Quarterly report pursuant to Section 13 or 15(d)

Loss Per Share - Reconciliation of Numerator and Denominator (Details)

v3.24.1.u1
Loss Per Share - Reconciliation of Numerator and Denominator (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Net loss attributable to Mirion Technologies, Inc. shareholders $ (25.8) $ (41.9)
Weighted average common shares outstanding — basic (in shares) 199,729 187,701
Weighted average common shares outstanding — diluted (in shares) 199,729 187,701
Net loss per common share attributable to Mirion Technologies, Inc. — diluted (in dollars per share) $ (0.13) $ (0.22)
Net loss per common share attributable to Mirion Technologies, Inc. — basic (in dollars per share) $ (0.13) $ (0.22)
Share-based awards    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Antidilutive securities excluded from computation of earnings per share, amount 2,577 687