v3.22.0.1
Cover - USD ($)
 12 Months Ended
Dec. 31, 2021
Feb. 10, 2022
Jun. 30, 2021
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Current Fiscal Year End Date --12-31    
Document Period End Date Dec. 31, 2021    
Document Transition Report false    
Entity File Number 001-39778    
Entity Registrant Name Airbnb, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 26-3051428    
Entity Address, Address Line One 888 Brannan Street    
Entity Address, City or Town San Francisco    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94103    
City Area Code 415    
Local Phone Number 510-4027    
Title of 12(b) Security Class A common stock, par value $0.0001 per share    
Trading Symbol ABNB    
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    
Entity Shell Company false    
Entity Public Float     $ 50,300,000,000
Documents Incorporated by Reference The information required by Part III of this Report, to the extent not set forth herein, is incorporated herein by reference from the registrant’s definitive proxy statement relating to the Annual Meeting of Shareholders to be held in 2022, which definitive proxy statement shall be filed with the Securities and Exchange Commission within 120 days after the end of the fiscal year to which this Report relates.    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001559720    
Amendment Flag false    
Common Class A      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   371,167,573  
Common Class B      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   262,505,367  
Common Class C      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   0  
Common Class H      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   9,200,000