Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.22.1
Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2021
Mar. 30, 2022
Jun. 30, 2021
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2021    
Entity File Number 001-40006    
Entity Registrant Name HH&L Acquisition Co    
Entity Incorporation, State or Country Code E9    
Entity Tax Identification Number 00-0000000    
Entity Address, Address Line One Suite 2001-2002, 20/F, York    
Entity Address, Address Line Two House, The Landmark15 Queen’s Road Central    
Entity Address, City or Town Central    
Entity Address, Country HK    
Entity Address, Postal Zip Code N/A    
City Area Code 852    
Local Phone Number 3752-2870    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Voluntary Filers No    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Public Float     $ 401,580,000
Entity Well-known Seasoned Issuer No    
Entity Ex Transition Period false    
Entity Shell Company true    
Entity Central Index Key 0001824185    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Amendment Flag false    
Auditor Name WithumSmith+Brown    
Auditor Firm ID 100    
Auditor Location New York, New York    
Units, each consisting of one share of Class A Common Stock and one-half of one Warrant      
Document Information [Line Items]      
Title of 12(b) Security Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-half of one redeemable warrant    
Trading Symbol HHLA.U    
Security Exchange Name NYSE    
Class A Common Stock      
Document Information [Line Items]      
Title of 12(b) Security Class A Ordinary Shares included as part of the units    
Trading Symbol HHLA    
Security Exchange Name NYSE    
Entity Common Stock, Shares Outstanding   41,400,000  
Redeemable Warrants Exercisable For Class Common Stock      
Document Information [Line Items]      
Title of 12(b) Security Redeemable warrants included as part of the units    
Trading Symbol HHLA WS    
Security Exchange Name NYSE    
Class B Common Stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   10,350,000