Annual report pursuant to Section 13 and 15(d)

Schedule I - Condensed Financial Information of the Registrant - CONDENSED BALANCE SHEET (Details)

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Schedule I - Condensed Financial Information of the Registrant - CONDENSED BALANCE SHEET (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Oct. 20, 2021
Oct. 19, 2021
Jun. 30, 2021
Jun. 30, 2020
ASSETS              
Other assets $ 25.1 $ 24.3          
Total assets 2,718.5 2,738.7          
LIABILITIES AND STOCKHOLDERS’ EQUITY (DEFICIT)              
Warrant liabilities 55.3 30.5          
Total liabilities 1,168.5 1,271.5          
Treasury stock, at cost; 149,076 shares at December 31, 2023 and 0 shares at December 31, 2022 (1.3) 0.0          
Additional paid-in capital 2,056.5 1,882.4          
Accumulated deficit (505.4) (408.5)          
Accumulated other comprehensive loss (65.3) (75.7)          
Mirion Technologies, Inc. (Successor) stockholders’ equity 1,484.5 1,398.2          
Noncontrolling interests 65.5 69.0          
Total stockholders’ equity 1,550.0 1,467.2 $ 1,784.0 $ (109.4) $ (944.1) $ (839.5) $ (716.5)
Total liabilities and stockholders’ equity 2,718.5 2,738.7          
Parent Company              
ASSETS              
Other assets           0.3  
Investments in Sub 1,604.4 1,496.8       839.8  
Total assets 1,604.4 1,496.8       0.3  
LIABILITIES AND STOCKHOLDERS’ EQUITY (DEFICIT)              
Warrant liabilities 55.3 30.5          
Deferred income taxes and other liabilities (0.9) (0.9)       0.1  
Total liabilities 54.4 29.6       839.9  
Treasury stock, at cost; 149,076 shares at December 31, 2023 and 0 shares at December 31, 2022 (1.3) 0.0          
Additional paid-in capital 2,056.5 1,882.4          
Accumulated deficit (505.4) (408.5)          
Accumulated other comprehensive loss (65.3) (75.7)          
Mirion Technologies, Inc. (Successor) stockholders’ equity 1,484.5 1,398.2       (839.6)  
Noncontrolling interests 65.5 69.0          
Total stockholders’ equity 1,550.0 1,467.2          
Total liabilities and stockholders’ equity $ 1,604.4 $ 1,496.8       $ 0.3