stock, par value $0.00001 per share    
Security Exchange Name NYSE    
Entity Interactive Data Current Yes    
Auditor Name Ernst & Young LLP    
Auditor Firm ID 42    
Auditor Location Los Angeles, CA, United States    
Class A Common Stock      
Entity Information [Line Items]      
Entity Common Stock Shares Outstanding   1,369,920,406  
Class B Common Stock      
Entity Information [Line Items]      
Entity Common Stock Shares Outstanding   22,749,440  
Class C Common Stock      
Entity Information [Line Items]      
Entity Common Stock Shares Outstanding   231,626,943