Annual report pursuant to Section 13 and 15(d)

Income Taxes - Narrative (Details)

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Income Taxes - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Jun. 30, 2021
Jun. 30, 2020
Oct. 19, 2021
Jun. 30, 2019
Income Tax Examination [Line Items]          
Valuation allowance $ 20.7 $ 29.1 $ 29.0 $ 30.7 $ 18.7
Increase (decrease) in valuation allowance 1.6 0.1 10.3    
Valuation allowance deferred tax asset, decreases related to expected realization of tax   (10.0)      
Net operating loss, purchase accounting adjustment 3.8        
Unrecognized tax benefits 6.6 5.0 0.8 $ 6.5 $ 13.9
Unrecognized tax benefits that would impact effective tax rate 4.2 3.4      
Unrecognized tax benefits, deferred tax liabilities 3.5 2.9 0.0    
Interest and penalties 0.9 0.6 0.3    
Minimum          
Income Tax Examination [Line Items]          
Unrecognized tax benefits 0.0        
Maximum          
Income Tax Examination [Line Items]          
Unrecognized tax benefits $ 2.8        
2023          
Income Tax Examination [Line Items]          
Tax credit carryforward expiration end year 2023        
2037          
Income Tax Examination [Line Items]          
Tax credit carryforward expiration end year 2037        
Noncurrent income tax payable          
Income Tax Examination [Line Items]          
Unrecognized tax benefits $ 3.1 $ 2.1 $ 0.8    
United States—Federal          
Income Tax Examination [Line Items]          
Operating loss carryforwards 39.7        
Tax credit carryforwards $ 14.0        
United States—Federal | 2035          
Income Tax Examination [Line Items]          
Research and development tax credit carryforward expiration start year 2035        
United States—Federal | 2036          
Income Tax Examination [Line Items]          
Research and development tax credit carryforward expiration start year 2036        
United States—State          
Income Tax Examination [Line Items]          
Operating loss carryforwards $ 58.3        
United States—State | 2022          
Income Tax Examination [Line Items]          
Research and development tax credit carryforward expiration start year 2022        
United States—State | 2041          
Income Tax Examination [Line Items]          
Research and development tax credit carryforward expiration end year 2041        
Foreign Jurisdiction          
Income Tax Examination [Line Items]          
Operating loss carryforwards $ 51.3        
US controlled foreign corporations          
Income Tax Examination [Line Items]          
Amount of unrecognized deferred tax liability related to foreign subsidiaries 28.7        
Undistributed earnings of foreign subsidiaries 220.0        
Non-US controlled foreign corporations          
Income Tax Examination [Line Items]          
Undistributed earnings of foreign subsidiaries $ 67.1