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Discontinued Operations (Details)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2021
USD ($)
segment
Dec. 31, 2020
USD ($)
segment
Jan. 19, 2021
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Number of reportable segments | segment 2    
Current assets held for sale $ 1,032.4 $ 0.0  
Current liabilities held for sale $ 223.6 $ 0.0  
MTS Test & Simulation      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Maximum expected duration of time (in years) to close on the sale of business from the date of the acquisition 1 year    
Disposal group, consideration     $ 750.0
MTS Systems Corporation      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Number of reportable segments | segment   2