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Business Combinations (Details) - USD ($)
$ in Millions
9 Months Ended
Aug. 20, 2021
Jun. 15, 2021
Jan. 08, 2021
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Business Acquisition [Line Items]            
Goodwill       $ 770   $ 241
Element AI Inc.            
Business Acquisition [Line Items]            
Cash payment to acquire businesses     $ 228      
Net tangible assets     16      
Goodwill     81      
Unrecognized tax benefits     43      
LightStep Inc.            
Business Acquisition [Line Items]            
Cash payment to acquire businesses   $ 512        
Net tangible assets   8        
Goodwill   413        
Indefinite-lived intangible assets   11        
Net deferred tax liabilities   6        
Swarm64 As            
Business Acquisition [Line Items]            
Cash payment to acquire businesses $ 32          
Goodwill 20          
Series of Individually Immaterial Business Acquisitions            
Business Acquisition [Line Items]            
Cash payment to acquire businesses       $ 27    
Developed technology            
Business Acquisition [Line Items]            
Weighted average useful life       5 years 5 years  
Developed technology | Element AI Inc.            
Business Acquisition [Line Items]            
Intangible assets     $ 85      
Weighted average useful life     5 years      
Developed technology | LightStep Inc.            
Business Acquisition [Line Items]            
Intangible assets   $ 85        
Weighted average useful life   5 years        
Developed technology | Swarm64 As            
Business Acquisition [Line Items]            
Intangible assets $ 14          
Weighted average useful life 5 years