Quarterly report pursuant to Section 13 or 15(d)

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

v3.22.2
Loss Per Share - Reconciliation of Numerator and Denominator (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Net loss attributable to Mirion Technologies, Inc. (Successor) / Mirion Technologies (TopCo), Ltd. (Predecessor) shareholders $ (58.6) $ (53.9) $ (76.3) $ (94.6)
Weighted average common shares outstanding — basic (in shares) 180,992,000 6,621,000 180,884,000 6,596,000
Weighted average common shares outstanding — diluted (in shares) 180,992,000 6,621,000 180,884,000 6,596,000
Net loss per common share attributable to Mirion Technologies, Inc. (Successor) / Mirion Technologies (TopCo), Ltd. (Predecessor) stockholders — basic (in dollars per share) $ (0.32) $ (8.14) $ (0.42) $ (14.34)
Net loss per common share attributable to Mirion Technologies, Inc. (Successor) / Mirion Technologies (TopCo), Ltd. (Predecessor) stockholders — diluted (in dollars per share) $ (0.32) $ (8.14) $ (0.42) $ (14.34)
Share-based awards        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Anti-dilutive employee share-based awards, excluded 933,000 217,000 938,000 242,000