v3.26.1
Earnings Per Share - Schedule of Reconciliation of Numerator and Denominator (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Earnings Per Share [Abstract]        
Net earnings attributable to Mirion Technologies, Inc. shareholders $ 7.7 $ 8.3 $ 4.3 $ 8.6
Weighted average common shares outstanding — basic (in shares) 244,565 225,026 244,614 225,339
Effect of potentially dilutive securities — stock-based awards (in shares) 181 722 420 945
Effect of potentially dilutive securities - convertible debt (in shares) 30,321 17,310 30,321 17,310
Weighted average common shares outstanding — diluted (in shares) 275,067 243,058 275,355 243,594
Net earnings per common share attributable to Mirion Technologies, Inc. — basic (in dollars per share) $ 0.03 $ 0.04 $ 0.02 $ 0.04
Net earnings per common share attributable to Mirion Technologies, Inc. — diluted (in dollars per share) $ 0.03 $ 0.03 $ 0.02 $ 0.04