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Acquisitions - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Feb. 10, 2020
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Business Acquisition [Line Items]        
Business acquisition   $ 35 $ 6  
Goodwill   $ 2,612   $ 2,642
Herman ProAV        
Business Acquisition [Line Items]        
Business acquisition $ 36      
Goodwill 4      
Business acquisition, intangible assets acquired $ 18