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Business Combination - Summary of Preliminary Acquisition Date Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($)
$ in Millions
Oct. 25, 2019
May 23, 2019
Apr. 26, 2019
Business Acquisition [Line Items]      
Goodwill $ 1,770   $ 1,735
Cognigo Research Limited      
Business Acquisition [Line Items]      
Cash   $ 2  
Developed technology intangible asset   26  
Goodwill   35  
Total assets acquired   63  
Liabilities assumed   (5)  
Total purchase price   $ 58