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Acquisitions, Goodwill and Intangible Assets - Summary of Total Purchase Price (Details) - GRAIL Inc
$ in Millions
Aug. 18, 2021
USD ($)
Goodwill [Line Items]  
Cash $ 2,862
Fair value of common stock issued 4,975
Fair value of contingent consideration 757
Fair value of previously held investment 1,149
Settlement of preexisting relationships 2
Total purchase price $ 9,745