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Business Acquisitions and Divestitures - Summary of Allocation of Acquisition Date Fair Value (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Business Acquisition [Line Items]      
Goodwill $ 939,259 $ 761,153 $ 632,370
2020 Acquisitions      
Business Acquisition [Line Items]      
Goodwill 162,747    
Net deferred tax liability (5,741)    
Other assets acquired and liabilities assumed, net 1,392    
Total 204,510    
2020 Acquisitions | Acquired Developed Technology      
Business Acquisition [Line Items]      
Finite lived intangible assets $ 46,112    
AI Factory, Inc.      
Business Acquisition [Line Items]      
Goodwill   110,734  
Other assets acquired and liabilities assumed, net   1,353  
Total   128,087  
AI Factory, Inc. | Acquired Developed Technology      
Business Acquisition [Line Items]      
Finite lived intangible assets   $ 16,000