Annual report pursuant to Section 13 and 15(d)


Cover - USD ($)
12 Months Ended
Dec. 31, 2020
Mar. 25, 2021
Jun. 30, 2020
Document Information [Line Items]      
Document Type 10-K/A    
Amendment Flag true    
Amendment Description Amendment No. 1    
Document Period End Date Dec. 31, 2020    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Entity Registrant Name Finance of America Companies Inc.    
Entity Central Index Key 0001828937    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Non-accelerated Filer    
Entity Common Stock, Shares Outstanding   35,937,500  
Entity Public Float     $ 267,750,000
Entity Interactive Data Current Yes    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
Entity Shell Company false    
Entity File Number 001-40308    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 85-3474065    
Document Annual Report true    
Document Transition Report false    
Entity Address, Address Line One 909 Lake Carolyn Parkway    
Entity Address, Address Line Two Suite 1550    
Entity Address, City or Town Irving    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 75039    
City Area Code 972    
Local Phone Number 865-8114    
Class A common stock      
Document Information [Line Items]      
Title of 12(b) Security Class A Common Stock, par value $0.0001 per share    
Trading Symbol FOA    
Security Exchange Name NYSE    
Warrant to purchase      
Document Information [Line Items]      
Title of 12(b) Security Warrants to purchase shares of Class A Common Stock    
Trading Symbol FOA.WS    
Security Exchange Name NYSE