v3.20.2
Equity Method Investments Additional information (Detail) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2020
Nov. 30, 2019
Sep. 30, 2020
Sep. 30, 2020
Schedule of Equity Method Investments [Line Items]        
Payments made to acquire equity method investments       $ 2,500
Share of profits or losses recorded       (1,439)
Service Credit Utilized     $ 900 1,900
Palantir Technologies Japan, K.K. [Member]        
Schedule of Equity Method Investments [Line Items]        
Number of shares purchased   100,000    
Payments made to acquire equity method investments   $ 25,000    
Equity method investment ownership percentage   50.00%    
Initial investment recorded $ 25,900 $ 900 25,900 25,900
Share of profits or losses recorded     $ (500) (1,400)
Palantir Technologies Japan, K.K. [Member] | License and Service [Member]        
Schedule of Equity Method Investments [Line Items]        
License and services agreement Term   10 years    
Palantir Technologies Japan, K.K. [Member] | Service Credit [Member]        
Schedule of Equity Method Investments [Line Items]        
Service Credit recognition expiry period   5 years    
Palantir Technologies Japan, K.K. [Member] | Usage Of Trademark [Member] | License and Service [Member]        
Schedule of Equity Method Investments [Line Items]        
Amount paid in exchange for usage of trademark       25,000
Prepayment Amount received $ 50,000      
Service Credit Utilized       $ 50,000
SOMPO [Member]        
Schedule of Equity Method Investments [Line Items]        
Equity method investment ownership percentage   50.00%    
Percentage Of Share Of Profits Or Losses Generated [Member]        
Schedule of Equity Method Investments [Line Items]        
Equity Method Investment, Additional Information       The Company’s 50% share of profits or losses generated from Palantir Japan are reported on a quarter lag.