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Goodwill and Intangible Assets - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]        
Amortization expense for intangible assets   $ 211 $ 149 $ 126
All other        
Finite-Lived Intangible Assets [Line Items]        
Weighted average useful life   7 years 5 years  
Customer lists and user base        
Finite-Lived Intangible Assets [Line Items]        
Intangible asset impairment charges       $ 30
GoPay Assets Acquisition        
Finite-Lived Intangible Assets [Line Items]        
Percentage of shares acquired 70.00% 70.00%    
Finite-lived intangible assets acquired $ 190      
Weighted average useful life 7 years