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, 2021
Oct. 20, 2021
Oct. 19, 2021
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Assets:              
Other assets $ 24.7     $ 16.2 $ 7.5    
Total Assets 3,118.0     1,547.2 1,243.8    
Liabilities and Stockholders’ Equity:              
Deferred income taxes and other liabilities 197.4     77.5 63.5    
Total liabilities 1,334.0     2,386.7 1,960.3    
Additional paid-in capital 1,845.5     9.5 9.5    
Accumulated deficit (131.6)     (888.0) (729.7)    
Accumulated Other Comprehensive Loss (20.7)     39.2 4.1    
Mirion Technologies, Inc. (Successor) stockholders’ equity 1,693.2     (841.6) (718.7)    
Noncontrolling interests 90.8     2.1 2.2    
Total Stockholders’ Equity 1,784.0 $ (109.4) $ (944.1) (839.5) (716.5) $ (587.7) $ (448.8)
Total liabilities and stockholders’ equity (deficit) 3,118.0     1,547.2 1,243.8    
Parent Company | MIRION TECHNOLOGIES LTD              
Assets:              
Other assets       0.3 0.1    
Investments in Sub 1,851.1     839.8 716.5    
Total Assets 1,851.1     0.3 0.1    
Liabilities and Stockholders’ Equity:              
Warrant liabilities 68.1            
Deferred income taxes and other liabilities (1.0)     0.1 0.1    
Total liabilities 67.1     839.9 716.6    
Additional paid-in capital 1,845.5            
Accumulated deficit (131.6)            
Accumulated Other Comprehensive Loss (20.7)            
Mirion Technologies, Inc. (Successor) stockholders’ equity 1,693.2     (839.6) (716.5)    
Noncontrolling interests 90.8            
Total Stockholders’ Equity 1,784.0            
Total liabilities and stockholders’ equity (deficit) $ 1,851.1     $ 0.3 $ 0.1