XML 12 R1.htm IDEA: XBRL DOCUMENT v3.20.2
Document and Entity Information - shares
 9 Months Ended
Sep. 30, 2020
Nov. 16, 2020
Entity Listings [Line Items]    
Entity Registrant Name Longview Acquisition Corp.  
Entity Central Index Key 0001804176  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Shell Company true  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2020  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q3  
Entity Address, State or Province NY  
Class A Common Stock [Member]    
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   41,400,000
Class B Common Stock [Member]    
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   10,350,000