v3.26.1
Cover Page - shares
 6 Months Ended
Jun. 30, 2026
Jul. 29, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 001-38872  
Entity Registrant Name Pinterest, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 26-3607129  
Entity Address, Address Line One 651 Brannan Street  
Entity Address, City or Town San Francisco  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 94107  
City Area Code 415  
Local Phone Number 762-7100  
Title of 12(b) Security Class A Common Stock, $0.00001 par value  
Trading Symbol PINS  
Security Exchange Name NYSE  
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  
Entity Shell Company false  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --12-31  
Entity Central Index Key 0001506293  
Class A    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   492,198,008
Class B    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   74,115,019