XML 12 R1.htm IDEA: XBRL DOCUMENT v3.22.1
Document and Entity Information - USD ($)
 10 Months Ended
Dec. 31, 2021
Mar. 01, 2022
Jun. 30, 2021
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
Document Transition Report false    
Entity Registrant Name Fifth Wall Acquisition Corp. III    
Entity Incorporation, State or Country Code E9    
Entity File Number 001-40415    
Entity Tax Identification Number 98-1583957    
Entity Address, Address Line One 6060 Center Drive    
Entity Address, Address Line Two 10th Floor,    
Entity Address, City or Town Los Angeles    
Entity Address State Or Province CA    
Entity Address, Postal Zip Code 90045    
City Area Code 310    
Local Phone Number 853-8878    
Title of 12(b) Security Class A ordinary shares, par value $0.0001    
Trading Symbol true    
Security Exchange Name NASDAQ    
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 true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
ICFR Auditor Attestation Flag false    
Entity Shell Company true    
Entity Public Float     $ 273,625,000
Entity Central Index Key 0001847874    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Amendment Flag false    
Auditor Name WithumSmith+Brown, PC    
Auditor Firm ID 100    
Auditor Location New York, New York    
Class A ordinary shares      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   28,407,000  
Class B ordinary shares      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   6,875,000