Quarterly report pursuant to Section 13 or 15(d)

Cover Page

Cover Page - shares
3 Months Ended
Mar. 31, 2022
May 02, 2022
Entity Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2022  
Document Transition Report false  
Entity File Number 001-39352  
Entity Registrant Name Mirion Technologies, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 83-0974996  
Entity Address, Address Line One 1218 Menlo Drive  
Entity Address, City or Town Atlanta  
Entity Address, State or Province GA  
Entity Address, Postal Zip Code 30318  
City Area Code 770  
Local Phone Number 432-2744  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Document Fiscal Period Focus FY  
Amendment Flag false  
Document Fiscal Year Focus 2022  
Current Fiscal Year End Date --12-31  
Entity Central Index Key 0001809987  
Common Class A    
Entity Information [Line Items]    
Title of 12(b) Security Class A Common Stock, $0.0001 par value per share  
Trading Symbol MIR  
Security Exchange Name NYSE  
Entity Common Stock, Shares Outstanding   199,583,232
Entity Information [Line Items]    
Title of 12(b) Security Redeemable warrants, each exercisable for one share of Class A common stock at an exercise price of $11.50  
Trading Symbol MIR WS  
Security Exchange Name NYSE  
Common Class B    
Entity Information [Line Items]    
Entity Common Stock, Shares Outstanding   8,510,540