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Discontinued Operations - Narratives (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 01, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 20, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations          
Proceeds from sale of businesses   $ 317.5 $ 0.0 $ 133.5  
Assets disposed of by sales | Cryobiological products business          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations          
Proceeds from sale of businesses $ 317.5        
Net assets 320.0        
Estimated closing date adjustments $ 2.5        
Gain on sale of business, net of taxes   224.2      
Tax on gain on sale of business   25.2      
Interest expense, net   $ 7.4 $ 10.6    
Assets disposed of by sales | BioMedical          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations          
Gain on sale of business, net of taxes       34.3  
Tax on gain on sale of business       2.6  
Interest expense, net       $ 3.2  
Asset sale price         $ 133.5