v3.20.4
Cover Page - USD ($)
$ in Billions
12 Months Ended
Dec. 31, 2020
Feb. 19, 2021
Sep. 30, 2020
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2020    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Document Annual Report true    
Document Transition Report false    
Entity Registrant Name Palantir Technologies Inc.    
Entity Central Index Key 0001321655    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Entity Shell Company false    
Entity Incorporation, State or Country Code DE    
Entity Address, City or Town Denver    
Entity Address, State or Province CO    
Title of 12(b) Security Class A Common Stock, par value $0.001 per share    
Trading Symbol PLTR    
Security Exchange Name NYSE    
Entity Public Float     $ 13.3
Common Class A [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   1,752,006,708  
Common Class B [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   69,255,840  
Common Class F [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   1,005,000