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Acquisitions and Dispositions of Businesses - Schedule of Net Assets Acquired (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Assets acquired    
Goodwill $ 8,496 $ 8,434
2022 And 2021 Acquisitions    
Business Acquisition [Line Items]    
Cash 134  
Deferred and contingent consideration 3  
Aggregate consideration transferred 137  
Assets acquired    
Goodwill 74  
Intangible assets 65  
Other assets 6  
Total assets acquired 145  
Liabilities assumed:    
Total liabilities assumed 8  
Net assets acquired $ 137