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Acquisitions (Details)
$ in Millions, € in Billions
Dec. 20, 2021
USD ($)
Jun. 24, 2021
EUR (€)
Dec. 31, 2021
USD ($)
Sep. 30, 2021
USD ($)
Business Acquisition [Line Items]        
Goodwill     $ 16,555 $ 15,958
The Currency Cloud Group Limited        
Business Acquisition [Line Items]        
Total consideration $ 893      
Amount allocated to technology, intangible assets and deferred tax liabilities 210      
Goodwill $ 683      
Tink        
Business Acquisition [Line Items]        
Pending acquisition | €   € 1.8