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Acquisitions (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended
Feb. 28, 2022
Mar. 31, 2022
Mar. 31, 2021
Business Acquisition [Line Items]      
Aggregate purchase price of acquisitions   $ 2,563 $ 31
Payments of long-term debt   0 $ 750
Vocera      
Business Acquisition [Line Items]      
Aggregate purchase price of acquisitions $ 2,600    
Consideration transferred (in dollars per share) $ 79.25    
Business combination, consideration transferred, including convertible notes $ 3,000    
Share-based payment expense   $ 132  
Vocera | 1.50% Convertible Notes      
Business Acquisition [Line Items]      
Stated interest rate   1.50%  
Payments of long-term debt   $ 101  
Vocera | 0.50% Convertible Notes      
Business Acquisition [Line Items]      
Stated interest rate   0.50%  
Payments of long-term debt   $ 324