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Acquisitions - Net Assets Acquired (Details) - USD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Jun. 03, 2021
Business Combination Segment Allocation [Line Items]      
Goodwill $ 314.8 $ 315.0  
CompuGain LLC      
Business Combination Segment Allocation [Line Items]      
Receivables     $ 7.8
Prepaid expenses and other current assets     0.7
Properties and other long-term assets     0.2
Operating lease right-of-use assets     0.2
Accounts payable and accruals     (5.6)
Long-term operating lease liabilities     (0.1)
Intangible assets     18.3
Goodwill     65.5
Total     $ 87.0