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Subsequent Events (Details) - USD ($)
Jan. 21, 2020
Sep. 30, 2020
Dec. 31, 2019
SUBSEQUENT EVENTS      
Debt Instrument, Face Amount   $ 503,000,000 $ 400,000,000
Social Capital Hedosophia Holdings Corp. II | Subsequent Events | Sponsor      
SUBSEQUENT EVENTS      
Units issued (in shares) 8,625,000    
Debt Instrument, Face Amount $ 25,000    
Number of Class A ordinary shares issued upon conversion of founder shares 1    
Number of shares held by sponsor 10,350,000    
Social Capital Hedosophia Holdings Corp. II | Subsequent Events | Sponsor | Notes Payable, Other Payables [Member]      
SUBSEQUENT EVENTS      
Maximum borrowing capacity $ 300,000    
Outstanding balance $ 300,000